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Cosmic Gamma-Ray Bursts

机译:宇宙伽玛射线暴

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摘要

The results of the observation of cosmic gamma-ray bursts are discussed and available theoretical models are presented. Emphasis is placed on a cosmological model in which a gamma burst results from a powerful (approx 10~(51) - 10~(53) erg) and very short (approx 10-100 s) energy release which occurs in a compact (approx 10~6 - 10~7 cm) region and gives rise to a photonlepton fireball expanding at an ultrarelativistic velocity (Lorentz-factor #GAMMA# approx.> 100). The interaction of the relativistic shock wave with its environment produces the observed X-ray and optical afterglows of a burst. Possible physical models of such an energy release event are discussed and some related problems considered.
机译:讨论了宇宙伽马射线爆发的观测结果,并提出了可用的理论模型。重点放在宇宙学模型上,其中强力(约10〜(51)-10〜(53)erg)和非常短(约10-100 s)的能量释放会导致伽玛爆发,紧凑的能量释放10〜6-10〜7 cm)区域,并产生一个以超相对论速度膨胀的光子核火球(洛伦兹因子#GAMMA#大约> 100)。相对论冲击波与其环境的相互作用产生了观察到的X射线和爆发的光学余辉。讨论了这种能量释放事件的可能物理模型,并考虑了一些相关问题。

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