GCN Circular 9882
Subject
GRB090904B: REM observations
Date
2009-09-04T03:03:22Z (15 years ago)
From
Angelo Antonelli at Obs. Astro. di Roma <a.antonelli@oa-roma.inaf.it>
S. Covino, L.A. Antonelli, P. D'Avanzo, D. Fugazza, S. Campana, G. Chincarini,
V. D'Elia, F. D'Alessio, F. Fiore, P. Goldoni, C. Guidorzi, E. Maiorano, L.
Nicastro, E. Palazzi, E. Pian, S. Piranomonte, L. Stella, G. Tagliaferri, G.
Tosti, V. Testa, S.D. Vergani, F. Vitali report on behalf of the REM team:
The REM 60-cm robotic telescope located at ESO-La Silla reacted promptly after
the Swift alert for GRB09094B. Observations began 108 seconds after the GRB time
(40 s after the trigger) with the R and H bands and continued with all the
available filters (VRIJHK). No transient was singled out in the images, although
a not varying 2MASS star with H=11.95 seems to be coincident with the XRT position.
The field is located very close to the Galactic Center (LII = 2.12 deg, BII =
3.64 deg) and is heavily reddened and crowded, requiring further analyses to
evaluate the chance for this positional coincidence.
Further observations are in progress.
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