Predicting Spectral Parameters in the Backscattering-dominated Model for the Prompt Phase of GRBs

被引：6

作者：

Vyas, Mukesh K. ^{[1
]}

Peer, Asaf ^{[1
]}

Eichler, David ^{[2
]}

机构：

[1] Bar Ilan Univ, IL-5290002 Ramat Gan, Israel

[2] Ben Gurion Univ Negev, IL-84105 Beer Sheva, Israel

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2021年 / 918卷 / 01期

基金：

以色列科学基金会;

关键词：

GAMMA-RAY BURSTS; RELATIVISTIC JETS; EMISSION MODEL; SCATTERING; ERUPTION; CATALOG;

D O I：

10.3847/2041-8213/ac1d56

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present new results of the backscattering-dominated prompt emission model in which the photons generated through pair annihilation at the center of a gamma-ray burst (GRB) are backscattered through Compton scattering by an outflowing stellar cork. Using a Comptonized pair annihilation spectrum accompanied by bremsstrahlung radiation for seed photons, we show that the obtained spectra produce a low-energy photon index in the range alpha similar to -1.95 to -1.1, steeper high-energy slopes beta similar to -3.5 to -2.4, and spectral peak energies approximately a few KeV to a few tens of MeV. These findings are consistent with the values covered in GRB prompt phase observations.

引用

页数：6

共 37 条

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