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

页码：491 / 498

页数：8

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