OBSERVATIONS OF THE PROMPT GAMMA-RAY EMISSION OF GRB 070125

被引:15
|
作者
Bellm, Eric C. [1 ]
Hurley, Kevin [1 ]
Pal'shin, Valentin [2 ]
Yamaoka, Kazutaka [3 ]
Bandstra, Mark S. [1 ]
Boggs, Steven E. [1 ,4 ]
Hong, Soojing [5 ]
Kodaka, Natsuki [6 ]
Kozyrev, A. S. [7 ]
Litvak, M. L. [7 ]
Mitrofanov, I. G. [7 ]
Nakagawa, Yujin E. [8 ]
Ohno, Masanori [9 ]
Onda, Kaori [6 ]
Sanin, A. B. [7 ]
Sugita, Satoshi [3 ]
Tashiro, Makoto [6 ]
Tretyakov, V. I. [7 ]
Urata, Yuji [6 ]
Wigger, Claudia [10 ]
机构
[1] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA
[2] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
[3] Aoyama Gakuin Univ, Dept Math Phys, Kanagawa 2298558, Japan
[4] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[5] Nihon Univ, Coll Sci & Technol, Phys Lab, Funabashi, Chiba 2748501, Japan
[6] Saitama Univ, Dept Phys, Sakura Ku, Saitama 3388570, Japan
[7] Moscow Space Res Inst, Moscow 117997, Russia
[8] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan
[9] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan
[10] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
来源
ASTROPHYSICAL JOURNAL | 2008年 / 688卷 / 01期
关键词
gamma rays: bursts;
D O I
10.1086/592136
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
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'' E-peak,(i)-E-iso correlation. Assuming a jet opening angle derived from broadband modeling of the burst afterglow, GRB 070125 is a significant outlier to the "Ghirlanda'' E-peak,(i)-E-gamma correlation. Its collimation-corrected energy release, E-gamma = 2.5 x 10(52) ergs, is the largest yet observed.
引用
收藏
页码:491 / 498
页数:8
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