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GCN Circular 11950

Subject
GRB 110420B: Spectral lag indicates short hard burst
Date
2011-04-21T13:39:01Z (13 years ago)
From
Scott Barthelmy at NASA/GSFC <scott@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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