Pulse Brain · Growing Health Evidence Index
Peer-reviewed

Spectral properties of gamma-ray bursts observed by the Suzaku wide-band all-sky monitor

Norisuke Ohmori, K. Yamaoka, M. Yamauchi, Y. Urata, M. Ohno, Satoshi Sugita, K. Hurley, M. Tashiro, Y. Fukazawa, W. Iwakiri, Daisuke Katsukura, M. Kokubun, Kazuo Makishima, Souta Murakami, Y. E. Nakagawa, Kazuhiro Nakazawa, Katsuya Odaka, K. Takahashi, Tadayuki Takahashi, Y. Terada

Publications of the Astronomical Society of Japan · 2019

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Summary

Abstract We have systematically studied the spectral properties of 302 localized gamma-ray bursts (GRBs) observed by the Suzaku wide-band all-sky monitor (WAM) from 2005 August to 2010 December. The energy spectra in the 100–5000 keV range integrated over the entire emission and the 1 s peak were fitted by three models: a single power law, a power law with an exponential cutoff (CPL), and the GRB Band function (GRB). Most of the burst spectra were well fitted by a single power law. The average photon index α was −2.11 and −1.73 for long and short bursts, respectively. For the CPL and GRB models, the low-energy and high-energy photon indices (α and β) for the entire emission spectra were consistent with previous measurements. The averages of the α and β were −0.90 and −2.65 for long-duratio

Source type
Peer-reviewed study
DOI
10.1093/pasj/psz054
Catalogue ID
SNmoi8oa82-dr87o6
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