GRB 991229
GCN Circular 512
Subject
IPN error boxes for GRB991229
Date
1999-12-30T22:50:51Z (25 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley, on behalf of the Ulysses GRB team, and T. Cline and E. Mazets,
on behalf of the KONUS-WIND and NEAR GRB teams, report:
Ulysses, KONUS-WIND, and NEAR observed a moderately intense
(25-100 keV fluence ~10^-5 erg/cm^2), 100 s long gamma-ray burst
on December 29, 1999 at 15:10:26 UT. Triangulation of this
event yields two alternate, ~700 sq. arcmin. error boxes whose
corners are at:
RA(2000) DEC(2000)
22 h 26 m 7.91 s 28 o 43 ' 45.47 "
22 h 24 m 41.17 s 29 o 10 ' 38.02 "
22 h 25 m 45.15 s 29 o 28 ' 9.61 "
22 h 24 m 5.15 s 30 o 4 ' 45.86 "
AND
22 h 17 m 11.91 s 35 o 22 ' 46.66 "
22 h 17 m 2.57 s 34 o 49 ' 56.05 "
22 h 18 m 45.26 s 34 o 42 ' 23.34 "
22 h 18 m 49.07 s 33 o 59 ' 50.67 "
Although these error boxes can be refined, it will probably
not be possible to resolve the ambiguity between them with
the present observations.
GCN Circular 516
Subject
Single IPN error box for GRB991229
Date
2000-01-05T18:35:47Z (25 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley, on behalf of the Ulysses GRB team, C. Kouveliotou and
R. M. Kippen, on behalf of the BATSE GRB team, and T. Cline and
E. Mazets, on behalf of the KONUS-WIND and NEAR GRB teams, report:
GRB991229 (GCN 512) was observed by BATSE (trigger 7925). The
BATSE localization indicates that the second error box given
in GCN 512 is the correct one:
RA(2000) DEC(2000)
22 h 17 m 11.91 s 35 o 22 ' 46.66 "
22 h 17 m 2.57 s 34 o 49 ' 56.05 "
22 h 18 m 45.26 s 34 o 42 ' 23.34 "
22 h 18 m 49.07 s 33 o 59 ' 50.67 "