GCN Circular 2509
Subject
GRB 040106: Optical observations
Date
2004-01-07T10:51:19Z (21 years ago)
From
Paul Price at IfA,UH <price@ifa.hawaii.edu>
P.A. Price (IfA), N. Morell (La Plata, Argentina), S.R. Kulkarni
(Caltech) and J. Fulbright (OCIW) report:
We have observed the error circle of the INTEGRAL GRB 040106 (GCN
#2505) with the Swope 40-inch telescope at Las Campanas Observatory,
commencing at Jan 7.32 UT. Observations consisted of 2x600 sec
exposures in the Washington T2 filter (central wavelength ~ 8000A) and
cover the entire INTEGRAL error circle to a limiting magnitude of
approximately R ~ 21 mag.
Within the XMM error circle (GCN #2508), we identify four sources, two
of which are present in the Second Digitised Sky Survey images. The
other two sources are likely at too faint a level to appear in the
DSS2. The coordinates of these are:
(a) 11:52:12.56 -46:47:15.3 J2000 R ~ 20.7 mag
(b) 11:52:13.87 -46:47:06.5 J2000 R ~ 20.5 mag (edge)
Position errors are approximately 0.4". Estimated (statistical)
magnitude errors are 0.2 mag.
This message may be cited.
[GCN OPS NOTE (31 Mar 04): The erroneous "030106" date was changed
to the correct "040106" data in the Subject line and in the first line
of the body of the Circular.]