GCN Circular 1771
Subject
IPN triangulation of GRB021219
Event
Date
2002-12-19T22:27:31Z (23 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley and T. Cline, on behalf of the Ulysses GRB team, and
D.Gotz (IASF-Milano), P.Favre (ISDC), S.Mereghetti (IASF-Milano),
J.Borkowski (ISDC), and the INTEGRAL Science Working team,
report:
This burst (GCN 1766, 1767, 1768) was also observed by Ulysses.
Although the INTEGRAL timing is still undergoing refinement, we have
triangulated it assuming a systematic uncertainty of 100 ms, which is
supported by recent SGR observations. The preliminary annulus is
centered at RA, Decl(2000)= 182.935, 36.337 degrees, with radius
78.549 +/- 0.023 degrees (3 sigma ). This annulus intersects the
INTEGRAL error circle given in GCN 1768 at two points:
RA DEC
282.557459=18 H 50 M 13.79 S 31.832096= 31 o 49' 55"
282.642596=18 H 50 M 34.22 S 31.932013= 31 o 55' 55"
This reduces the error box size to about 15 square arcminutes.
This annulus may be improved. A map has been posted at
ssl.berkeley.edu/ipn3/021219.