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arXiv 0905.0524astro-ph.HE
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雨燕时代伽马射线暴的光学分类

Optical Classification of Gamma-Ray Bursts in the Swift Era

A. J. van der Horst, C. Kouveliotou, N. Gehrels, E. Rol, R. A. M. J. Wijers, J. K. Cannizzo, J. Racusin, D. N. Burrows

摘要:

基于伽玛暴余辉的X射线和光-X射线光谱指数,并利用Swift的光谱特性,提出了一种新的光学暗伽马射线暴(GRB)分类方法。这种方法比以前的方法更少地依赖于模型假设,并且可以用作识别光学亚发光爆发的快速诊断工具。用这种方法,我们还可以发现在可见光波长处非常明亮的伽玛暴。我们表明,以前提出的光学暗度和X射线/伽马射线亮度之间的相关性仅仅是一个观测的选择效应。

英文摘要:

We propose a new method for the classification of optically dark gamma-ray bursts (GRBs), based on the X-ray and optical-to-X-ray spectral indices of GRB afterglows, and utilizing the spectral capabilities of Swift. This method depends less on model assumptions than previous methods, and can be used as a quick diagnostic tool to identify optically sub-luminous bursts. With this method we can also find GRBs that are extremely bright at optical wavelengths. We show that the previously suggested correlation between the optical darkness and the X-ray/gamma-ray brightness is merely an observational selection effect.

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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