S. D. Barthelmy (GSFC), T. Sakamoto (GSFC/UMBC), S. T. Holland (CRESST/USRA/GSFC)
(for the Swift-BAT team):
The full data set for this burst has been downlinked.
Using the data set from T-239 to T+963 sec, we report final analysis
of BAT GRB 100413A (trigger #419404) (Holland, et al, GCN Circ 10581
and Stamatikos, GCN Circ 10585). The BAT ground-calculated position is
RA, Dec = 266.223, 15.835 deg, which is
RA(J2000) = 17h 44m 53.6s
Dec(J2000) = +15d 50' 04.6"
with an uncertainty of 1.5 arcmin, (radius, sys+stat, 90% containment).
The partial coding was 48%.
The mask-weighted light curve shows multiple overlapping peaks in two main
clusters of peaks. It starts at ~T-45 sec, with the first cluster ending
at ~T+40 sec. The second cluster starts around T+90 sec, peaks around T+100 sec,
and ends at ~T+250 sec. The emission does not return to background
between the two clusters. T90 (15-350 keV) is 191 +- 14 sec
(estimated error including systematics).
The time-averaged spectrum from T-3.4 to T+227.4 sec is best fit by a simple
power-law model. The power law index of the time-averaged spectrum is
1.25 +- 0.07. The fluence in the 15-150 keV band is 6.2 +- 0.2 x 10^-6 erg/cm2.
The 1-sec peak photon flux measured from T+116.78 sec in the 15-150 keV band
is 0.7 +- 0.1 ph/cm2/sec. All the quoted errors are at the 90% confidence
The results of the batgrbproduct analysis are available at