Observations of the Prompt Gamma-Ray Emission of GRB 070125
Eric C. Bellm, Kevin Hurley, Valentin Pal'shin, Kazutaka Yamaoka, Mark, S. Bandstra, Steven E. Boggs, Soojing Hong, Natsuki Kodaka, A. S. Kozyrev, M., L. Litvak, I. G. Mitrofanov, Yujin E. Nakagawa, Masanori Ohno, Kaori Onda, A., B. Sanin, Satoshi Sugita, Makoto Tashiro

TL;DR
This paper presents detailed observations and spectral analysis of GRB 070125, highlighting its unique energetic properties and its position relative to established gamma-ray burst correlations.
Contribution
It provides comprehensive multi-instrument observations and spectral fits of GRB 070125, revealing its exceptional energy release and its status as an outlier to certain gamma-ray burst correlations.
Findings
GRB 070125 has the largest collimation-corrected energy release observed.
The burst is consistent with the Amati correlation but outlier to the Ghirlanda correlation.
It exhibits moderate hard-to-soft spectral evolution over about one minute.
Abstract
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 \textit{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 multi-peaked emission over a period of about one minute. The total burst fluence as observed by Konus is erg/cm (20 keV--10 MeV). Using the spectroscopic redshift , we find that the burst is consistent with the ``Amati'' correlation. Assuming a jet opening angle derived from broadband modeling of the burst afterglow, GRB 070125 is a significant outlier to the ``Ghirlanda'' correlation. Its collimation-corrected energy release ergs is the…
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