| Literature DB >> 26816375 |
Subo Dong1, B J Shappee2, J L Prieto3, S W Jha4, K Z Stanek5, T W-S Holoien5, C S Kochanek5, T A Thompson5, N Morrell6, I B Thompson2, U Basu7, J F Beacom8, D Bersier9, J Brimacombe10, J S Brown7, F Bufano11, Ping Chen12, E Conseil13, A B Danilet7, E Falco14, D Grupe15, S Kiyota16, G Masi17, B Nicholls18, F Olivares E19, G Pignata19, G Pojmanski20, G V Simonian7, D M Szczygiel20, P R Woźniak21.
Abstract
We report the discovery of ASASSN-15lh (SN 2015L), which we interpret as the most luminous supernova yet found. At redshift z = 0.2326, ASASSN-15lh reached an absolute magnitude of Mu ,AB = -23.5 ± 0.1 and bolometric luminosity Lbol = (2.2 ± 0.2) × 10(45) ergs s(-1), which is more than twice as luminous as any previously known supernova. It has several major features characteristic of the hydrogen-poor super-luminous supernovae (SLSNe-I), whose energy sources and progenitors are currently poorly understood. In contrast to most previously known SLSNe-I that reside in star-forming dwarf galaxies, ASASSN-15lh appears to be hosted by a luminous galaxy (MK ≈ -25.5) with little star formation. In the 4 months since first detection, ASASSN-15lh radiated (1.1 ± 0.2) × 10(52) ergs, challenging the magnetar model for its engine.Entities:
Year: 2016 PMID： 26816375 DOI： 10.1126/science.aac9613
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728