Back

GCN Circular 16573

Subject

GRB 140710A: Swift-BAT refined analysis

Date

2014-07-10T21:46:28Z (10 years ago)

From

Hans Krimm at NASA-GSFC <hans.krimm@nasa.gov>

T. Sakamoto (AGU), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC),
J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA),
A. Y. Lien (NASA/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL),
M. H. Siegel (PSU), M. Stamatikos (OSU), J. Tueller (GSFC),
T. N. Ukwatta (MSU) (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 140710 (trigger #603954)
(Siegel, et al., GCN Circ. 16563Loading...
 
 ).  The BAT ground-calculated position is
RA, Dec = 41.088, 35.499 deg which is
    RA(J2000)  =  02h 44m 21.0s
    Dec(J2000) = +35d 29' 54.8"
with an uncertainty of 1.8 arcmin, (radius, sys+stat, 90% containment).
The partial coding was 58%.

The mask-weighted light curve shows a single peak of duration ~4 seconds,
starting at T0. T90 (15-350 keV) is 3.52 +- 0.91 sec (estimated error including
systematics).

The time-averaged spectrum from T-0.23 to T+3.80 sec is best fit by a simple
power-law model.  The power law index of the time-averaged spectrum is
2.00 +- 0.23.  The fluence in the 15-150 keV band is 2.3 +- 0.3 x 10^-07 
erg/cm2. The 1-sec peak photon flux measured from T+0.04 sec in the 15-150 keV 
band is 1.9 +- 0.3 ph/cm2/sec.  All the quoted errors are at the 90% confidence
level.

The results of the batgrbproduct analysis are available at
http://gcn.gsfc.nasa.gov/notices_s/603954/BA/