GCN Circular 865
Subject
IPN TRIANGULATION OF GRB001025B (SHORT/HARD)
Date
2000-10-27T00:40:45Z (24 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley, on behalf of the Ulysses GRB team,
T. Cline, on behalf of the Konus-Wind and NEAR GRB teams,
and E. Mazets, and S. Golenetskii, on behalf of the KONUS-WIND GRB team, report:
Ulysses, NEAR, and KONUS-WIND observed this GRB at 71369 seconds.
As observed by Ulysses, it had a duration of < 0.25
seconds, a 25-100 keV fluence of approximately 2E-07 erg/cm2,
and a peak flux of approximately 8E-07 erg/cm2 s over 0.25 seconds
We have triangulated it to a preliminary, 3 sigma error
whose approximate area is 110. sq. arcmin. and whose
coordinates are:
RA(2000) DEC(2000)
ERROR BOX CENTER: 18 h 21 m 40.78 s -5 o 8 ' 34.45 "
ERROR BOX CORNER 1: 18 h 21 m 26.96 s -5 o 8 ' 54.58 "
ERROR BOX CORNER 2: 18 h 22 m 56.09 s -5 o 22 ' 40.46 "
ERROR BOX CORNER 3: 18 h 20 m 26.72 s -4 o 54 ' 38.26 "
ERROR BOX CORNER 4: 18 h 21 m 54.61 s -5 o 8 ' 14.39 "
The duration and energy spectrum of this event place it clearly
in the short/hard category. We add one note of caution: this
burst was detected by Ulysses with a significance of only 4.5
sigma (statistical), which is at the limit of a reliable detection.
This error box may be improved