GCN Circular 1296
Subject
GRB 020322: Optical Sources and Improved Astrometry
Event
Date
2002-03-23T04:33:49Z (25 years ago)
From
Josh Bloom at CIT <jsb@astro.caltech.edu>
GRB 020322: Optical Sources and Improved Astrometry
J. S. Bloom (Caltech), N. Mirabal & J. P. Halpern (Columbia), D. W. Fox,
and P. A. A. Lopes (Caltech), report on behalf of a larger collaboration:
"A stacked Gunn r-band image from the Palomar 60-inch (9x10 min; see
GCN #1294) reveals another faint source in the southeast portion of
the XMM error circle.
ID x y J2000
a 1129.286 1408.630 RA = 18:01:04.20, Dec = +81:06:41.27
b 1135.912 1373.888 RA = 18:01:02.98, Dec = +81:06:28.17
c 1126.379 1367.044 RA = 18:01:04.51, Dec = +81:06:25.49
Source "a" (outside the error circle) is that discussed in
Szentgyorgyi et al. (GCN #1295), source "b" (inside the error circle)
is from Bloom et al. (GCN #1294), and source "c" (inside the error
circle) is the faint source mentioned here. The ICRS positions are
found by comparison with the USNO A2.0 and are uncertain by about 300
mas, 350 mas in the RA and DEC, respectively. The x, y coordinates are
in pixels of the stacked image. This .fits image, with a WCS written
in the header, may be obtained at:
http://www.astro.caltech.edu/~jsb/GRB/sum-r1.fits.gz
An image of the field showing source a,b, and c may be found at
http://www.astro.caltech.edu/~jsb/GRB/grb020322-palr.gif
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