TITLE:   GCN CIRCULAR
NUMBER:  7937
SUBJECT: GRB 080702B Swift-BAT refined analysis
DATE:    08/07/03 20:04:06 GMT
FROM:    Jay R. Cummings at NASA/GSFC/Swift  <jayc@milkyway.gsfc.nasa.gov>

C. Markwardt (GSFC/UMD), S. D. Barthelmy (GSFC),
W. Baumgartner (GSFC/UMBC),A. Copete (Harvard), J. Cummings (GSFC/UMBC),
E. Fenimore (LANL), N. Gehrels (GSFC), J. Grindlay (Harvard),
H. Krimm (GSFC/USRA),K. McLean (GSFC/UMD), D. Palmer (LANL),
T. Sakamoto (GSFC/UMBC), G. Sato (ISAS), M. Stamatikos (GSFC/ORAU),
J. Tueller (GSFC), T. Ukwatta (GWU)
On behalf of the Swift-BAT and BATSS teams:


Using the event data from T-83 to T+37 seconds, we present further
analysis of GRB 080702B.  The best-determined position in BAT was
RA, Dec 355.616,  -5.424 (J2000) or

RA = 23h 42m 27.8s
Dec = -05d 25' 26.4"

with an uncertainty of 3.5 arcmin (radius, sys+stat, 90% containment).
The partial coding was varying (the entire burst occurred during a
preplanned Swift slew manuever), but was approximately 60% during
the entire burst.

The mask-weighted light curve shows a single peak with a few
second rise, and slow decay.  T90 was 20 +- 3 seconds (estimated
error including systematics). 

The time-averaged spectrum from T-2 to T+21 seconds is best fit by a
simple power-law model.  The power law index of the time-averaged
spectrum is 1.44 � 0.13.  The fluence in the 15-150 keV band was
(5.0 � 0.9) x 10^-7 ergs/cm2/s.  The 1-sec peak photon flux measured
from T+4 sec in the 15-150 keV band was 0.5 +- 0.1 photons/cm2/s. 
All the quoted errors are at the 90% confidence level.