The first Swift BAT gamma-ray burst catalog

T. Sakamoto, S. D. Barthelmy, L. Barbier, J. R. Cummings, E. E. Fenimore, N. Gehrels, D. Hullinger, H. A. Krimm, C. B. Markwardt, D. M. Palmer, A. M. Parsons, G. Sato, M. Stamatikos, J. Tueller, T. N. Ukwatta, B. Zhang

研究成果: Article査読

135 被引用数 (Scopus)

抄録

We present the first Swift Burst Alert Telescope (BAT) catalog of gamma-ray bursts (GRBs), which contains bursts detected by the BAT between 2004 December 19 and 2007 June 16. This catalog (hereafter the BAT1 catalog) contains burst trigger time, location, 90% error radius, duration, fluence, peak flux, and time-averaged spectral parameters for each of 237 GRBs, as measured by the BAT. The BAT-determined position reported here is within 1.75′ of the Swift X-Ray Telescope (XRT)-determined position for 90% of these GRBs. The BAT T 90 and T50 durations peak at 80 and 20 s, respectively. From the fluence-fluence correlation, we conclude that about 60% of the observed peak energies, Epeak obs, of BAT GRBs could be less than 100 keV. We confirm that GRB fluence to hardness and GRB peak flux to hardness are correlated for BAT bursts in analogous ways to previous missions' results. The correlation between the photon index in a simple power-law model and E peak obs is also confirmed. We also report the current status for the on-orbit BAT calibrations based on observations of the Crab Nebula.

本文言語English
ページ(範囲)179-190
ページ数12
ジャーナルAstrophysical Journal, Supplement Series
175
1
DOI
出版ステータスPublished - 2008 3

ASJC Scopus subject areas

  • Space and Planetary Science

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