[vsnet-grb-info 3360] GRB 060502A: Optical afterglow observations

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  5195
SUBJECT: GRB 060502A: Optical afterglow observations
DATE:    06/06/02 15:06:26 GMT
FROM:    Pall Jakobsson at U Hertfordshire  <palli at star.herts.ac.uk>

Pall Jakobsson (Univ. of Hertfordshire), Erik Zackrisson,
Janne Holopainen (Tuorla Observatory), Genoveva Micheva
(Stockholm Observatory), Brian L. Jensen, Johan P. U. Fynbo
and Jens Hjorth (DARK, NBI) report:

Using MOSCA on the 2.56-meter Nordic Optical Telescope, we
obtained 3*300 s R-band images of the GRB 060502A field
(La Parola et al., GCN#5047) on May 3.21 (1.08 days post
burst). At the location of the optical afterglow (Pool et al.,
GCN#5068), 0.7 arcsec outside the XRT borders (La Parola et al.,
GCN#5054), we detect a source with R = 22.5. Combined with
the R-band magnitude reported by Hicken & Garnavich (GCN#5070),
this implies a decay slope of alpha = 1.0.

An image of the field is shown at:

http://star-www.herts.ac.uk/~palli/grb060502A/grb060502A.jpg