GCN Circular 11104
Subject
GRB100816A: TNG optical afterglow confirmation.
Date
2010-08-16T06:28:22Z (14 years ago)
From
Angelo Antonelli at Obs. Astro. di Roma <angelo.antonelli@oa-roma.inaf.it>
L. A. Antonelli (INAF-OAR), A. Fiorenzano (INAF-TNG), G. Tessicini
(INAF-TNG), A. Stamerra (UniPisa) on behalf of the CIBO collaboration
report:
We observed the field of the short hard GRB100816A (Swift trigger
431764; Oates et al., GCN 11102) with the Italian 3.6m TNG telescope
(La Palma, Canary Islands) equipped with the DOLORES camera.
Observations started on Aug 16 at 03:22 UT (~2.8 hrs after the burst)
under very poor weather conditions (high cloudiness and high
humidity). We acquired a R band image of the GRB field for a total
exposure time of 180s. We clearly detect a source consistent with the
one reported by (Oates et al., GCN 11102). This souce, located at RA
(J2000)=23:26:57.58; Dec(J2000)=+26:34:42.7 (+/-0.5''), showed a
magnitude R~20.5 (calibrated against USNO B1.0) at the epoch of the
observation. Due to its fading behavior with respect to the UVOT
observation, we confirm that this source is the optical afterglow of
GRB100816A.
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