UV/Optical Emission from the Expanding Envelopes of Type II Supernovae
UV/Optical Emission from the Expanding Envelopes of Type II Supernovae
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DOI：
10.3847/1538-4357/aa64df
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发表时间：
2016-07
期刊：
影响因子：
--
通讯作者：
N. Sapir;E. Waxman
中科院分区：
文献类型：
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作者：
N. Sapir;E. Waxman
超新星（SN）光变曲线的早期部分主要是从膨胀的激波加热的祖先包层中逃逸的辐射。对于多变的氢包层，发射辐射的性质用简单的解析表达式描述，并且几乎与多变指数n无关。这一解析描述在早期成立，t为0.7eV，t < 14（R/1013.5cm）为0.55天。标准多变包层在ttr/a处对L的抑制可能是双峰SN光变曲线的第一个光学峰的原因，对于Menv < 1 M λ，第一个峰出现在几天后。
The early part of a supernova (SN) light curve is dominated by radiation escaping from the expanding shock-heated progenitor envelope. For polytropic hydrogen envelopes, the properties of the emitted radiation are described by simple analytic expressions and are nearly independent of the polytropic index, n. This analytic description holds at early time, t 0.7 eV, t < 14(R/1013.5cm)0.55 days. The suppression of L at ttr/a that is obtained for standard polytropic envelopes may account for the first optical peak of double-peaked SN light curves, with the first peak at a few days for Menv < 1 M⊙.