Observations of the Prompt Gamma-Ray Emission of GRB 070125

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 mod...

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Published in:The Astrophysical journal 2008-11, Vol.688 (1), p.491-498
Main Authors: Bellm, Eric C, Hurley, Kevin, Pal’shin, Valentin, Yamaoka, Kazutaka, Bandstra, Mark S, Boggs, Steven E, Hong, Soojing, Kodaka, Natsuki, Kozyrev, A. S, Litvak, M. L, Mitrofanov, I. G, Nakagawa, Yujin E, Ohno, Masanori, Onda, Kaori, Sanin, A. B, Sugita, Satoshi, Tashiro, Makoto, Tretyakov, V. I, Urata, Yuji, Wigger, Claudia
Format: Article
Language:English
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Summary: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 [image] ergs cm super(-2) (20 keV-10 MeV). Using the spectroscopic redshift [image], we find that the burst is consistent with the 'Amati' [image] correlation. Assuming a jet opening angle derived from broadband modeling of the burst afterglow, GRB 070125 is a significant outlier to the 'Ghirlanda' [image] correlation. Its collimation-corrected energy release, [image] ergs, is the largest yet observed.
ISSN:0004-637X
1538-4357
DOI:10.1086/592136