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Dong, S, Shappee, BJ, Prieto, JL, Jha, SW, Stanek, KZ, Holoien, TW-S, Kochanek, CS, Thompson, TA, Morrell, N, Thompson, IB, Basu, U, Beacom, JF, Bersier, D, Brimacombe, J, Brown, JS, Chen, P, Conseil, E, Danilet, AB, Falco, E, Grupe, D et al (2016) ASASSN-15lh: A highly super-luminous supernova. SCIENCE, 351 (6270). pp. 257-260. ISSN 0036-8075
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Abstract
We report the discovery and early evolution of ASASSN-15lh, the most luminous supernova ever found. At redshift z=0.2326, ASASSN-15lh reached an absolute magnitude of M_{u,AB} ~ -23.5 and bolometric luminosity L_bol ~ 2.2x10^45 ergs/s, which is >~ 2 times more luminous than any previously known supernova. Its spectra match the hydrogen-poor sub-class of super-luminous supernovae (SLSNe-I), whose energy sources and progenitors are poorly understood. In contrast to known SLSNe-I, most of which reside in star-forming, dwarf galaxies, its host appears to be a luminous galaxy (M_V ~ -22; M_K ~ -25.1) with little star formation. In the two months since its first detection, ASASSN-15lh has radiated ~7.5x10^51 ergs, challenging the popular magnetar model for the engine of SLSNe-I.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | astro-ph.HE; astro-ph.HE; astro-ph.SR |
| Subjects: | Q Science > QB Astronomy |
| Divisions: | Astrophysics Research Institute |
| Publisher: | American Association for the Advancement of Science |
| Related URLs: | |
| Date of acceptance: | 24 November 2015 |
| Date Deposited: | 10 Feb 2016 11:17 |
| Last Modified: | 23 Jun 2022 15:15 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/1684 |
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