GCN Circular 1148
Subject
IPN triangulation of GRB011121
Event
Date
2001-11-21T23:47:30Z (25 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley and T. Cline, on behalf of the Ulysses GRB team, and
C. Guidorzi, E. Montanari, F. Frontera, and M. Feroci, on behalf
of the BeppoSAX GRBM team, report:
Ulysses and the BeppoSAX GRBM observed GRB011121 (GCN 1147). As
observed by Ulysses, this event had a 25-100 keV fluence of 2 x 10^-5
erg/cm^2, and a peak flux over 0.25 s of 2 x 10^-6 erg/cm^2 s. We have
triangulated it to a preliminary annulus centered at RA(2000),
Decl(2000)=65.922 o, -54.971 o, whose radius is 41.220 +/- 0.067 o (3
sigma). This annulus intersects the BeppoSAX error circle at just two points:
RA(2000) Decl(2000)
11 h 34 m 21.3 s -76 o 05 ' 14 "
11 h 32 m 52.8 s -75 o 57 ' 13 "
This limits the location to the north-eastern segment
of the circle.
This result may be refined.