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The First Swift BAT Gamma-Ray Burst CatalogWe 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 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(sub 90) and T(sub 50) durations peak at 80 and 20 seconds, respectively. From the fluence-fluence correlation, we conclude that about 60% of the observed peak energies, E(sup obs)(sub peak) 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(sup obs)(sub peak) is also confirmed. We also report the current status for the on-orbit BAT calibrations based on observations of the Crab Nebula.
Document ID
20080031423
Acquisition Source
Goddard Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Sakamoto, T. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Barthelmy, S. D. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Barbier, L. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Cummings, J. R. (Maryland Univ. Baltimore County Baltimore, MD, United States)
Fenimore, E. E. (Los Alamos National Lab. NM, United States)
Gehrels, N. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hullinger, D. (MOXTEK, Inc. Orem, UT, United States)
Krimm, H. A. (Universities Space Research Association Columbia, MD, United States)
Markwardt, C. B. (Maryland Univ. College Park, MD, United States)
Palmer, D. M. (Los Alamos National Lab. NM, United States)
Parsons, A. M. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Sato, G. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Stamatikos, M. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Tueller, J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Ukwatta, T. N. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Zhang, B. (Nevada Univ. Las Vegas, NV, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2007
Subject Category
Astronomy
Funding Number(s)
CONTRACT_GRANT: NNG06GEO90A
Distribution Limits
Public
Copyright
Public Use Permitted.

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