Velocity variation of internal shock waves in gamma ray bursts: Observational properties

Velocity variation of internal shock waves in gamma ray bursts: Observational properties

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摘要 The work uses the data in the TTS mode of BATSE to analyze the time lags and pulse widths of GRB960113 and GRB960722 in high as well as low energy bands. The results show that their time lags increase monotonously. This phenomenon can reasonably be interpreted with the model of internal shock waves of γ-ray bursts (GRB). Perhaps we obtain the direct observational evidence for the fireball model of GRBs for the first time. The work uses the data in the TTS mode of BATSE to analyze the time lags and pulse widths of GRB960113 and GRB960722 in high as well as low energy bands. The results show that their time lags increase monotonously. This phenomenon can reasonably be interpreted with the model of internal shock waves of γ-ray bursts (GRB). Perhaps we obtain the direct observational evidence for the fireball model of GRBs for the first time.

作者 Poon Helen

机构地区 Astronomy Department

出处《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2006年第4期505-512,共8页 中国科学：物理学、力学、天文学（英文版）

基金 This work was supported by the National Natural Science Foundation of China (Grant No. 10273010) the State Basic Research Projects of China (Grant No. TG20000776) the Specialized Research Fund for the Doctoral Program of Higher Education (Grant No. 20020027014).

关键词 GRB TIME lag shock wave. GRB, time lag, shock wave.

分类号 P159 [天文地球—天文学]

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Velocity variation of internal shock waves in gamma ray bursts: Observational properties

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