M. Stamatikos (OSU), S. D. Barthelmy (GSFC), A. D'Ai (INAF-IASFPA),
H. A. Krimm (NSF), S. Laha (GSFC/UMBC), A. Y. Lien (GSFC/UMBC),
C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU),
T. N. Ukwatta (LANL) (i.e. the Swift-BAT team):
Using the data set from T-60 to T+243 sec from the recent telemetry downlink,
we report further analysis of BAT GRB 191101A (trigger #932742)
(D'Ai, et al., GCN Circ. 26135). The BAT ground-calculated position is
RA, Dec = 251.845, 43.740 deg which is
RA(J2000) = 16h 47m 22.8s
Dec(J2000) = +43d 44' 24.5"
with an uncertainty of 1.7 arcmin, (radius, sys+stat, 90% containment).
The partial coding was 47%.
The mask-weighted light curve shows a single, rather weak pulse, extending from
~T-20 sec, peaking at T+0 sec, dropping sharply at T+25 sec, followed by low-level
extended emission out to ~T+140 sec. T90 (15-350 keV) is 137.95 +- 22.83 sec
(estimated error including systematics).
The time-averaged spectrum from T-20.97 to T+143.53 sec is best fit by a simple
power-law model. The power law index of the time-averaged spectrum is
1.78 +- 0.18. The fluence in the 15-150 keV band is 1.9 +- 0.2 x 10^-6 erg/cm2.
The 1-sec peak photon flux measured from T-1.00 sec in the 15-150 keV band
is 1.3 +- 0.3 ph/cm2/sec. All the quoted errors are at the 90% confidence
The results of the batgrbproduct analysis are available at