GCN Circular 3953
Subject
GRB050908: VLT R-band decay index.
Date
2005-09-08T18:09:26Z (19 years ago)
From
Angelo Antonelli at Obs. Astro. di Roma <a.antonelli@mporzio.astro.it>
S. Piranomonte, L. Calzoletti (INAF/OAR), P. D'Avanzo (INAF/OABr),
L.A. Antonelli (INAF/OAR), F. Patat, C. Ledoux (ESO), D. Malesani
(SISSA/ISAS), G. Chincarini (INAF/OABr & Univ. Milano-Bicocca), S.
Covino, D. Fugazza, G. Tagliaferri(INAF/OABr), F. Fiore and L. Stella
(INAF/OAR), report on behalf of the MISTICI collaboration:
"We observed the optical afterglow (Torii, GCN 3943; Cenko, Fox &
Berger, GCN 3944) of GRB 050908 (Goad et al., GCNs 3942, 3946) with the
ESO-VLT UT2, equipped with the FORS1 instrument. R-band observations
were performed in Rapid Response Mode (RRM) on Sep 8.268 UT and as a
ToO on Sept 8.415 UT (42 and 255 minutes after the GRB respectively).
During the two epoch observations the afterglow decays as a power law
having decay index of -0.93+/-0.05.
This message may be cited"
[GCN OPS NOTE(10sep05): Per author's request, "N. Patat" was changed to "F. Patat".]