TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  2962
SUBJECT: GRB050117a:  Refined analysis
DATE:    05/01/18 23:38:44 GMT
FROM:    Scott Barthelmy at NASA/GSFC  <Scott@lheamail.gsfc.nasa.gov>

S. Barthelmy, L. Barbier (GSFC), J. Cummings (GSFC), E. Fenimore (LANL),
N. Gehrels (GSFC), D. Hullinger (GSFC/UMD), H. Krimm (GSFC/USRA),
C. Markwardt (GSFC/UMD), K. McLean (LANL), D. Palmer (LANL), A. Parsons (GSFC),
T. Sakamoto (GSFC), G. Sato (ISAS), P. Schady (MSSL), M. Suzuki (Saitama),
J. Tueller (GSFC)  on behalf of the Swift-BAT team:

Further analysis of Swift-BAT GRB050117a (Sakamoto et al., GCN Circ 2952)
yields the fluence to be 7x10^-6 erg/cm2 in the 15-350 keV band and a
peak flux of 0.88 +/- 0.06 ph/cm2/sec (also 15-350 keV) in a 5-sec wide
window bracketing the highest peak (starting at T+85 sec) in the multi-peak
lightcurve.  We note that the ~200-sec duration quoted in Circ 2952
was an eye-ball fit for the the total duration.  The proper T90 time
is 169 sec (15-350 keV).