D. Malesani (SISSA/ISAS), L.A. Antonelli (INAF/OAR), S. Covino
(INAF/OABr), E. Palazzi (INAF/IASF Bo), G. Andreuzzi (INAF/TNG), and G.
Tessicini (INAF/TNG), report on behalf of a larger Italian collaboration:
We observed the field of GRB 060121 (Arimoto et al., GCN 4550;
Prigozhin et al., GCN 4551; Boer et al., GCN 4552) at two epochs with
the Italian TNG telescope located in the Canary Islands. Photometry was
performed in the R-band starting on Jan 22.021 UT (Antonelli et al., GCN
4556) and Jan 22.193 UT (2.1 and 6.2 h after the GRB, respectively). The
second run provided images of lower quality, due to bad observing
Inside the XRT error circle (Mangano et al., GCN 4560), we see a faint
source which is detected in our first dataset but is not detected in the
second epoch (which is, however, shallower).
The coordinates are (J2000):
alpha = 09:09:51.93
delta = +45:39:45.4
We estimate an error of about 0.5" (mainly due the low S/N of the object).
Even if at the moment we do not makeany claim of variability, we suggest
this object may be the optical counterpart of GRB 060121.
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