GCN Circular 2124
Subject
GRB 030329: BVRI photometry at Asiago
Event
Date
2003-04-09T19:50:40Z (22 years ago)
From
Daniele Malesani at SISSA-ISAS,Trieste,Italy <malesani@sissa.it>
A. Simoncelli (INAF, Brera, I), D. Malesani (SISSA, Trieste, I), A.
Della Valle (INAF, Padova, I), N. Masetti (IASF, Bologna, I), L.A.
Antonelli (INAF, Roma, I), S. Covino (INAF, Brera, I), E. Pian (INAF,
Trieste, I), on behalf of a larger Italian collaboration, report
We have obtained BVRI images of the afterglow (Peterson & Price, GCN
1985) of GRB 030329 (Vanderspek et al., GCN 1997), using the 182cm
Copernico telescope of the Astronomical Observatory of Padova (Italy),
plus BFOSC. Seeing was ~3"; the afterglow was clearly detected in all
bands; we measured for it the following BVRI magnitudes, with respect to
the calibration performed by Henden (GCN 2082):
UT start exptime filter mag err
------------------------------------------
Apr. 4.908 600 s R 18.14 +- 0.02
Apr. 4.916 1200 s B 18.88 +- 0.02
Apr. 4.932 600 s I 17.71 +- 0.02
Apr. 4.941 600 s V 18.55 +- 0.02
Assuming a powerlaw shape for the spectrum (F_nu propto nu^-beta), the
best fit to our data yields beta~1.
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