[vsnet-grb-info 10520] GRB 110420B: Spectral lag indicates short hard burst
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Thu Apr 21 22:39:05 JST 2011
TITLE: GCN CIRCULAR
NUMBER: 11950
SUBJECT: GRB 110420B: Spectral lag indicates short hard burst
DATE: 11/04/21 13:39:01 GMT
FROM: Scott Barthelmy at NASA/GSFC <scott at lheamail.gsfc.nasa.gov>
S.D. Barthelmy (GSFC) and J. Norris (BSU)
report:
For GRB 110420B (Trigger 451794, GCNs 11944 & 11946),
the spectral lag analysis of the Swift-BAT data for 40 msec
covering the spike, yields a lag of 0.6 +/-2.0 msec for the
25-50 to 100-300 keV bands and 2.4 +4/-2 msec for the
15-25 to 50-100 keV bands, both using a lightcurve binning of 2 msec.
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