GCN Circular 6876
Subject
GRB 071010A: bright NIR afterglow
Date
2007-10-11T01:07:21Z (17 years ago)
From
Daniele Malesani at Niels Bohr Inst,Dark Cosmology Center <malesani@astro.ku.dk>
D. Malesani (DARK), V. D'Elia (INAF/OAR), S. Covino (INAF/OABr), G.
Andreuzzi, A. Garcia de Gurtubai (INAF/TNG), and E. Maiorano (INAF/IASF
Bo), report on behalf of a larger collaboration:
We observed the optical afterglow of GRB 071010A (Moretti et al., GCN
6859; Klotz et al., GCN 6860) with the TNG telescope located in the
Canary Islands. Observations were carried out with the NICS instrument
equipped with the H filter, with mean time Oct 10.82 UT (15.7 hr after
the GRB).
At the position reported by Bloom et al. (GCN 6861), we clearly detect a
pointlike object, with H = 16.62 +- 0.05. We note that this value is
remarkably bright. Assuming typical afterglow colors (Fnu propto nu^-1),
this corresponds to R ~ 19. When compared to the Keck photometry
reported by Perley et al. (GCN 6872), this may suggest a flat segment or
even a flaring behaviour. Alternatively, the afterglow may be very red.
We thus encourage further observations to characterize the afterglow
light curve and spectrum.
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