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Tag Archives: Alden Theatre McLean Community Center
Crossing a high footbridge at Living Classrooms in Glen Echo Park
Who would ever guess that near-60-degree nice days in DC would be a regular occurrence in the middle of winter? This is exactly why this weekend round-up is steeped with recommendations that take place indoors, despite at least one of those glorious days on the way. If you want to get out and seize it — because who knows when Snowmageddon II could hit? — scroll right down to the end of the list for a link to a wealth of outdoor ideas. Otherwise, read on to explore all of your options for family fun, from the Auto Show and the Monster Jam, to Chinese Lunar New Year and birthday celebrations, to a puppet festival and puppet shows, and even more possibilities in between. Happy Weekend!
Auto Focus – The 2012 Washington Auto Show begins today and runs through next weekend. If there's any "grown-up" event that is equally fun for all ages, this is it. And I know from firsthand experience; our family went to the show last year and practically had to drag the kids out when it was finally time to go. It's like a Truck Touch, but with autombiles — more than 700 of them! — on display for guests to check out. And especially for kids will be Playland, an area filled with games, toys, videos, and cuddly mascots, including some from the PBS show SuperWhy! This all takes place at the Washington Convention Center. Tickets are $12/adults, $5/ages 6-12, free for 5 and under. Hours are 12-10pm Friday, 10am-10pm Saturday, and 10am-7pm Sunday. See this post for even more details.
Year of the Dragon – Usher in the lunar year 4017 on Sunday at the Chinese New Year Parade. Festivities kick off at 6th & I Streets NW at 2pm and will wind through the streets of Chinatown celebrating Chinese culture in a brilliant procession that includes traditional dance, music, and, of course, the iconic dragons. The parade is expected to last about two and a half hours, and spectating is free. View the route here to stake out your curbside spot.
Build-a-Saurus at Lowe's – It's another Build and Learn Clinic at the home improvement store on Saturday. Lowe's hosts free bimonthly workshops for kids, and during this session guests can build a wooden dino, then choose the stickers to make it a cartoon or a realistic dinosaur. The store will provide all the materials, along with goggles, an apron, and other goodies to take home. We haven't yet been, but a friend went to the last one and gave it a great review. Go here to find your local Lowe's and register for the workshop.
Monster Jam – If you hear a rumble echoing around the city this weekend, chances are it's coming from the Verizon Center where 12-foot-tall, 10-thousand-pound monster trucks will be wowing crowds with big stunts, power races, and wheelie contests (can you imagine one of those things popping a wheelie?!). There are shows Friday evening through Sunday afternoon. Tickets are $60/VIP seats, $25/Gold Circle seats, and Mid-Level are $20/adults, $10/kids 2-12, kids under 2 are free. There is also a pit party on Saturday from 11am – 12:30pm, where guests can meet drivers, check out cars up close, and more. According to the website, pit passes are generally available for free at Advance Auto Parts retailers while supplies last. They are also available for purchase at the Verizon Center the day of the show when accompanied by the appropriate event ticket.
Show Time – Sit back, relax, and enjoy the shows at local theaters. The Snowy Day is at Adventure Theatre, Peter and the Wolf and Tiny Tots are at The Puppet Co., and Mouse on the Move is at Imagination Stage. You can find details on all of these productions in this post about winter entertainment.
Living Classrooms – Whether you're at Glen Echo Park to catch a show or just looking for a little nature fun for the kids, Living Classrooms, located just off the path that leads from the park to the parking lot is worth checking out. We've passed by numerous times, but never actually visited until last weekend, after we found out the show we were supposed to see was canceled. What a neat discovery — the small building contained a giant ant hill that kids cold crawl through, a high foot bridge to cross and a tree to slide down, various critters and creatures observe, and more. One of the highlights was a an animal encounter with a rosy boa and a chance to pet the snake. There's also an art room that's open to the outdoors — a great place to draw inspiration from nature when weather permits. It's all open to visitors on Saturday and Sunday from 10am – 3pm both days. Admission is $5/person, free for children under 2.
Happy Birthday, Renwick! – Celebrate the fortieth anniversary of the opening of the Renwick Gallery. Enjoy live music, hands-on activities, a docent led touch table, craft activities, mini scavenger hunts through the galleries, and, of course, cake! This all takes place on Saturday from 11am – 2pm. Admission is free.
Happy 25th, IKEA Woodbridge – Everyone's favorite DIY furniture and everything else store is celebrating 25 years at the Northern Virginia location with goodies for customers — four days of savings, giveaways, design workshops, and family fun! Be the first 100 in line on Saturday and Sunday and win an IKEA gift card worth anywhere from $5-$250. Also among the festivities: live entertainment, including a string quartet, pianist, and opera singer from the Opera Performance Group from the college of William and Mary; fun events for the kids, including face painting each day from 12-2pm; and on Sunday, Radio Disney will be there from 1-3pm with non-stop music, games and giveaways.
See Us Fly: The Wright Brothers – On Saturday at 11:30am and 1pm, the National Air & Space Museum presents a puppet performance about Orville and Wilbur Wright and their journey into the history books. This is the story of two very determined brothers who beat the odds to create the world's first self-propelled flying machine. Rainbow Puppet Productions will perform two 40-minute performances. Recommended for ages 4-8. Admission is free.
The Artist in You – The National Children Museum's Launch Zone welcomes kids to discover their inner-artists — the only supply needed is their creativity! They can learn about artists such as Jackson Pollock, Pablo Picasso, and Alexander Calder and have the chance to create their own artistic masterpieces using marbles, construction paper, and more interesting textiles. Drop in on Saturday from 11am – 4pm. Admission is free.
Puppet Festival – The McClean Community Center's Alden Theatre is hosting a day dedicated to puppetry on Saturday. Guests can enjoy two puppet shows starting at 1:30pm, then make their own puppets at puppet creation stations. Admission is $10, children 2 and under are free. Purchase tickets through the Alden Theatre website.
Stories in Art – Henri Matisse is the featured artist once again at the National Gallry of Art's drop in program this Sunday. Kids ages 4-7 can learn about him through storytelling, discussion, and an art project. Sessions are at 11:30am, 12:30pm, 1:30pm, and 2:30pm. Sign-in will take place in the East Building Atrium, beginning at 11am, and will continue until all spaces are filled. Admission is free. Read a KFDC review of the Stories in Art program here.
Outward Bound – Near sixty-degree days in the middle of winter seem to be the new normal in Washington. And you will not hear a single complaint about it from me. Get out and enjoy the unseasonably awesome weather while you can; Snowmageddon 2012 could be right around the corner. For ideas on where to seize the sunny days, see this post about the best places in the DC area to enjoy a beautiful day outdoors with the kids.
Filed under All ages, Annual, Art, Class, DC, Educational, Festival, Free, Live Entertainment, Maryland, Museums, Outdoor, Seasonal, Theatre, Virginia, Weekend, Winter
Tagged as Advance Auto Parts Monster Jam, Adventure Theatre, Alden Theatre McLean Community Center, Build & Grow Clinics, Chinatown New Year Parade, Chinese New Year Parade, DC Chinese Lunar New Year, Glen Echo Park, Ikea Woodbridge, Imagination Stage, Living Classrooms, Lowe's, Mouse on the Move, National Air & Space Museum, National Children's Museum Launch Zone, National Gallery of Art, Peter and the Wolf, Puppet Festival, Renwick Gallery, Stories in Art, The Puppet Co., The Snowy Day, Things to do with Kids in Washington DC, Tiny Tots, Verizon Center, Washington Auto Show, Washington DC Family Activities, Washington DC Kids Activities, Washington DC Outdors, Washington DC with Kids, Weekend January 28-29, What to do with Kids in Washington DC, Wright Brothers Puppet Show
Spring into Summer with a New Selection of Family Entertainment
There's a whole new crop of live entertainment for kids coming to area performing arts venues this spring and summer. Catch some of these performances as soon as this week or save your seats for shows opening at later dates. Here are details on all of them, with most descriptions straight from the websites.
Joanie Leeds & The Nightlights
Where: Kennedy Center Millennium Stage
When: May 7 at 6pm
Tickets: FREE!
Join the artist of the 2010 Parents' Choice® Gold Award-winning album, I'm a Rock Star, as she celebrate the releae of her new album, What a Zoo!, with a performance on the Kennedy Center's Milliennum Stage. Joanie Leeds and her band, The Nightlights, will make their Washington, DC, debut with a FREE rocking family show. If you haven't heard Joanie's music, go take a listen on her website—it's easy to see why her poppy sound and fun lyrics strike a chord with kids. The concert is part of The Kennedy Center's daily Free Performance series.
Various Performances for Children
Where: Discovery Theater
Tickets: $3 – $6
From plays based on ancient fables to unique dance performances to magic shows to animal encounters, Discovery Theater entertains audiences with a variety of productions for all ages. Most performances take place at the Smithsonian's Ripley Center. See the complete schedule of shows on the theater's website.
NSO Teddy Bear Concert: Bears, Bears Everywhere
Where: Kennedy Center
When: May 7-8
It's a big bear world out there, and every sort of bear has its own look and growl. This Teddy Bear Concert takes a peek at these adorable creatures and the sounds of their homelands–music that is as unique as they are. NSO musicians on violin, bassoon, and, percussion assemble a wild combination of instruments in order to create music from around the world. Children will also be introduced to an out-of-this-world instrument, the Theremin, which is used to create the crazy sounds in a lot of classic films. Recommended for ages 3-5. Ge there early for "musical playtime"—starting a half-hour before each Teddy Bear Concert, there are music and movement activities designed especially for small children.
George and Martha – Tons of Fun
When: Through May 29
Tickets: $11 – $22
The two endearing hippos from the James Marshall picture books stomp onto stage in this warm and funny musical adaptation. George and Martha are best friends. They play music together and share meals, presents, picnics, and exciting adventures like flying a balloon. Sometimes they have differences as all friends do. But it cannot last. Like all good friends George and Martha just can't stay angry for long! This simple story says much about our relationships at any age. Geared for our youngest theatre-goers but enjoyable for all, this new musical by Joan Cushing sparkles with clever lyrics and laughter. Enjoyed by ages 3 and up.
Liberty Smith
Where: Ford's Theatre
Ford's Theatre presents the world premiere of Liberty Smith, a madcap musical romp through Revolutionary America. A childhood friend of George Washington, apprentice to Benjamin Franklin and linked to Paul Revere's remarkable ride, the elusive Liberty Smith weaves his way through familiar tales of a young nation. Rife with melody and blazing with adventure, Liberty Smith recalls the lush heyday of the American musical. Experience the birth of America through the eyes of our forgotten founding father: Liberty Smith.
The Day John Henry Came to School
Johnny is way into video games and not especially motivated at school. Imagine his surprise one night when there's a loud knock at the door and his ancestor John Henry bursts into his bedroom, wielding a 12 lb hammer and insisting that he will visit Johnny's class the next day for "Show & Tell." At first unimpressed by John Henry's tragic tale about his race with the steam engine, the kids in Johnny's class come to appreciate the importance of his ultimate sacrifice. Recommended for ages 7 and up.
A Year with Frog and Toad
When: May 10 – June 5
Arnold Lobel's well-loved characters hop from the page to the stage in Robert and Willie Reale's musical. It follows two great friends, the cheerful and popular Frog and the rather grumpy Toad through four fun-filled seasons. Waking from hibernation in the spring, they proceed to plant gardens, swim, rake leaves and go sledding, learning life lessons along the way, including a most important one about friendship and rejoicing in the attributes that make each of us different and special. Recommended for ages 4 and up.
Where: Lisner Auditorium
When: May 12
Tickets: $32 or $112 for the Mini-movers package (Groupon has a deal thru 5/1 – see below)
Disney's Emmy Award-winning Imagination Movers come to Lisner as part of their "In a Big Warehouse" concert tour. The wildly popular New Orleans-based rock band for kids of all ages will play their most popular songs and bring the magic of the Imagination Movers television series' Idea Warehouse to life. Concertgoers can expect special appearances from Nina, Warehouse Mouse and other characters from the TV series. Get 50% off tickets through Groupon, but buy them soon, as the deal only lasts through May 1.
Peter and the Wolf
Where: Alden Theatre
Tickets: $12, $8/McLean residents
This is an adaptation of the traditional Russian folktale set to music by Sergei Prokofiev. While providing a charming introduction to the world of music and musical instruments, this enchanting tale is all about the adventure of growing up. Danger becomes reality and creative innovation becomes essential as young Peter meets the challenge of survival in the outside world. Recommended for ages 5 and up.
NSO Family Concert: Beethoven Lives Upstairs
What to do about the loud neighbor upstairs? When Ludwig van Beethoven moves into his family's Vienna boarding house, young Christoph begins writing letters to his uncle about the "madman" living above him. Through a touching correspondence dramatically underscored with more than twenty-five excerpts from the composer's most beautiful works, Christoph comes to understand the genius of Beethoven, the beauty of his music, and the torment of his deafness. Part history, part drama, all fun, this is an excellent introduction to the master's music, including the Moonlight Sonata, Für Elise, and the great Fifth and Ninth Symphonies. Recommended for age 5 and up. Get to the show an hour early for the Musical Instrument "Petting Zoo," where young concertgoers can get up close and hands-on with the instruments they'll see played on the stage—from violins, trumpets, and oboes to trombones and percussion—in the Kennedy Center Atrium.
Drumming with Dishes
Where: Art on the Horizon at Landmark Mall
Tickets: $8 or $25 for a Family 4-Pack
Join an adventurous toddler as she introduces her imaginary friend to a very special kitchen, where instead of food, they'll cook up beautiful music. This gentle, whimsical adventure celebrates turning the ordinary into the extraordinary, as you never know just what will become a musical instrument next. Pasta box shakers and dishes drumming away with spoons are just some of the friendly surprises that encourage a child's sense of play. And as our heroine empowers her timid friend to create music, we discover just what wonders can be accomplished when we all work together. This world-premiere production is a 30-minute interactive, non-verbal show, which features two adult actors and a musician. Geared towards children ages 2-5.
NSO Kinderkonzert: Got Rhythm?
Rhythm is everywhere: it flavors our lives and lives within music. Join Glenn Donnellan, Richard Barber, Edward Cabarga, Adel Sanchez, and Joe Connell for vivid selections by Beethoven, Mendelssohn, Rossini, and more. Recommended for ages 4 and up. Free musical instrument "Petting Zoo" one hour prior to each performance. Get to the show an hour early for the Musical Instrument "Petting Zoo," where young concertgoers can get up close and hands-on with the instruments they'll see played on the stage in the Kennedy Center Atrium.
Jack & the Bean-Stalk
Where: 1st Stage Theater
When: May 15-June 19
Enjoy a hilarious, laugh-out-loud, brand-new adaptation of the classic fairy tale, "Jack and the Bean-Stalk." This play is a fun-for-the-whole-family, comic rollercoaster ride of quirky characters, including an irreverent Cow, a crafty, bean-peddling Stranger, and a saucy Hen What Lays the Golden Eggs. Aimed at younger audiences, but with lots of laughs built in for adults, it's a perfect fit for families who want to share the joy of live-performance theater. Special "Family Night Out" performances on Saturdays, June 4 and 18 at 6pm.
When: June 5
"Cows that type? Hens on strike! Whoever heard of such a thing?!" Farmer Brown cries. When his grandaughter Jenny comes to visit, Farmer Brown declares a "tech-free zone". This hilariously "mooooo-ving" new musical is about negotiation and compromise. Recommended for ages 4 and up.
The Great Dinosaur Mystery
Where: The Puppet Co. Playhouse
When: June 9 – July 17
DinoRock Productions returns to the Puppet Co. Playhouse with this story is set in the basement of the Natural History Museum. Dr. Vander Plastercaster is about to give the audience a behind-the-scenes tour of a new dinosaur exhibit when she finds a mysterious box. Enter Detective Joe Kafootsie, Special Forces: Strange Phenomena Detail. He's found a giant shoe and thinks it might belong to a dinosaur! Suddenly dinosaurs begin appearing with messages from a mysterious character named Tootsie. Who is Tootsie? What do the messages mean? What's going on? It's all part of the great, great, great, great Great Dinosaur Mystery! Recommended for ages 4 and up.
PLAY! A Video Game Symphony
When: July 8, 8:30pm
Award-winning music from Super Mario Brothers, World of Warcraft, Final Fantasy, the Legend of Zelda, Halo, Battlefield 1942, and many more. Outstanding visuals on huge screens in-house and on the lawn highlight memorable moments from these blockbuster video games.
Filed under All ages, DC, Live Entertainment, Maryland, Music, Theatre
Tagged as 1st Stage Theater, A Year with Frog and Toad, Adventure Theatre, Alden Theatre McLean Community Center, Art on the Horizon, Bears Everywhere, Children's Theater in the Woods, Clack, Click, DC Children's Theater, Discovery Theater, Drumming with Dishes, Ford's Theatre, George and Martha – Tons of Fun, Imagination Movers, Imagination Stage, Jack and the Beanstalk, Joanie Leeds, Kennedy Center, Landmark Mall, Liberty Smith, Lisner Auditorium, Millennium Stage, Moo, NSO Family Concert: Beethoven Lives Upstairs, NSO Kinderkonzert: Got Rhythm?, NSO Teddy Bear Concert: Bears, Peter and the Wolf, PLAY! A Video Game Symphony, Ripley Center, The Day John Henry Came to School, The Great Dinosaur Mystery, The Puppet Co., The Wind in the Willows, Washington DC Family Activities, Washington DC Kids Activities, Wolf Trap
Gustafer Yellowgold: A Concert/Movie Combo for Kids
A unique show is coming to the Alden Theatre at the McLean Community Center in a couple of weeks — Gustafer Yellowgold is described by the venue as "equal parts pop concert and animated movie." His website bio further explains that he "is a friendly creature who came to Earth from the sun and is living out an explorer's life in a slightly psychedelic version of the Minnesota woods."
Okay, I'm intrigued and think my kids will be, too. But, as I'm not that familiar with Gustafer's shows, here's more about them, straight from the creature himself: "Gustafer Yellowgold concerts are a one-of-a-kind blend of live music and moving image, projected in vivid color onto a large screen. The minimally animated illustrations are accompanied by illustrator/songwriter Morgan Taylor's catchy and original story-songs, for a truly different multimedia experience that entrances children and adults alike."
The show, recommended for ages 4 and up, takes place on Sunday, November 21, at 3pm. Tickets are $12/person, $8/McLean residents. The McLean Community Center Alden Theatre is located at 1234 Ingleside Avenue in McLean.
Filed under Gradeschoolers, Live Entertainment, Music, Preschoolers, Preteens, Theatre, Virginia, Weekend
Tagged as Alden Theatre McLean Community Center, Gustafer Yellowgold
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The funeral of Mohammed Mazin Alian, 20, in Alnusierat refugee camp. (Photo: Abdallah Aljamal, PC).
Two Palestinian men from Gaza succumbed to their wounds that they sustained during protests on Monday, May 14, when Israeli forces killed over 60 Palestinian protesters along the Gaza border.
Mouin Abdelhamid al-Saai, a 58-year-old man from the al-Shati refugee camp in northern Gaza, died in Gaza's al-Shifa hospital on Saturday, according to Gaza's Ministry of Health.
#Gaza| According to official statistics, 59 Palestinians, including 7 children, were killed and some 2,771 others injured on May 14 alone as the Israeli forces used excessive force.
These exclusive photos were contributed to the Palestine Chronicle by Palestinian photo-journalist Abdallah Aljamal.


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Q: My android notification icon is a white square I am using Raix:Push (Meteor.js push-notification plugin) to send notifications to my android app (Built using meteor's inbuilt cordova). The only problem is that I am getting a white square as notification Icon when the notification arrives. I read we have to use a white notification with a transparent background added to the following path while building the app.
cordova-build-override/platforms/android/res/drawable/pushicon.png

I have done this but nothing seems to have changed. I still get a white square. I have also added the name of the icon to the client startup file under Push.Configure
Anyone experienced this before, any ideas?

A: Did you set the icon in your push client?
 Push.Configure({
android: {
  senderID: Meteor.settings.public.fcm.senderId,
  iconColor: '#0C431B',
  icon: 'pushicon',
  badge: true,
  sound: true,
  alert: true,
  vibrate: true,
},

A: I figured this out. I needed to put this folder structure:
cordova-build-override/platforms/android/res/drawable/pushicon.png

at the root of my project, as opposed to inside the /.meteor folder

redpajama_set_name: RedPajamaStackExchange


eRayn3 | Sunway Putra Hotel Kuala Lumpur Introducing Malaysian Style Hi-Tea!
Sunway Putra Hotel Kuala Lumpur Introducing Malaysian Style Hi-Tea!
Starting for 4th August 2018, Sunway Putra Hotel Kuala Lumpur will be offering a Malaysian Style Hi-Tea Buffet during weekends (including Malaysia's National Day) to its diners at; Coffee House on every Saturday and Atrium Lounge on every Sunday.
Apart from the buffet, a duo performer, Lili Jannah and Arie will also be performing on both; Saturday and Sunday serenading all time favorites while diners can enjoy the scrumptious buffet.
Priced at RM 79 nett (for Coffee House) and RM 59 nett (Atrium Lounge) respectively available from 21pm-5pm. Senior Citizens and Children (aged 7 – 12 years old) priced 50% off the adult charges and children aged 6 years below eat for free!
Starting from 1st September 2018 too, children could enjoy in-door playground specially set-up at Executive Lounge too.


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Twitch app allows you to get real experience of live social video platform for gaming as it is the leading app for such kind of activities as you can get access of live video games and all of that available for you all times anywhere in the world. you can have fun or watch league of legends and live art demos as all of this available just for you only on Twitch right now.
Watch live or record top video games like cooking, music, special events and even more.


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\section{Introduction} \label{sec:intro}

Over 100 years ago Albert Einstein published his theory of General Relativity (GR) \citep{einstein1915}. Two months later,
Karl Schwarzschild published a solution to Einstein's field equations \citep{Schwa} describing the gravitational field outside a spherically symmetric and static body. This solution is useful to describe the spacetime curvature generated by astrophysical objects such as stars and was later understood to describe a black hole (BH). A BH is a region of spacetime where the gravitational field is so strong that not even light can escape beyond the event horizon. A Schwarzchild BH is fully characterized by its mass. In 1963, Kerr constructed a solution that describes the gravitational field of a rotating BH \citep{Kerr} which is completely characterized by its mass and angular momentum.

In recent years there has been important observational evidence of the existence of BHs. For instance, the observation of the stars orbiting with a very short period around Sgr A* in the center of our galaxy indicates the presence of a supermassive BH \citep{Ghez, Ghez2, genzel, genzel2, Ghez3, genzel3}, the detection of gravitational waves produced by BHs merger by LIGO-Virgo collaborations \citep{GW, GW1, GW3}, and the imaging of the M87 BH shadow by the EHT collaboration \citep{M87}.

Since BHs do not emit electromagnetic radiation, one way to study these enigmatic entities consists in observing their influence on stars, accretion disks, gas particles, etc., that orbit them. For certain astrophysical systems, the positions of the orbiting bodies and the redshift/blueshift of the photons they emit are available and can be measured. For this reason, several models that relate these observational quantities of the orbiting objects to the mass and the mass-to-distance ratio of the BH have been developed.

Water megamasers, emitting at 22 GHz, are astrophysical objects that have been found within Active Galactic Nuclei (AGNs), where they orbit central BHs \citep{claussen1984water}. The prefix ``mega'' refers to the intense luminosity emitted by the water maser in the AGN $(L > 10 L_{\odot})$ compared to luminosity of galactic masers $(L < L_{\odot})$ which are associated with star-forming regions \citep{genzel1977h2o}.

Very Long Baseline Interferometry (VLBI) is an accurate technique for observing the positions and displacements of these maser features, as it gives us appropriate sub-milliarcsecond resolution for objects at (sub)parsec distances from the center of active galaxies. Telescopes like the Green Bank Telescope (GBT), the NRAO Very Long Baseline Array (VLBA)\footnote{The VLBA is operated by Associated Universities, Inc., under a cooperative agreement with the National Science Foundation which is a facility of the National Radio Astronomy Observatory (NRAO).}, the European VLBI Network (EVN)\footnote{The European VLBI Network (EVN) is a network of radio telescopes located primarily in Europe and Asia, with additional antennas in South Africa and Puerto Rico. Support for proposal preparation, scheduling, and correlation of EVN projects is provided by the Joint Institute for VLBI ERIC (JIVE); ERIC stands for the European Research Infrastructure Consortium.}
 and the Effelsberg 100 m one \citep{reid2009megamaser, MCP2, MCP3}, provide us with observational data of positions and redshifts associated with the megamasers that allow us to estimate the mass of their central BH within an appropriate model.

In \citep{Hern}, the authors used a dynamic Keplerian model with relativistic corrections for masers features to fit the mass of the BH hosted at the core of the NGC 4258 galaxy. This modeling related the radial velocity of water megamasers to the observed redshift of the emitted photons by making use of the optical definition of the redshift. The Newtonian approach works accurately when the object is far enough from the gravitational source, but when the orbiting objects get close enough to the BH event horizon, the general relativistic effects become stronger and relevant. Thus when this happens, the redshift of the photons begins to have important general and special relativistic contributions.

A model for test particles orbiting a Kerr BH was presented at \citep{2015}. In this formalism, the influence of the BH on the curvature of spacetime was taken into account, and therefore the so-called gravitational redshift was included in the total redshift of photons emitted by particles orbiting the BH.

In \citep{Herrera_ngc}, the authors used a simplified version of the latter model and considered a Schwarzschild BH with water megamasers orbiting the AGN of NGC 4258. The authors estimated the mass-to-distance ratio of the BH at the galactic core of this galaxy as well as its peculiar redshift using a general relativistic approach. The peculiar redshift is related to the peculiar velocity of the galaxy with respect to the distant observer using the same optical definition.

Another way to estimate the BH mass without using a model based on gravity resides on a correlation between the mass of the BH and the bulge luminosity $M_{BH}-L_{bulge}$ of the host galaxy \citep{M-L}, it is important to note that this correlation uses the K-band in the near-infrared instead of the visible spectrum. This correlation was initially based on the study of disk galaxies, but it works also
for elliptical galaxies because they are morphologically equivalent to the bulge of disk galaxies.

One of the brightest known H$_2$O maser sources was discovered in the AGN of the TXS 2226-184 galaxy using the Effelsberg telescope \citep{FirstTXS}. The isotropic luminosity associated with this water maser is so large, $ L = 6100 \pm 900 L_\odot$ \citep{FirstTXS}, that it is called a ``gigamaser''. The distance to TXS 2226-184 is $D = 103.8571 \pm 0.2606$ Mpc\footnote{In \citep{kuo2018} the reported distance to TXS 2226-184 is $D=107.1$ Mpc, but since this distance has no associated uncertainties we can not use this result to estimate the value of the black hole mass with properly propagated errors.} as a result of applying Hubble's law to the reported systemic velocity $V_{lsr,radio}=7270\pm 18.24$ km s$^{-1}$ in \citep{Taylor_2002,Gigamaser} and assuming $H_0= 70$ km s$^{-1}$ Mpc$^{-1}$ \citep{kuo2018} (these authors did not report uncertainties taken into account for the Hubble constant value). TXS 2226-184 has been optically classified as an elliptical galaxy \citep{FirstTXS}.

 In \citep{ball} the authors observed with the VLBA seven H$_2$O maser emission clusters in TXS 2226-184. The clusters were linearly distributed from northeast to southwest with position angle $= +25^o$ . The observational maser data have five redshifted maser features and two blueshifted maser features, where only one blueshifted maser was along the linear distribution (the most southwest maser feature), and the other one was about 7 mas southeast of the linear distribution. Given these features, the authors associated the distribution of the maser clusters with a parsec-scale, rotating disk, where the farthest blueshifted maser was situated completely outside the disk. However, the data reported in \citep{ball} did not provide absolute positions of the maser features.

In \citep{Gigamaser} the authors made new observations of the H$ _2$O gigamaser in TXS 2226-184 with the VLBA (one epoch) and the European VLBI Network (EVN; two epochs). The authors detected six maser features in epoch 2017.45 (VLBA), one in epoch 2017.83 (EVN), and two in epoch 2018.44 (EVN). In the data corresponding to epoch 2017.45 (VLBA), only one blueshifted maser feature was detected, while the other 5 maser features were redshifted with respect to the systemic velocity of TXS 2226-184. In addition, the authors provided absolute positions of the maser features.

Most of the masers located in the accretion disks of supermassive BHs are megamasers. Estimates of BH masses using megamaser dynamics are of the order of ${10^6-10^7 M_{\odot}}$. So far no estimate of the mass of central BHs in galaxies hosting a gigamaser has been made, leaving the question of whether the high luminosity of the maser is related to a central BH mass of magnitude greater than ${10^6-10^7 M_{\odot}}$.

New observations of the gigamaser made with the VLBA have been published in \citep{Gigamaser}, and in principle, give us the opportunity to investigate whether there is a connection between its intense luminosity and the mass of the central BH.

\section{General relativistic model}
We assume a static and spherically symmetric spacetime, so we use the Schwarzschild metric (in natural units):
 {\small \begin{equation}
    ds^2=\dfrac{dr^2}{f}+r^2(d\theta^2+\sin{\theta}^2 d\varphi^2)-fdt^2,\quad \quad   f=1-\frac{2m}{r},
\end{equation}} where $m = GM/c^2$, and $M$ is the BH mass.

The general relativistic model which we use was developed in \citep{Herrera_ngc}. We consider that massive test particles (photon sources such as stars, masers, and other bodies) follow a geodesic path. The geodesic motion of massive test particles is described by the 4-velocity $U^\mu=(U^t,U^r,U^\theta,U^\varphi)$ normalized to unity $U^\mu U_ \mu=-1$.

From this relation we obtain an equation similar to the conservation law of energy for a non-relativistic particle with energy $E^2/2$. For the special case of equatorial and circular orbits, the expression for the 4-velocity components simplifies since $U^r= 0 =U^\theta$. Therefore

 {\small \begin{equation}
    U^t =\sqrt{\dfrac{r}{r-3m}}, \quad \quad U^\varphi= \pm \frac{1}{r}\sqrt{\dfrac{m}{r-3m}},
\end{equation}}here the $\pm$ signs correspond to the angular velocity direction of the orbiting object.

The photons emitted by the test particles have a 4-momentum $k^\mu=(k^t,k^r,k^\theta,k^\varphi)$ and move along null and equatorial geodesics ($k^\mu k_\mu=0$), so that the emitted and detected frequencies can be written in terms of the parameters of the metric.

The Schwarzschild redshift and blueshift that emitted photons experience on their way from the source bodies towards a static observer, which stands far away from the BH ($U^{\mu}|_{d} \! = \! (1,0,0,0)|_{d};   r_{d} \! \rightarrow \infty $), read
 {\small \begin{align}
       {1 + z_{Schw_{1,2}} \equiv 1 + z_{g}+ z_{kin_{\pm}}   \equiv \frac{\omega_e}{\omega_d} = \frac{(k_{\mu} U^{\mu})|_{e}}{(k_{\mu} U^{\mu})|_{d}} = \frac{(U^{t}- b{_{\mp}} U^{\varphi})|_{e}}{(U^{t}- b{_{\mp}} U^{\varphi})|_{d}} \approx (U^{t}- b{_{\mp}} U^{\varphi})|_{e}} ,
\end{align} }
where the subscripts $(1/2)$ correspond to $(+/-)$, the subscript $(e)$ refers to the emitter, $(d)$ to the detector and $\omega$ is the photon frequency; here $b_{\mp}$ is the light bending (deflection) parameter to the rigth/left of the line of sight, $z_{g}$ and $z_{kin_{\pm}}$ represent the gravitational and kinematic redshifts, respectively, and are expressed as:

 {\small \begin{equation}
   {b_{\mp}= \mp \sqrt{- \frac{g_{\varphi \varphi}}{g_{tt}}} = \mp \sqrt{\dfrac{r_{e}^{3}}{r_e-2m}} },
\end{equation}}

 {\small \begin{equation}
    z_{g}= \sqrt{\dfrac{r_e}{r_e-3m}}-1 , \qquad z_{kin_{\pm}}=\pm \sqrt{\dfrac{m r_e}{(r_e-2m)(r_e-3m)}},
    \label{zg-zkin}
\end{equation}}where the $\pm$ signs in Eq. (\ref{zg-zkin}) correspond to an approaching/receding object with respect to a far away observer, yielding the kinematic redshift $z_{kin_{+}}$ and blueshift  $z_{kin_{-}}$.

{Hereinafter we use the approximation $\Theta \approx r_e/D$ for the angular distance between a given maser and the BH position, where $r_d = D$ is the distance from the detector to the BH. Then the gravitational and kinematic redshift become:}
 {\small \begin{equation}
    {z_{g}= \sqrt{\dfrac{1}{1-3\frac{m}{D\Theta}}}-1 }, \qquad
    {z_{kin_{\pm}}=\pm \sqrt{\dfrac{\frac{m}{D\Theta} }{(1-2\frac{m}{D\Theta})(1-3\frac{m}{D\Theta})}}.}
\end{equation}}

For a full description of realistic systems, we must take into {account the recession redshift ${z_{rec}}$ given by the composition of the peculiar redshift, ${z_{p}}$, related to the peculiar velocity of the galaxy with respect to the observer, and the cosmological redshift, ${z}_{cosm}$, associated with the expansion of the universe  when the galaxy is within the Hubble flow; both of these redshifts have different nature.} Thus the total redshift is given by the following composition \citep{Composicion}\footnote{Strictly speaking one should consider a Schwarzschild-Friedmann-Robertson-Walker metric in order into taking into account the expansion of the universe in the BH geometry that generates the cosmological redshift. However we do not have the expression for the redshift for such a metric at hand, and as a first approximation we make use of the Schwarzschild background.\\

The peculiar redshift is defined through the special relativistic boost \citep{RindlerSR1989}
 {\small \begin{equation*}
    1+z_{boost}=\gamma(1+ {\beta} \cos{\alpha}), \quad \gamma \equiv (1- {\beta^2})^{-1/2}, \quad {\beta\equiv \frac{v_p}{c}},
\end{equation*}}where ${v_p \equiv c~ z_p  }$, and ${v_p} \cos{\alpha}$ is the radial component of the peculiar velocity of the galaxy with respect to
the observer (see Fig. \ref{fig:doppler}). Thus, in principle the $\alpha$-angle encodes the transversal motion of the galaxy with respect to the line of sight.}:
{\small \begin{equation}\label{redshi_tot}
    1+z_{tot_{1,2}}=(1+z_{Schw_{1,2}}){(1+z_{rec}); ~ (1+z_{rec})=(1+z_{boost})(1+z_{cosm}).}
\end{equation}}

\begin{figure}[ht!]
    \centering
    \includegraphics[scale=1.6]{TXS_V.png}
    \caption{The motion of the galaxy hosting the black hole with respect to a distant observer. The galaxy has a peculiar velocity {${v_p}$ and a cosmological one ${v_{cosm}}$. The composition of the corresponding redshifts yields the observed recession redshift related to the velocity ${v_{rec}}$.}}
    \label{fig:doppler}
\end{figure}

\section{Mass-Luminosity correlation}
    Increased availability in BH mass demography has led to observe that there appears to be a close correlation between the BH mass and the bulge properties of the host galaxy.
    The most studied correlations of bulge properties with black hole masses are given by: the mass-velocity dispersion correlation $M_{BH}-\sigma_{*}$ \citep{gebhardt2000relationship, ferrarese2000fundamental} and the mass-luminosity correlation $M_{BH}-L_{bulge}$ \citep{dressler1989active, kormendy1995inward, marconi2003relation}. In \citep{kormendy1995inward} the authors found that the BH masses show a correlation with the absolute blue luminosity of the host bulge for eight galaxies.

    In \citep{marconi2003relation} luminosity was taken in the $K-$band centered on $2.2 ~ \mu m$ (in the near-infrared 136 THz range) instead of the blue luminosity because the scatter in the first band is smaller than in the second one.

    For an overview of the $M_{BH}-L_{bulge}$ correlation, followed by a larger sample of galaxies of different type and distinct BH masses hosted at their center, see Section 6 in \citep{M-L}. In the case of elliptical galaxies we must consider their total luminosity, because these galaxies are morphologically equivalent to the bulge component of disk galaxies.

    The next equation shows the correlations of $M_{BH}$ with $L_{K,~bulge}$ \citep{M-L}

 {\small \begin{equation} \label{lummm}
        \dfrac{M_{BH}}{ {10^{9}\mathrm M}_\odot}=\left( 0.542_{-0.061}^{+0.069}\right)\left(\dfrac{L_{K,~bulge}}{10^{11}L_{K\odot}}\right)^{1.21\pm 0.09},
    \end{equation}}where $L_{K,~bulge}$ is the bulge luminosity, and $L_{K\odot}$ is the solar luminosity, both in the $K$-band.

\section{Observation of the H$_2$O gigamaser in TXS 2226-184}

In this paper, we consider the VLBI observations of gigamaser features in the AGN of TXS 2226-184. We use the data reported by \citep{Taylor_2002, Gigamaser}. The latter authors measured the redshift of photons emitted at the points of maximum emission and their absolute positions with errors lesser than 1 milliarcsecond. According to the authors \citep{Taylor_2002, Gigamaser}, the TXS 2226-184 galaxy is located at a distance $D= 103.8571 \pm 0.2606$ Mpc with adopted center at $\alpha_{2000} =22^h:29^m:12^s.494600 \pm 0.000291, \delta_{2000} =-18^h:10^m:47^s.24200 \pm 0.000409$, with peculiar velocity V$_{lsr,radio} = 7270 \pm 18.24$ km s$^{-1}$.
We use the observations of redshift and masers positions corresponding to VLBA data epoch 2017.45 on June 12, 2017. The VLBA provides an angular resolution of $0.2$ miliarcsec (mas) and spectral resolution of 1 km  s$^{-1}$ at 22 GHz. The observational data of the maser were sparse, with only six masers features reported, five redshifted, and only one blueshifted. Despite the minimal quantity of data, we still can perform a statistical fit to estimate the mass-to-distance ratio of the central BH of this galaxy.

\section{Statistical fit with our general relativistic model}
The observations indicate that set of water maser clouds is allocated on the accretion disk of a central BH hosted at the AGN of the galaxy TXS 2226-184.  These features lie on the equatorial plane since we see the disk edge-on, and we shall assume that their motion is circular around the BH. Therefore we can make use of equation \eqref{redshi_tot} to model their total redshifts and blueshifts, which are directly observed.

To fit the parameters, we use the least-squares estimation $\chi^{2}$ by a Bayesian statistical fit based on the Markov-Chain Monte Carlo scheme applied to the maser data using the general relativistic formalism. We emphasize that we apply our fits to directly measured general relativistic invariant quantities.

{The parameters we fit are the mass-to-distance ratio M/D, the Right Ascension (RA) offset ${x_0}$ of the BH and the  recession redshift of the galaxy ${z_{rec}}$. The position data of the maser features reported in \citep{Gigamaser} are presented by taking the brightest maser as a reference.} Instead of taking a reference maser we propose a new reference origin at the geometric center of the maser system (see Fig. \ref{fig:position}), so that the fitted BH position will be estimated with reference to that point. {However, by varying $y_{0}$ within the observed height of the disk, we see that the estimate of $M/D$ changes at the third significant figure after the decimal point in comparison to the estimation with $y_0=0$ mas. This change is well behind the $M/D$ uncertainty and reveals the thin character of the disk, implying that $y_0$ does not influence the estimation of this quantity.} Indeed we shall assume that masers do not lie completely along the midline but are uniformly scattered about it with a scattering angle $\delta \varphi$  {and that the disk inclination $\theta_0$ is parameterized by the polar angle towards the equatorial plane.}

Now, we present the $\chi^2$ of the general relativistic model based on \citep{Hern, Herrera_ngc}:
{\small
\begin{equation}\label{chi}
\chi^2=\sum_{k=1}  \frac{\left[\frac{v_{k,obs}}{c}-(1+z_{g}+ \epsilon { \sin {\theta_0}} ~  z_{kin_{\pm}}){(1+z_{rec})}+1\right]^2 }{\sigma_{z_{tot_{1,2}}}^{2} + { {\kappa}}^{2} z_{kin_{\pm}}^{2} \sin^{2}{\theta_0}{(1+z_{rec})^2} },
\end{equation}}where the first term in the numerator refers to the observed redshift and the remaining terms are related to our model. In the denominator $\sigma_{z_{{tot}_{1,2}}}^2$ is the error associated with the total redshift. This quantity is $|\delta z_{{{tot}_{1,2}}}|^2$ and means the variation of the total redshift as shown in \citep{Herrera_ngc}
 {\small \begin{equation}
     \delta z_{tot_{1,2}}=(\delta z_{g} + \delta z_{kin_{\pm}})(1+z_{rec}).
 \end{equation}}

Following the latter work, we consider the redshift errors caused by the errors in the positions so that
{\scriptsize$ \delta z_{g}=\left(1+z_{g}\right)^{3}\left[\dfrac{-3M}{2r^2}\right]\delta r$}, {\scriptsize $\quad \delta z_{kin_{\pm}} =\epsilon \sin{\theta_0}\left(z_{kin_{\pm}} \right)^{3}\left[\dfrac{6M^2-r^2}{2Mr^2}\right]\delta r$ } where {\scriptsize$\delta r = \sqrt{ \left( \frac{x_i-x_0}{r}\right)^2 \delta_{x}^2 + \left(\frac{y_i-y_0}{r}\right)^2 \delta_y^2}$}, and ($x_i$, $y_i)$ is the position of the i-th megamaser on the sky and $\delta x$, $\delta y$ are their respective errors.

 The quantities $\epsilon$, ${ {\kappa}}$ refer to the spread of the maser features by the azimuth angle \citep{Hern}

 {\small    \begin{equation}
        \epsilon \approx 1 - \frac{\delta \varphi^2}{2} + \frac{\delta \varphi^4}{24}, \quad \quad { {\kappa}}^2 \approx \frac{\delta \varphi^4}{4},
    \end{equation}}where the first expansion corresponds to the cosine function of the azimuthal angle $\varphi$ and ${\kappa}$ denotes induced uncertainties of the maser scattering under the assumption that $\varphi \ll 1$ and $ \varphi \sim \delta \varphi$.

    The observed data were rotated by an angle of $-87^o$ to fit the positions on the {horizontal axis}, and we considered an error propagation related to the rotation, according to the formula:
   {\small
     {\small
     \begin{align*}
        \sigma_{x_{rot}}^{2} = \left( \frac{ \partial x_{rot} }{\partial x} \sigma_x\right )^2 + \left(\frac{ \partial x_{rot}}{\partial y} \sigma_y \right)^2, \\
        \sigma_{y_{rot}}^{2} = \left( \frac{ \partial y_{rot} }{\partial x} \sigma_x\right )^2 + \left(\frac{ \partial y_{rot} }{\partial y} \sigma_y \right)^2,
    \end{align*} }}where $x_{rot},~ y_{rot}$ are the rotated positions, $\sigma_{x,y}$ are the non-rotated uncertainties, and $\sigma_{x_{rot}, y_{rot}}$ are the rotated ones.

    \begin{figure}[ht!]
    \centering
    \includegraphics[scale=.24]{txs-m}
    \caption{{\small View of the rotated H$_2$O maser system in TXS 2226-184. The star indicates the origin, the blue dot the blueshifted maser, and red dots the redshifted masers \citep{Gigamaser}.}}
    \label{fig:position}
    \end{figure}

\section{Results}

We have obtained two different estimates for the mass of the BH in TXS 2226-184 based on two different approaches being consistent between them. The estimate based on the motion of the masers and the frequency shift of the photons they emit is more precise. It is the first reliable estimate of the mass-to-distance ratio of the central BH of this galaxy.

\subsection{General relativistic model}

This method allows us to make a statistical fit with good accuracy of the mass-to-distance ratio (see Table \ref{t.result}) despite the fact that we have few data from the masers. We also find that our model provides a good fit to the data, yielding a value of the reduced ${\chi^2_{red}=1.512}$ with a maser scattering angle ${\delta \varphi =0.35}$ rad { and assuming a completely edge-on view of the accretion disk ($\theta_0 = \pi/2$ rad}). Table \ref{t.result} shows the values for the best fit and the uncertainties {with $1\sigma$ confidence} associated to each of the estimated parameters. In Fig. \ref{fig:posterior} we present the posterior distribution of the general relativistic Bayesian fit {with flat priors for the parameters of} the central BH at the core of TXS 2226-184.

    \begin{table}[ht!]
    \centering
    \caption{Posterior parameters for the BH located at the core of TXS 2226-184.}
    \label{t.result}
    \begin{tabular}{c c}
    \hline \hline
      TXS 2226-184  & Relativistic Estimation   \\ \hline \hline

      \rowcolor{gris}
      $M/D$  ($10^4$  \( M_\odot\)/Mpc)  & {\small ${3.54^{+0.2}_{-0.2}}$}  \\
     $z_{rec}$ $(10^{-2})$ & ${2.43_{-0.0011}^{+0.0011}}$  \\
     ${v_{rec}}$ ($km/s$) & {\small ${7289.8^{+3.4}_{-3.3}}$ }  \\
     \rowcolor{gris}
     $ x_0 $ (mas)  & ${0.69^{ +0.2}_{ -0.2}}$ \\
     $\chi^{2}_{red}$   &  {1.512} \\ \hline \hline
    \end{tabular}
    \end{table}

    \begin{figure}[ht!]
        \centering
        \includegraphics[scale=.33]{posterior.png}
        \caption{{\small The posterior distribution of the general relativistic Bayesian fit. Here the BH mass-to-distance ratio $M/D$ is expressed in ${\times 10^4}$  \( M_\odot\)/Mpc, ${x_0}$  is expressed in mas, and{ $ {v_{rec}}$ in km s$^{-1}$. Contour levels correspond to 1$\sigma$ and 2$\sigma$ confidence regions. We have considered flat priors for $M/D$: [0, 200] ${\times 10^4}$  \( M_\odot\)/Mpc, $x_0: [-1.5 , 1.5]$ mas, and $z_{rec}: [0, 0.03]$ ($v_{rec}: [0 , 9000]$ km s$^{-1}$).
}}}
    \label{fig:posterior}
    \end{figure}

     In Table \ref{t.result} we also display the most probable value of the redshift ${z_{rec}}$ { (and its associated velocity ${v_{rec}}$) which is related with the recessional motion} of the galaxy. {The recession velocity} we obtain is consistent with the systemic velocity of the galaxy previously reported in \citep{Taylor_2002}. {Actually, what the statistical fit estimates is the recession redshift which is the composition of the cosmological and the peculiar redshifts, despite the fact that these quantities have a very different nature. Since both of these redshifts do not depend on the position of the masers, they are degenerate and cannot be estimated separately.
}

    If we use the distance to the BH based on \citep{Taylor_2002} {\small D= 103.85 $\pm$0.26 Mpc} we get a BH mass estimate:
 {\small \begin{equation}\label{masaRG}
       {M = 3.67 ^{+0.2}_{-0.2} \times 10^6 {\mathrm M}_\odot.}
    \end{equation}}

    We can also use this model to calculate the gravitational redshift of each maser. Below in Table \ref{t.zg} we display the gravitational redshift for the two closest masers to the black hole.\\
\begin{table}[ht!]
    \centering
    \caption{Gravitational redshift for the masers closest to the central BH.}
    \label{t.zg}
    \begin{tabular}{c c c}
    \hline \hline
         Maser & $z_g$ & velocity (km/s)\\ \hline \hline \rowcolor{gris}
         Red & {\small ${2.74}\times 10^{-7}$} & {\small ${8.21}\times 10^{-2}$} \\
          Blue & {\small${1.59}\times 10^{-7}$} & {\small ${4.77}\times 10^{-2}$}\\ \hline \hline
    \end{tabular}
\end{table}

    \subsection{BH Mass-Luminosity correlation}

    In \citep{FirstTXS}, the authors measured the luminosity of the TXS 2226-184 galaxy in the K-band, the adopted luminosity is $L_{k}= 2.5 \times 10^9 L_{\odot}$ with no reported uncertainties. In this framework, we accordingly substitute this reported luminosity into equation (\ref{lummm}), thus, the BH mass estimate reads
 {\small    \begin{equation}\label{masaML}
       M_{BH} = 6.24  ^{+ 3.6}_ {- 2.3 } \times 10^6 {\mathrm M}_\odot.
    \end{equation}}

    Using the mass-luminosity method, we get a mass of the same order of magnitude as the estimate using the method of general relativity, but we get a substantial uncertainty compared to that estimate, in fact an order in magnitude larger.

    Comparing these results, we see that a fit based on the redshift of the particles is more precise and reliable than using estimates based on the galaxy properties like luminosity.

\section{Conclusions and discussion}

Our general relativistic approach provides estimates for the mass-to-distance ratio of the BH hosted at the AGN of TXS 2226-184 ({\small M/D=${3.54^{+0.2}_{-0.2}} \times 10^4  M_\odot/$Mpc}) as well as for its {RA offset, the recession redshift of} the host galaxy and its associated velocity. Furthermore, this model also allows us to quantify the gravitational redshift of each of the maser features; we calculate it for the two closest masers to the central BH of this galaxy. {The gravitational redshift obtained for each of the gigamasers is one order of magnitude smaller than the detector sensitivity, implying that this quantity cannot be currently detected in an unambiguous manner in this astrophysical system.}

Starting from our estimate of the mass-to-distance ratio of the BH located at the core of TXS 2226-184 and the distance to this galaxy based on a previous work \citep{Taylor_2002}, we obtain ${M = 3.67 ^{+0.2}_{-0.2}} \times 10^6 {\mathrm M}_\odot$. Therefore, TXS 2226-184 hosts a black hole with a mass of the same order expected for BHs hosted in galaxies associated with megamaser emission. This result allows us to conclude that the high luminosity of the gigamaser is not related to a more massive central black hole.

By comparing the results obtained for the mass of the BH hosted in TXS 2226-184, (see Eq. (\ref{masaRG}) and Eq. (\ref{masaML})), we find that the mass obtained from the $M_{BH}-L_{K, ~ bulge}$ correlation is approximately 1.6 times the mass obtained from the statistical fit using the general relativistic method. Finally, we note that the accuracy of the results differs by an order of magnitude, with the relativistic fit being the most accurate; however, these results are not mutually exclusive due to the uncertainties in the estimate based on the mass-luminosity correlation. Although less accurate, the $M_{BH}-L_{bulge}$ correlation is a good first approximation for systems for which there is no relevant data to make use of the general relativistic model.

{Among the possible systematic errors of our modeling one could consider modifications of the edge-on view and a warped disk, in particular. By performing small variations in the inclination disk parameter $\theta_0$ (up to 5 degrees\footnote{According to \citep{MCP3} and \citep{Darling_2017}, if a thin disk is inclined by more than $\sim5$ degrees from an edge-on view, the masers will be no longer beamed toward us.}), the $M/D$ estimation gets changes of the order of 1\%, which is well-behind the uncertainty of this ratio. According to Eq. (\ref{chi}) the warping of a disk is correlated with the $M/D$ parameter. By considering a linear inclination warping along the radius of the disk, and performing variations in the inclination gradient (up to 0.04 rad/mas based on the masers distribution), the M/D estimation is altered around 5\% and the corresponding reduced $\chi^2_{red}=1.43.$}

\section*{Acknowledgments}
The authors are grateful to D. E. Villaraos-Serés for fruitful discussions and to FORDECYT-PRONACES-CONACYT for support under grant No. CF-MG-2558591; U.N. also was supported under grant CF- 140630. A.H.-A. and U.N. thank SNI and PROMEP-SEP and were supported by grants VIEP-BUAP No. 122 and CIC-UMSNH, respectively. O.G.-R. and A.V.-R. acknowledge financial assistance from CONACYT through PhD grants No. 885032 and No. 1007718, respectively.

redpajama_set_name: RedPajamaArXiv


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This mezuzah is my favorite that we own. It's lovely and simple. The flowers, details, and little stone make it so beautiful! It's feminine without being overtly girlie.
This mezuzah is beautiful. The colors are vibrant and rich. It's pretty heavy and solid too.
The mezuzahs and scrolls look great, assembly should be left to the consumer. We did not request for our mezuzahs to have the scrolls placed inside... and now knowing how sloppily the job is done, if we order here in future, we will request that the scrolls NOT be placed inside by the manufacturer.
I purchased this mezuzah for my daughter's apartment. I was especially looking for one with the blessing. It is beautiful and different from anything else I found. Also, I love that it comes with adhesive tape as well as nails.
This is exactly what I was hoping for....really beautiful to look at and we love the Morrocan blessing!
What a beautiful mezuza. Can't wait to put it up.
I love that instructions are included and also information in case I need help with my Mezuzah. Thank you, my mezuzah is beautiful and I'm happy with it.


Prepare grill. To prepare kebabs, combine first 7 ingredients; toss well. Thread 3 steak pieces, 2 peach wedges, 1 onion wedge, and 1 bell pepper piece alternately onto each of 16 (12-inch) skewers. Place kebabs on grill rack coated with cooking spray; grill 6 minutes or until tender, turning occasionally. Place kebabs on a platter; cover loosely with foil. Let stand 5 minutes. To prepare sauce, combine chopped parsley and next 5 ingredients (chopped parsley through garlic), stirring with a whisk. Spoon over kebabs. Garnish with parsley sprigs, if desired.


As FBI Director James Comey testifies before Congress today, conservative group Citizens United is releasing more than 1,300 pages of emails between Hillary Clinton's chief of staff at the State Department, Cheryl Mills, and Heather Samuelson, a former Clinton 2008 staffer and Mills employee at State.
Last year, Politico reported that Samuelson was responsible for determining which of Clinton's emails were retained for federal records and which were destroyed.
Mills, who is also Clinton's personal attorney, was given immunity in the FBI's investigation into the former secretary of state's handling of classified material on her private server.
Comey confirmed Wednesday morning that Mills was a "subject" in the FBI's investigation into Clinton's emails and that classified material was also found on Mills' computer.
The correspondence, obtained by Citizens United through Freedom of Information Act requests and lawsuits, span from late 2012 to early 2013 and "shed light on the activities of Mills and Samuelson at the State Department, which included appointments, ethics, [and] vetting," according to the group.


text:
Australian Navy to Upgrade Paluma Class Vessels with FarSounder Sonars
By The Maritime Executive 2016-08-24 19:57:03
FarSounder, Inc. has been awarded a contract to provide four complete FarSounder-1000 systems plus spare parts for the upgrade of four Paluma class hydrographic Survey Motor Launches operated by the Royal Australian Navy (RAN). Seismic Asia Pacific Pty. Ltd. of Salisbury, Australia will be responsible for the purchase of the equipment and assist with the systems integration. Seismic Asia Pacific is the FarSounder dealer for this project with BAE Systems as the prime contractor.
The 360 tonne Survey Motor Launches, HMA Ships Paluma (IV), Mermaid, Shepparton (II) and Benalla (II), were designed for operations in the shallow waters of northern Australia. Each Survey Motor Launch carries the latest in survey and computerized hydrographic data processing equipment and is fitted with the latest navigation aids. Their twin hulls provide good stability in heavy conditions, along with good living room and space below the main deck.
"The FarSounder team is proud to be a part of this upgrade program for the RAN fleet," Matthew Zimmerman, Vice President of Engineering at FarSounder, stated. "We appreciate our inclusion and that our products are recognized for the benefit they bring to this class of vessels."
Seismic Asia Pacific is a leading provider of Hydrographic, Oceanographic and Geophysical systems within Australia and throughout South East Asia and the Pacific Rim. "Including FarSounder's advanced sonar systems in SAP's portfolio of maritime equipment offers our customers the latest in innovative technologies," said Paul Duncan, Managing Director of Seismic Asia Pacific Pty Ltd Australia.
The products and services herein described in this press release are not endorsed by The Maritime Executive.
MarEx Blog
The Road to Green-Land
By Dimitri G. Vassilacos and Jason Dallas
The Future of Tugs in a Changing World
By Captain Henk Hensen
Record Low Newbuild Orders Placed in Q2, 2019
By Olivia Watkins
Tomorrow's Developments Today
By The Maritime Executive
A Safety Management System – Beacon or Burden?
By Karen van Vliet and Jan-Hendrik Hensen
Key Differences Between the ISM Code and Subchapter M
© Copyright 2019 The Maritime Executive, LLC. All rights reserved.

redpajama_set_name: RedPajamaCommonCrawl


text:
How a battery is thought to have burned down a huge electronics store
A faulty lithium-ion battery is thought to have sparked a blaze which caused hundreds of thousands of pounds damage at a major high street store.
The fierce fire swept through the Currys PC World and Carphone Warehouse store in Huddersfield, West Yorkshire, UK, in August with flames shooting through the roof.
Dozens of firefighters were needed to bring it under control but the fire devastated the store and ruined its stock.
A source told news website ExaminerLive the fire was caused by a customer's laptop which was on charge overnight in the store. Lithium batteries which power laptops can catch fire for all sorts of reasons which can cause them to go into what is known as thermal runaway. This happens when one cell in a battery overheats it can produce enough heat – up to 900°C (1652°F) – to cause adjacent cells to overheat. This can cause a lithium battery fire to flare repeatedly.
Another ExaminerLive reader said CCTV from the store had shown the fire was sparked by a laptop.
Currys did not confirm or deny the statements. The store is due to open on Valentine's Day 2020.
Incidents of thermal runaway are on the rise.
Lithium-ion battery fires on board planes are rarely publicised but a fire in a device could emit toxic smoke and potentially the battery may even explode, causing damage to the aircraft and putting lives at risk.
AvSax – which were devised by Huddersfield company Environmental Defence Systems Ltd - are the world's best-selling aircraft fire containment bags by far and are now on more than 15,373 aircraft operated by 75 airline companies across the world and have been used 31 times to deal with emergencies since the start of 2017.
AvSax won the prestigious Queen's Award for Enterprise in the UK in 2018.


If you haven't read the original post you can find it here. You can download all the icons and project file here.
I have added some more functions to my KBar and, of course, had to make some more icons.
Below, I'll go through the new icons and give some description on how each button works.
This is another script from Kyle Martinez. It's called Parametric Converter. This allows you to convert a square shape path into a parametric rectangle, or a circular bezier path into a parametric circle, thus giving you more options than you normally have with a regular bezier path (ie; size). IMPORTANT: To use these with KBar you should use his standalone scripts found on his website.
This is simple. It just makes this function possible in a single click instead of using the 'right click' drop down menu. Just set the button to invoke menu item "3693".
I've created an animation preset for quickly creating a fade on an audio track. It applies "stereo mixer" to a layer and then sets keyframes on both R and L channels to go from 100 to 0. The reason I use Stereo Mixer is because it gives a much better fade than if you keyframe Audio Levels. But it's a little tedious because you have to keyframe both chanels, so I made a preset. Here is the icon to go along with it.
Thanks to John Colombo I've finally got a great scriptlet for quickly removing all expressions from layers. It can be tedious to option click every single property, and I wish I could just do it in one click. This script will do that. It removes them from all selected layers and if you have none selected then it removes all of them within the comp. Super slick!
This is another one from Kyle Martinez. I don't use it terribly often, honestly, but I'm sure many people do. I have a habit of moving my comp around with spacebar (as I do is just about every other Adobe program). But sometimes it's nice to just click a button and have it snap to the center of the comp window. OCD with your workspace? This one's for you.


Is this ceramic ball the supervisor of the future?
In the freelance economy today, many workers are out on their own with no supervision and no bosses breathing down their necks. Developing positive work habits can be challenging for even the most motivated. Modeled after the retro stress ball, Bossy has a squishy touch and a small screen, and is designed to help independent workers divvy up and manage their time.
Bossy relies on gamification to keep its users continually engaged. While Bossy is sensitive to the bodily and emotional needs of its owner and presents small ideas for breaks, it also makes a game out of working time to help people establish a goal-oriented mindset. The cycle between cue, action and reward is central to how it works. And because it's a physical device and not an app, it makes for a better constant companion.


A well arranged and spacious holiday cottage located in a peaceful, quiet and scenic area with only 150 metres to the fjord.
The cottage is open, bright and has a mezzanine where children can relax and enjoy themselves.
The kitchen is open with modern appliances, separated from the dining and living room with a half-wall. There is an air/air heat pump and a fireplace. The kitchen, bathroom and hallway all have tiled and heated floors. The other floors of the house are wood.
From the dining room and living room you can access the terrace, that goes the whole way around the house. Every summer the a bathing jetty is installed in the common area.
The TV is located on one of the childrens bedrooms. The TV is connected to Apple TV and not an ordinary TV antenna.


text:
Netflix's ad-supported tier won't have everything at launch
Netflix's upcoming ad-supported offering won't include all of the content you can currently watch on the streaming service, Netflix executives said during the company's Q2 2022 earnings interview video.
"Today, the vast majority of what people watch on Netflix, we can include in the ad-supported tier," Netflix co-CEO Ted Sarandos said. "There are some things that don't — that we're in conversation about with the studios on — but if we launched the product today, the members in the ad tier would have a great experience. We will clear some additional content, but certainly not all of it, but we don't think it's a material holdback to the business."
"It's certainly a nice to have," said CFO Spencer Neumann. "But it's not a must-have. As Ted says, we can launch today without any additional content clearance rights. Hopefully we can supplement that, but we'll be disciplined in what we do."
We'll have to wait and see exactly what's missing from the ad-supported tier, which Netflix said Tuesday that it aims to launch early 2023. The upcoming tier wouldn't be very compelling if you couldn't watch Netflix hits like Stranger Things or Bridgerton, for example.
You can hear the interviewer's question and Sarandos and Neumann's responses in context from this timestamped link (or scrub to 18:55 in the interview video). The Wall Street Journal reported last week that Netflix was seeking to negotiate its deals with studios so that it could include their content on the tier with ads. Netflix will be partnering with Microsoft on the ad-supported tier.
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