GRB 021108
GCN Circular 1679
Subject
IPN triangulation of GRB021108 (annulus)
Date
2002-11-09T17:26:53Z (23 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley, on behalf of the Ulysses GRB team,
E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team,
and
T. Cline, on behalf of the Ulysses and Konus GRB teams,
report:
Ulysses and Konus-Wind observed this GRB at 20395 seconds. As
observed by Ulysses, it had a duration of approximately 25 seconds, a
25-100 keV fluence of approximately 5.1E-06 erg/cm2, and a peak flux
of approximately 1.0E-06 erg/cm2 s over 0.25 seconds.
We have triangulated it to a preliminary annulus centered at RA,
Decl(2000)=0.517, -35.271 degrees, whose radius is 47.726 +/- 0.026
degrees (3 sigma ).
This annulus may be constrained and/or improved.
It is not known at this point whether this event was observed by Mars
Odyssey, and thus whether a small error box can be derived for it.
GCN Circular 1683
Subject
IPN triangulation of GRB021108 (large error box)
Date
2002-11-12T17:21:49Z (23 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley, on behalf of the Ulysses GRB team,
D. M. Smith, R. P. Lin, J. McTiernan, R. Schwartz, C. Wigger, W.
Hajdas, and A. Zehnder, on behalf of the RHESSI GRB team,
E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team, and
T. Cline, on behalf of the Ulysses and Konus GRB teams, report:
This event (GCN 1679) was also observed by RHESSI. Triangulation,
RHESSI Earth-blocking, and the Konus ecliptic latitude response
constrain the annulus (RA, Decl(2000)=0.517, -35.271 degrees, radius
47.726 +/- 0.026 degrees, 3 sigma) to that portion between RA,
Dec=296.8, -67.1 degrees, and 297.4, -46.5 degrees.
Only minor improvements to this localization are expected. As the Mars
Odyssey spacecraft was in safe mode, with all instruments off, a small
error box cannot be derived for this event.
GCN Circular 1691
Subject
IPN triangulation of GRB021108 (CORRECTION; TWO LARGE ERROR BOXES)
Date
2002-11-14T17:55:31Z (23 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley, on behalf of the Ulysses GRB team,
D. M. Smith, R. P. Lin, J. McTiernan, R. Schwartz, C. Wigger, W.
Hajdas, and A. Zehnder, on behalf of the RHESSI GRB team,
E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team, and
T. Cline, on behalf of the Ulysses and Konus GRB teams, report:
Further analysis of this event (GCN 1679, 1683) reveals that it cannot
be localized to a single error box at this time. The annulus reported in
GCN 1679 (RA, Decl(2000)=0.517, -35.271 degrees, radius 47.726
+/- 0.026 degrees, 3 sigma) can only be constrained to two alternate
error boxes. One lies between between RA, Dec=296.8, -67.1 degrees,
and 297.4, -46.5 degrees, as reported in GCN 1683. The other lies
between RA, Dec=44.5, -9.2 degrees and 56.0, -26.7 degrees.