<p>This source, <a href="https://apod.nasa.gov/apod/ap190110.html" rel="nofollow noreferrer">https://apod.nasa.gov/apod/ap190110.html</a>, an astronomy Picture of the Day states that the Vela remnant &quot;is likely embedded in a larger and older supernova remnant, the Gum Nebula&quot;.</p>

CC BY-SA 4.0
2020-11-26T04:43:17.470Z
I didn't know that, thanks
user random numbers
CC BY-SA 4.0
2020-11-26T04:11:42.247Z
2020-11-26T04:11:42.247Z
Natsfan
<blockquote>
<p>The Vela Pulsar (PSR J0835-4510 or PSR B0833-45) is a radio, optical, X-ray- and gamma-emitting pulsar associated with the Vela Supernova Remnant in the constellation of Vela.</p>
</blockquote>
<p>First line of the Wikipedia entry on the Vela pulsar.</p>
<p>It's obviously much more spread out and diffuse than the Crab nebula because it occurred more than 10 times as long ago.</p>
<p>Here it is as an optical image, roughly 6 degrees across and almost entirely filled by the supernova remnant. (The arrow marks the position of the Vela pulsar, which is distinctly off-centre.)</p>
<p><a href="https://i.sstatic.net/sMslw.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/sMslw.jpg" alt="Vela supernova remnant" /></a></p>
<p>The first picture on the Wikipedia page is</p>
<p><a href="https://i.sstatic.net/b1R7i.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/b1R7i.jpg" alt="Vela PWN" /></a></p>
<p>which shows the pulsar wind nebula around the Vela pulsar. This again has an analogy with the Crab pulsar (and looks similar) and is due to the interaction of relativistic particles emitted by the pulsar with their surroundings and the strong magnetic fields. The picture is taken in X-rays and is only a few arcminutes across.</p>

CC BY-SA 4.0
2020-11-26T13:42:54.830Z
@TypeIA That's because it IS the cloud-shaped outline that fills almost the whole image !
ProfRob
CC BY-SA 4.0
2020-11-26T13:59:54.187Z
Thanks for that clarification and for adding the note about the arrow. It is clear now, even to this amateur :-)
TypeIA
CC BY-SA 4.0
2020-11-26T08:44:59.593Z
2020-11-26T13:53:58.910Z
2020-11-26T13:53:58.910Z
ProfRob
<p>The Vela pulsar is a neutron star from a supernova that exploded 10,000 years ago. It spins 11 times a second. The Crab Nebula along with the central Crab Pulsar formed 1000 years ago. This pulsar spins 30 times a second. If there's a famous Crab Pulsar with a nebula, is there a Vela Nebula in which the Vela Pulsar is within?</p>

CC BY-SA 4.0
2020-11-26T02:20:49.047Z
there's this pretty interesting looking thing, but experts will have to chime in on what is or isn't or can be or can't be considered an actual nebula  https://commons.wikimedia.org/wiki/File:Vela_Supernova_Remnant_by_Harel_Boren_(155256626).jpg
uhoh
CC BY-SA 4.0
2020-11-26T02:22:26.023Z
@uhoh So there's a Vela Supernova Remnant
user random numbers
CC BY-SA 4.0
2020-11-26T02:26:23.633Z
I didn't know until just now either! Unrelated factoid in HSM SE: [Who first reported the Crab pulsar's pulsing but was dismissed by an astronomer?](https://hsm.stackexchange.com/q/11298/3869)
uhoh
CC BY-SA 4.0
2020-11-26T02:28:50.120Z
@uhoh Why was the Crab's pulsing originally dismissed by astronomers?
user random numbers
CC BY-SA 4.0
2020-11-26T02:39:04.580Z
Have a look at the story described there, it's interesting...
uhoh
CC BY-SA 4.0
2020-11-26T02:40:31.747Z
@uhoh Ok, will do
user random numbers
<neutron-star><pulsar><nebula>
Is there a Vela Nebula?
user random numbers
# Is there a Vela Nebula?

(Asked by: username_0 on 2020-11-26)

The Vela pulsar is a neutron star from a supernova that exploded 10,000 years ago. It spins 11 times a second. The Crab Nebula along with the central Crab Pulsar formed 1000 years ago. This pulsar spins 30 times a second. If there's a famous Crab Pulsar with a nebula, is there a Vela Nebula in which the Vela Pulsar is within?

**Tags:** neutron-star, pulsar, nebula
> **Comments:**
> **username_1**: there's this pretty interesting looking thing, but experts will have to chime in on what is or isn't or can be or can't be considered an actual nebula  https://commons.wikimedia.org/wiki/File:Vela_Supernova_Remnant_by_Harel_Boren_(155256626).jpg  
> **username_0**: @uhoh So there's a Vela Supernova Remnant  
> **username_1**: I didn't know until just now either! Unrelated factoid in HSM SE: [Who first reported the Crab pulsar's pulsing but was dismissed by an astronomer?](https://hsm.stackexchange.com/q/11298/3869)  
> **username_0**: @uhoh Why was the Crab's pulsing originally dismissed by astronomers?  
> **username_1**: Have a look at the story described there, it's interesting...  
> **username_0**: @uhoh Ok, will do  

---

## 2 answers

### Answer by username_3 on 2020-11-26. Score: 7 | Accepted answer

> The Vela Pulsar (PSR J0835-4510 or PSR B0833-45) is a radio, optical, X-ray- and gamma-emitting pulsar associated with the Vela Supernova Remnant in the constellation of Vela.

First line of the Wikipedia entry on the Vela pulsar.

It's obviously much more spread out and diffuse than the Crab nebula because it occurred more than 10 times as long ago.

Here it is as an optical image, roughly 6 degrees across and almost entirely filled by the supernova remnant. (The arrow marks the position of the Vela pulsar, which is distinctly off-centre.)

[![Vela supernova remnant](https://i.sstatic.net/sMslw.jpg)](https://i.sstatic.net/sMslw.jpg)

The first picture on the Wikipedia page is

[![Vela PWN](https://i.sstatic.net/b1R7i.jpg)](https://i.sstatic.net/b1R7i.jpg)

which shows the pulsar wind nebula around the Vela pulsar. This again has an analogy with the Crab pulsar (and looks similar) and is due to the interaction of relativistic particles emitted by the pulsar with their surroundings and the strong magnetic fields. The picture is taken in X-rays and is only a few arcminutes across.

> **Comments:**
> **username_3**: @TypeIA That's because it IS the cloud-shaped outline that fills almost the whole image !  
> **username_4**: Thanks for that clarification and for adding the note about the arrow. It is clear now, even to this amateur :-)  

---

### Answer by username_2 on 2020-11-26. Score: 4

This source, <https://apod.nasa.gov/apod/ap190110.html>, an astronomy Picture of the Day states that the Vela remnant "is likely embedded in a larger and older supernova remnant, the Gum Nebula".

> **Comments:**
> **username_0**: I didn't know that, thanks  

---

