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GCN Circular 3119

Subject
GRB 050319: Swift-BAT refined analysis
Date
2005-03-19T16:18:59Z (19 years ago)
From
Hans Krimm at NASA-GSFC <krimm@milkyway.gsfc.nasa.gov>
H. Krimm (GSFC/USRA), T. Sakamoto (GSFC/NRC), S. Barthelmy,
L. Barbier (GSFC), J. Cummings (GSFC/NRC), E. Fenimore (LANL),
N. Gehrels (GSFC), D. Hullinger (GSFC/UMD), C. Markwardt (GSFC/UMD),
F. Marshall (GSFC), J. Nousek (PSU), D. Palmer (LANL), A. Parsons (GSFC),
G. Sato (ISAS), M. Still (GSFC/USRA), M. Suzuki (Saitama),  J. Tueller (GSFC)
on behalf of the Swift-BAT team:

Analysis of the full data set for the Swift-BAT GRB 050319  (Krimm,
et al., GCN 3117) yields a fluence of 8 X 10^-7 erg/cm2 in the 15-350 keV
band and a peak flux of 1.7 ph/cm2/sec  (also 15-350 keV).  The photon index
of the 1-s peak spectrum ( starting at T0 +0.36 sec.) is 2.1 +- 0.3
(90% confidence).  The time-averaged spectrum yields a photon index of
2.2 +- 0.2.

The overall measures of burst duration give T90 = 10 +- 2 seconds (including
systematics).
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