S. D. Barthelmy (GSFC), H. A. Krimm (NSF),
S. Laha (GSFC/UMBC), A. Y. Lien (U Tampa),
C. B. Markwardt (GSFC), D. M. Palmer (LANL),
T. Parsotan (GSFC/UMBC), T. Sakamoto (AGU),
M. Stamatikos (OSU) (i.e. the Swift-BAT team):
Using the data set from T-240 to T+962 sec from the recent telemetry
we report further analysis of BAT GRB 221202A (trigger #1142997)
(Caputo et al. GCN Circ. 33005). The BAT ground-calculated position is
RA, Dec = 77.002, -59.836 deg which is
RA(J2000) = 05h 08m 00.5s
Dec(J2000) = -59d 50' 09.0"
with an uncertainty of 2.1 arcmin, (radius, sys+stat, 90% containment).
The partial coding was 85%.
The mask-weighted light curve shows a single peaked pulse.
T90 (15-350 keV) is 10.34 +- 1.21 sec (estimated error including
The time-averaged spectrum from T+1.03 to T+12.44 sec is best fit by a
power-law model. The power law index of the time-averaged spectrum is
1.64 +- 0.25. The fluence in the 15-150 keV band is 3.2 +- 0.6 x 10^-07
The 1-sec peak photon flux measured from T+3.31 sec in the 15-150 keV band
is 0.7 +- 0.2 ph/cm2/sec. All the quoted errors are at the 90% confidence
The results of the batgrbproduct analysis are available at