Fryer 2007 伽玛暴回落盘产生超新星的光变曲线
主要内容:
认为回落盘激波产生的辐射比Ni的衰变产生的要强（一般认为超新星的光变是Ni的衰变产生的）。
精彩摘抄:
文章信息:
Light Curve Calculations of Supernovae from Fallback Gamma-Ray Bursts
(Submitted on 4 May 2007)
Abstract: The currently-favored model for long-duration gamma-ray bursts (GRBs) invokes explosions from the collapse of a massive star down to a black hole: either directly or through fallback. Those GRBs forming via fallback will produce much less radioactive nickel, and hence it has been argued (without any real calculation) that these systems produce dim supernovae. These fallback black-hole GRBs have been recently been argued as possible progenitors of a newly discovered set of GRBs lacking any associated supernovae. Here we present the first ever radiation-hydrodynamics calculations of the light-curves produced in the hypernova explosion by a delayed-fallback gamma-ray burst. We find that the bolometric light-curve is dominated by shock-deposited energy, not the decay of radioactive elements. As such, observations of such bursts actually probe the density in the progenitor wind more than it does the production of radioactive nickel.
Comments:
11 pages (including 3 figures), submitted to ApJ, comments welcome
Subjects:
Astrophysics (astro-ph)
Report number:
LA-UR-07-1376
Cite as:
arXiv:0705.0716v1 [astro-ph]
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