GCN Circular 14746
Subject
GRB 130603B: Swift-BAT Spectral lag analysis
Event
Date
2013-06-04T02:39:24Z (12 years ago)
From
Scott Barthelmy at NASA/GSFC <scott@lheamail.gsfc.nasa.gov>
J. Norris (BSU), N. Gehrels (GSFC), S. D. Barthelmy (GSFC), T. Sakamoto (AGU)
We report the spectral lag analysis for GRB 130603B (GCN Circ. 14735 & 14740)
based on the BAT data. Using 2-ms binned light curves, the spectral lag
for the 15-25 keV to 50-100 keV bands is 0.6 +-0.7 ms, and -2.5 +-0.7 mc
for the 25-50 keV to 100-350 keV bands for both peaks combined.
These lag values and the hard spectrum (GCN Circ. 14741) place
this burst in the short burst category. There is no evidence
for extended emission at the 0.005 cnts/det/sec level.