ASASSN-15lh: A highly super-luminous supernova

作者：Dong, Subo^*; Shappee, B. J.; Prieto, J. L.; Jha, S. W.; Stanek, K. Z.; Holoien, T. W. -S.; Kochanek, C. S.; Thompson, T. A.; Morrell, N.; Thompson, I. B.; Basu, U.; Beacom, J. F.; Bersier, D.; Brimacombe, J.; Brown, J. S.; Bufano, F.; Chen, Ping; Conseil, E.; Danilet, A. B.; Falco, E.; Grupe, D.; Kiyota, S.; Masi, G.; Nicholls, B.; Olivares, F. E.; Pignata, G.; Pojmanski, G.; Simonian, G. V.; Szczygiel, D. M.; Wozniak, P. R.

来源：Science, 2016, 351(6270): 257-260.

DOI：10.1126/science.aac9613

• GAMMA-RAY BURSTS
• SUPERLUMINOUS SUPERNOVAE
• IC SUPERNOVAE
• LIGHT CURVES
• GALAXY
• REDSHIFT
• MAGNETAR

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 M-u,M-AB = -23.5 +/- 0.1 and bolometric luminosity L-bol = (2.2 +/- 0.2) x 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 (M-K approximate to -25.5) with little star formation. In the 4 months since first detection, ASASSN-15lh radiated (1.1 +/- 0.2) x 10(52) ergs, challenging the magnetar model for its engine.

• 出版日期2016-1-15
• 单位北京大学; rutgers; Los Alamos