GCN Circular 2187
Subject
IPN triangulation of GRB030501 (IBIS event; annulus)
Event
Date
2003-05-01T19:01:18Z (23 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley, on behalf of the Ulysses GRB team, and
A. von Kienlin, G. Lichti, and A. Rau, on behalf of the
INTEGRAL SPI-ACS GRB team, report:
Ulysses and INTEGRAL (SPI-ACS) also observed this burst (GCN 2183). As
observed by Ulysses, it had a duration of approximately 75 seconds, a
25-100 keV fluence of approximately 1.1E-06 erg/cm2, and a peak flux
of approximately 4.9E-07 erg/cm2 s over 0.25 seconds. Because this
event was quite weak, these parameters are uncertain by a factor of
about 2.
We have triangulated it to a preliminary annulus centered at RA,
Decl(2000)= 332.536, -37.604 degrees, whose radius is 61.259 +/- 0.294
degrees (3 sigma ). This annulus is consistent with, but does not
constrain, the IBIS localization given in GCN 2183.
This annulus may be improved.