ASASSN-15lh

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ASASSN-15lh is a supernova detected on 14 June 2015. It is the most luminous supernova ever detected.[1] At its brightest it was 50 times brighter than the whole Milky Way.[2][3]

"The exploding star was first observed back in June last year but is still radiating vast amounts of energy.
At its peak, the event was 200 times more powerful than a typical supernova, making it shine with 570 billion times the brightness of our Sun.
Researchers think the explosion and ongoing activity have been boosted by a very dense, highly magnetised, remnant object called a magnetar.
This object, created as the supernova got going, is probably no bigger than a major city, such as London, and is likely spinning at a fantastic rate - perhaps a thousand times a second".[1]

The supernova is some 3.8 billion light-years from Earth. It was found by the All Sky Automated Survey for SuperNovae (ASAS-SN).[1]

References[change | change source]

  1. 1.0 1.1 1.2 Amos, Jonathan 2016. Colossal star explosion detected. BBC News Science & Environment. [1]
  2. Carnegie Institution for Science (2014). "Most-luminous supernova ever discovered". phys.org. Retrieved 15 January 2016.
  3. Dong S; Shappee B.J. & Prieto J.L. et al 2016. "ASASSN-15lh: A highly super-luminous supernova". Science. 351 (6270): 257–260. doi:10.1126/science.aac9613.CS1 maint: multiple names: authors list (link)