[vsnet-grb-info 3259] GRB060507: optical afterglow detection
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Tue May 9 22:18:17 JST 2006
TITLE: GCN GRB OBSERVATION REPORT
NUMBER: 5094
SUBJECT: GRB060507: optical afterglow detection
DATE: 06/05/09 13:17:15 GMT
FROM: Christina Thoene at Niels Bohr Institute,DARK Cosmo Ctr <cthoene at astro.ku.dk>
Christina C. Thoene, Brian L. Jensen, Johan Fynbo (Dark Cosmology Centre),
Jan-Erik Solheim (University of Oslo) report
We observed the field of GRB060507 (GCN 5084) in the I-band with the NOT
and ALFOSC on La Palma, starting at May 7th, UT 03:08:19 (1.13h after the
burst) at high airmass. On the edge of the XRT revised error circle (99%
confidence) (GCN 5087) we detect a new source at the position (J2000)
RA = 05:59:50.52
Dec = +75:14:55.9
The preliminary I-band magnitude obtained from 3x300s stacked images with
a mean time of 1.3h after the burst is
I = 19.1 +- 0.1
(compared to four nearby USNO stars)
5x300 I-band images from May 9th show that the source is transient and
therefore likely to be the afterglow of GRB060507
A finding chart is available at:
http://www.astro.ku.dk/~brian_j/grb/grb060507.079/
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