TITLE:   GCN CIRCULAR
NUMBER:  41082
SUBJECT: GRB 250702F: Swift-BAT refined analysis
DATE:    25/07/13 21:00:20 GMT
FROM:    Takanori Sakamoto at AGU <tsakamoto@phys.aoyama.ac.jp>

M. J. Moss (GSFC), S. D. Barthelmy (GSFC), R. Gupta (GSFC),
N. J. Klingler (GSFC/UMBC/CRESSTII) H. A. Krimm (NSF), S. Laha (GSFC/UMBC),
A. Y. Lien (U Tampa), C. B. Markwardt (GSFC), D. M. Palmer (LANL),
T. Parsotan (GSFC), D. Sadaula (GSFC/UMBC), T. Sakamoto (AGU)
(i.e. the Swift-BAT team):

Using the data set from T-239 to T+963 sec from the recent telemetry downlink,
we report further analysis of BAT GRB 250702F (trigger #1329888)
(Klingler, et al., GCN Circ. 40894).  The BAT ground-calculated position is
RA, Dec = 212.942, 16.739 deg which is
   RA(J2000)  =  14h 11m 46.1s
   Dec(J2000) = +16d 44' 20.6"
with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment).
The partial coding was 81%.

The mask-weighted light curve shows a complex structure that starts at
~T-3 s, peaks at ~T+38 s, and ends at ~T+80 s.
T90 (15-350 keV) is 63.7 +- 12.5 sec (estimated error including systematics).

The time-averaged spectrum from T-29.13 to T+76.44 sec is best fit by a simple
power-law model.  The power law index of the time-averaged spectrum is
1.49 +- 0.06.  The fluence in the 15-150 keV band is 4.8 +- 0.2 x 10^-6 erg/cm2.
The 1-sec peak photon flux measured from T+37.35 sec in the 15-150 keV band
is 5.1 +- 0.3 ph/cm2/sec.  All the quoted errors are at the 90% confidence
level.

The results of the batgrbproduct analysis are available at
https://swift.gsfc.nasa.gov/results/batgrbcat/BAT_refined_circular/1329888