[vsnet-grb-info 7550] GRB 090407: VLT observations
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Wed Apr 8 10:03:05 JST 2009
TITLE: GCN CIRCULAR
NUMBER: 9108
SUBJECT: GRB 090407: VLT observations
DATE: 09/04/08 01:02:57 GMT
FROM: Daniele Malesani at Dark Cosmology Centre, Niels Bohr Inst <malesani at astro.ku.dk>
Daniele Malesani and Johan Peter Uldall Fynbo report on behalf of a
larger collaboration:
We observed the field of GRB 090407 (Ziaeepour et al., GCN 9101) with
the ESO VLT equipped with FORS2. Observations were carried out with mean
time Apr 8.0 UT (13.7 hr after the GRB), partially during evening twilight.
Inside the X-ray error circle (Evans et al., GCN 9105), no source is
detected down to limiting magnitudes R > 23.8 and z(AB) > 23.8, based on
archival zeropoints (accurate up to ~0.2 mag).
We encourage deeper observations, possibly in the near infrared.
We acknowledge significant support from the ESO staff at Paranal, in
particular Gianni Marconi and Elena Mason.
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