Tail emission of prompt gamma-ray burst jets
Tail emission of prompt gamma-ray burst jets
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DOI：
10.1111/j.1365-2966.2006.10290.x
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发表时间：
2005-09
期刊：
影响因子：
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通讯作者：
R. Yamazaki;K. Toma;K. Ioka;Takashi Nakamura Kyoto University;Hiroshima University;K. University
中科院分区：
文献类型：
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作者：
R. Yamazaki;K. Toma;K. Ioka;Takashi Nakamura Kyoto University;Hiroshima University;K. University
本文用多重发射子壳层模型讨论了瞬发伽玛暴的尾发射，该模型能再现观测到的近似单调衰变。尾的整体衰变斜率受局部角不均匀性的影响不大，但受整体次壳层能量分布的影响。在某些事件中出现的陡峭的伽玛暴尾破裂倾向于结构喷流。如果发射子壳层的角尺寸在0.01- 0.02rad之间，则在长伽玛暴中经常观察到的尾发射中会出现一些起伏或波动。
Tail emission of the prompt Gamma-Ray Burst (GRB) is discussed using a multiple emitting sub-shell model which can reproduce the observed roughly monotonic decay. The global decay slope of the tail is not so much affected by the local angular inhomogeneity but affected by the global sub-shell energy distribution. The fact that steepening GRB tail breaks appeared in some events prefers the structured jets. If the angular size of the emitting sub-shell is around 0.01-0.02 rad, some bumps or fluctuations appear in the tail emission observed frequently in long GRBs.