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arXiv 1008.4541astro-ph.HE
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GRB瞬发辐射与环爆介质相互作用的模拟

Modeling of the Interaction of GRB Prompt Emission with the Circumburst Medium

D. A. Badjin, S. I. Blinnikov, K. A. Postnov

摘要:

我们提出的方法和结果的数值模拟的相互作用的伽玛暴即时发射与环暴介质使用修改后的版本的多组辐射水文代码STELLA。修正包括非稳态光电离、光电离加热和康普顿加热以及流体力学和辐射传输。光变曲线和光谱的出射的伽马射线,X射线和光发射计算的一组模型(壳)的环暴环境,不同的尺寸,密度,密度分布,成分,温度。在某些情况下,总的辐射热光度和光学光度可以分别达到10^47和10^43 erg/s。这些效应可能是造成某些伽玛射线暴X射线光变曲线和光学余辉不规则的原因。

英文摘要:

We present methodology and results of numerical modeling of the interaction of GRB prompt emission with the circumburst medium using a modified version of the multi-group radiation hydrocode STELLA. The modification includes the nonstationary photoionization, the photoionization heating and the Compton heating along with the hydrodynamics and radiation transfer. The lightcurves and spectra of the outcoming gamma-ray, X-ray and optical emission are calculated for a set of models (shells) of the circumburst environment, which differ in dimensions, density, density profile, composition, temperature. In some cases total bolometric and optical luminosities can reach 10^47 and 10^43 erg/s respectively. These effects can be responsible for irregularities which are seen on lightcurves of some GRB's X-ray and optical afterglows.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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