What is Micronova?
[[File:Artist’s impression of a micronova.jpg|thumb|Artist's impression of a micronova]] A '''micronova''' is a type of [[explosion]] on the surface of a [[star]] with about one millionth the strength of a (classical) [[nova]]. It was first observed in April 2022 and is caused by accumulation of material onto the star from its environment.<ref>{{Cite web|work=[[European Southern Observatory|ESO]]|title=Astronomers discover micronovae, a new kind of stellar explosion|date=20 April 2022|url=https://www.eso.org/public/unitedkingdom/news/eso2207/}}</ref><ref>{{cite journal|author1=S. Scaringi |author2=P.J. Groot |author3=C.Knigge |author4=J.-P. Lasota |author5=D. de Martino |author6=Y. Cavecchi |author7=D.A.H. Buckley |author8=M.E. Camisassa |arxiv=2204.09073 |title=Triggering micronovae through magnetically confined accretion flows in accreting white dwarfs |journal=Monthly Notices of the Royal Astronomical Society: Letters |date=2022-04-19|volume=514 |pages=L11–L15 |doi=10.1093/mnrasl/slac042 }}</ref><ref>{{cite journal|author1=S. Scaringi |author2=P. J. Groot |author3=C. Knigge |author4=A. J. Bird |author5=E. Breedt |author6=D. A. H. Buckley |author7=Y. Cavecchi |author8=N. D. Degenaar |author9=D. de Martino |author10=C. Done |author11=M. Fratta |author12=K. Iłkiewicz |author13=E. Koerding |author14=J.-P. Lasota |author15=C. Littlefield |author16=C. F. Manara |author17=M. O’Brien |author18=P. Szkody |author19=F. X. Timmes |journal=[[Nature (journal)|Nature]]|title=Localized thermonuclear bursts from accreting magnetic white dwarfs|date=2022-04-20|volume=604|issue=7906 |pages=447–450|issn=1476-4687|doi=10.1038/s41586-022-04495-6|pmid=35444319 |url=https://doi.org/10.1038/s41586-022-04495-6|arxiv=2204.09070|s2cid=248266728 }}</ref><ref>{{Cite web |first=Jennifer |last=Ouellette |url=https://arstechnica.com/science/2022/04/meet-the-micronova-astronomers-discovered-new-type-of-stellar-explosion/|title = Meet the micronova: Astronomers discovered new type of stellar explosion|work=[[Ars Technica]]|date = 20 April 2022