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GCN Circular 15016

Subject

GRB 130719A, Swift-BAT refined analysis

Date

2013-07-22T11:24:38Z (11 years ago)

From

Jay R. Cummings at NASA/GSFC/Swift <james.r.cummings@nasa.gov>

M. Stamatikos (OSU), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC),
J. R. Cummings (GSFC/UMBC),E. E. Fenimore (LANL), N. Gehrels (GSFC),
H. A. Krimm (GSFC/USRA), A. Y. Lien (NASA/GSFC/ORAU), C. B. Markwardt (GSFC),
F. E. Marshall (NASA/GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU),
G. Sato (ISAS), 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 130719A (trigger #562625) (Marshall,
et al., GCN Circ. 15012Not found
 
 
).  The BAT ground-calculated position is
RA, Dec = 89.038, -11.591 deg which is
    RA(J2000)  =  05h 56m 09.2s
    Dec(J2000) = -11d 35' 29.0"
with an uncertainty of 1.9 arcmin, (radius, sys+stat, 90% containment).
The partial coding was 50%.
  
The mask-weighted light curve shows a single weak approximately FRED peak.
T90 (15-350 keV) is 177.7 +- 20.5 sec (estimated error including systematics).
  
The time-averaged spectrum from T+6.2 to T+205.2 sec is best fit by a simple
power-law model.  The power law index of the time-averaged spectrum is
1.63 +- 0.17.  The fluence in the 15-150 keV band is 2.3 +- 0.2 x 10^-06 erg/cm2.
The 1-sec peak photon flux measured from T+82.68 sec in the 15-150 keV band
is 0.6 +- 0.2 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/562625/BA/