Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 5749

GRB 061021, Swift-BAT Lag analysis
2006-10-23T20:10:07Z (18 years ago)
Scott Barthelmy at NASA/GSFC <>
GRB 061021, Swift-BAT Lag analysis
J. Norris (Stanford/SLAC) and S.D. Barthelmy (GSFC)
on behalf of the Swift-BAT team:
We have performed the lag analysis (Norris & Bonnell, ApJ, 2006)
on GRB 061021 (trigger 234905) (Moretti et al, GCN Circ 5743 &
Palmer et al, GCN Circ 5744) with the following results:
  72 ms +28-48 ms  between the  50-100 and 15-25 keV bands
  98 ms +30-32 ms  between the 100-350 and 25-50 keV bands
 128 ms +49-35 ms  between the 100-350 and 15-25 keV bands
(all with 16-ms binning).

We conclude that this is a Long Burst (and not a Short Burst
with Extended Emission).
Looking for U.S. government information and services? Visit