Observations of the Prompt Gamma-Ray Emission of GRB 070125
Observations of the Prompt Gamma-Ray Emission of GRB 070125
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DOI：
10.1086/592136
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发表时间：
2007-10
期刊：
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通讯作者：
E. Bellm;K. Hurley;V. Pal'shin;K. Yamaoka;M. Bandstra;Steven E. Boggs;Steven E. Boggs;Soojing Hong;N. Kodaka;A. Kozyrev;M. Litvak;I. Mitrofanov;Y. Nakagawa;M. Ohno;K. Onda;A. Sanin;S. Sugita;M. Tashiro;V. Tretyakov;Y. Urata;C. Wigger
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文献类型：
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作者：
E. Bellm;K. Hurley;V. Pal'shin;K. Yamaoka;M. Bandstra;Steven E. Boggs;Steven E. Boggs;Soojing Hong;N. Kodaka;A. Kozyrev;M. Litvak;I. Mitrofanov;Y. Nakagawa;M. Ohno;K. Onda;A. Sanin;S. Sugita;M. Tashiro;V. Tretyakov;Y. Urata;C. Wigger
长而明亮的伽马射线暴GRB 070125被行星际网络定位。我们提出了由Konus-Wind，RHESSI，Suzaku WAM和Swift BAT观察到的瞬发γ射线发射的光变曲线。我们详细介绍了Konus和RHESSI数据的联合谱拟合结果。爆发显示出温和的硬到软的演变，在其多峰发射超过一段时间约1分钟。Konus观测到的总爆发通量为1.79 × 10 - 4 ergs cm-2（20 keV-10 MeV）。使用光谱红移z = 1.548，我们发现爆发与“Amati”Epeak，i-Eiso相关性一致。假设喷流张开角是从爆发余辉的宽带模型中得出的，GRB 070125是“Ghirlanda”Epeak，i-E γ相关性的一个显著异常值。它的能量释放经准直校正后，Eγ = 2.5 × 1052尔格，是迄今为止观测到的最大的。
The long, bright gamma-ray burst GRB 070125 was localized by the Interplanetary Network. We present light curves of the prompt gamma-ray emission as observed by Konus-Wind, RHESSI, Suzaku WAM, and Swift BAT. We detail the results of joint spectral fits with Konus and RHESSI data. The burst shows moderate hard-to-soft evolution in its multipeaked emission over a period of about 1 minute. The total burst fluence as observed by Konus is 1.79 × 10−4 ergs cm−2 (20 keV-10 MeV). Using the spectroscopic redshift z = 1.548, we find that the burst is consistent with the “Amati” Epeak,i − Eiso correlation. Assuming a jet opening angle derived from broadband modeling of the burst afterglow, GRB 070125 is a significant outlier to the “Ghirlanda” Epeak,i − Eγ correlation. Its collimation-corrected energy release, Eγ = 2.5 × 1052 ergs, is the largest yet observed.