GCN Circular 9326
Subject
GRB 090509: GROND afterglow candidate
Date
2009-05-09T06:00:25Z (15 years ago)
From
Thomas Kruehler at MPE/MPI <kruehler@mpe.mpg.de>
F. Olivares, J. Greiner, T. Kruehler (all MPE Garching) and S. Klose (TLS)
report on behalf of the GROND team:
We observed the field of GRB 090509 (Swift trigger 351525; Grupe et
al., GCN #9325) simultaneously in g'r'i'z'JHK with GROND (Greiner et al.
2008, PASP 120, 405) mounted at the 2.2 m ESO/MPI telescope at La Silla
Observatory (Chile).
We detect a bright uncatalogued source in all bands at
16:05:39.01 -28:23:59.7
with a magnitude of r' = 17.9 at 15 min after the burst, calibrated using
the GROND zeropoint.