Pulse Brain · Growing Health Evidence Index
Tier 3 — Observational / field trialPeer-reviewed

Suzaku Wide-band All-sky Monitor measurements of duration distributions of gamma-ray bursts

Norisuke Ohmori, K. Yamaoka, M. Ohno, Satoshi Sugita, R. Kinoshita, Yusuke Nishioka, K. Hurley, Yoshitaka Hanabata, M. Tashiro, J. Enomoto, T. Fujinuma, Yasushi Fukazawa, W. Iwakiri, Takafumi Kawano, M. Kokubun, Kazuo Makishima, S. Matsuoka, T. Nagayoshi, Y. E. Nakagawa, S. Nakaya, Kazuhiro Nakazawa, Tadayuki Takahashi, S. Takeda, Y. Terada, Y. Urata, Seiya Yabe, T. Yasuda, M. Yamauchi

Publications of the Astronomical Society of Japan · 2016

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Summary

This paper reports analysis of gamma-ray burst duration characteristics using 1464 events detected by the Suzaku Wide-band All-sky Monitor between 2005 and 2010. The study demonstrates bimodal duration distributions across lower energy ranges and reveals energy-dependent duration patterns, with clear separation between short-hard and long-soft GRBs. Comparison with eight other GRB instruments identified significant differences in short:long event ratios, particularly between WAM/BATSE and Swift/BAT, attributable to energy-dependent detection sensitivities and trigger characteristics.

UK applicability

This astrophysics research on gamma-ray burst properties has no direct application to UK farming systems, soil health, nutrient density or human nutrition outcomes. It falls entirely outside the scope of Vitagri's Pulse Brain.

Key measures

T90 and T50 duration distributions; spectral hardness; short:long event ratios; power-law index of duration versus energy (−0.058); duration distributions across energy ranges 50–120, 120–250, 250–550, and 550–5000 keV

Outcomes reported

The study analysed T90 and T50 duration distributions of 1464 gamma-ray bursts observed by the Suzaku WAM instrument and their relationships with spectral hardness across multiple energy ranges. The analysis revealed bimodal duration distributions and compared findings with eight other GRB detection instruments.

Theme
General food systems / other
Subject
Other / interdisciplinary
Study type
Research
Study design
Observational data analysis
Source type
Peer-reviewed study
Status
Published
System type
Other
DOI
10.1093/pasj/psw009
Catalogue ID
BFmohg5fgd-rz5nvz

Topic tags

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