GRB 021013
GCN Circular 1632
Subject
IPN triangulation of GRB021013 (annulus)
Date
2002-10-14T00:56:06Z (23 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley and T. Cline, on behalf of the Ulysses and Mars Odyssey GRB
teams,
I. Mitrofanov, D. Anfimov, A. Kozyrev, M. Litvak and A. Sanin, on
behalf of the HEND/Odyssey GRB team, and
W. Boynton, C. Fellows, K. Harshman, C. Shinohara and R. Starr, on
behalf of the GRS/Odyssey GRB team, report:
Ulysses, HEND, and GRS observed this burst at around 13622 +/- 907 s.
As observed by Ulysses, it had a duration of ~100 s, a 25-100 keV
fluence ~6.7E-6 erg/cm2, and a peak flux over 0.5 s of ~9x10^-7 erg/cm2 s.
We have localized it to an annulus centered at RA, Decl=351.792,
-65.129 degrees, whose radius is 52.578 +/- 0.1 degrees.
All the above numbers are based on a very preliminary analysis; in
particular, since the burst has only been localized to an annulus, the
Earth-crossing time cannot be given to better precision. It is
possible that one of the near-Earth spacecraft in the IPN detected it,
so it should eventually be possible to obtain a more precise position
and Earth-crossing time.
GCN Circular 1634
Subject
IPN triangulation of GRB021013 (two small error boxes)
Date
2002-10-14T17:49:57Z (23 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley and T. Cline, on behalf of the Ulysses, Konus, and Mars Odyssey GRB teams,
I. Mitrofanov, D. Anfimov, A. Kozyrev, M. Litvak and A. Sanin,
on behalf of the HEND/Odyssey GRB team,
W. Boynton, C. Fellows, K. Harshman, C. Shinohara and R. Starr,
on behalf of the GRS/Odyssey GRB team, and
E. Mazets and S. Golenetskii, on behalf of the Konus-Wind
and Helicon-Coronas-F GRB teams, report:
Ulysses, Mars Odyssey (HEND and GRS), Helicon, and Konus-Wind observed
this GRB at 14496 seconds (GCN 1632). We have triangulated it to two
alternate, preliminary 3 sigma error boxes, each with area ~80 sq.
arcminutes:
RA(2000) DEC(2000)
ERROR BOX CENTER: 14 h 51 m 55.41 s -56 o 13 ' 55.57 "
ERROR BOX CORNER 1: 14 h 53 m 22.84 s -56 o 3 ' 41.08 "
ERROR BOX CORNER 2: 14 h 54 m 23.38 s -55 o 59 ' 49.55 "
ERROR BOX CORNER 3: 14 h 49 m 22.86 s -56 o 28 ' 9.56 "
ERROR BOX CORNER 4: 14 h 50 m 26.16 s -56 o 24 ' 13.51 "
OR
ERROR BOX CENTER: 9 h 32 m 54.34 s -60 o 29 ' 43.75"
ERROR BOX CORNER 5: 9 h 31 m 3.13 s -60 o 21 ' 40.45 "
ERROR BOX CORNER 6: 9 h 29 m 50.52 s -60 o 19 ' 16.57 "
ERROR BOX CORNER 7: 9 h 36 m 3.62 s -60 o 40 ' 9.89 "
ERROR BOX CORNER 8: 9 h 34 m 47.79 s -60 o 37 ' 46.96 "
There is a strong probability, which cannot be quantified, that the
latter is in fact the correct position. We will attempt to verify
this as soon as possible.
These error boxes may be improved.
GCN Circular 1636
Subject
IPN triangulation of GRB021013 (single error box)
Date
2002-10-15T17:10:24Z (23 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley and T. Cline, on behalf of the Ulysses, Konus, and Mars Odyssey GRB teams,
I. Mitrofanov, D. Anfimov, A. Kozyrev, M. Litvak and A. Sanin,
on behalf of the HEND/Odyssey GRB team,
W. Boynton, C. Fellows, K. Harshman, C. Shinohara and R. Starr,
on behalf of the GRS/Odyssey GRB team, and
E. Mazets and S. Golenetskii, on behalf of the Konus-Wind
and Helicon-Coronas-F GRB teams, report:
Analysis of the full set of data indicates that this burst (GCN 1634)
originated from the first error box, contrary to preliminary indications:
RA(2000) DEC(2000)
ERROR BOX CENTER: 14 h 51 m 55.41 s -56 o 13 ' 55.57 "
ERROR BOX CORNER 1: 14 h 53 m 22.84 s -56 o 3 ' 41.08 "
ERROR BOX CORNER 2: 14 h 54 m 23.38 s -55 o 59 ' 49.55 "
ERROR BOX CORNER 3: 14 h 49 m 22.86 s -56 o 28 ' 9.56 "
ERROR BOX CORNER 4: 14 h 50 m 26.16 s -56 o 24 ' 13.51 "