GCN Circular 6613
Subject
GRB 070707: optical afterglow
Event
Date
2007-07-09T04:20:54Z (19 years ago)
From
Paolo D'Avanzo at INAF-OAB <paolo.davanzo@brera.inaf.it>
P. D'Avanzo (INAF-OABr), S. Piranomonte (INAF-OAR) & S. Vergani
(DIAS-DCU) on behalf of the MISTICI collaboration L. Christensen, P.
Amico (ESO) report:
We observed again the field of the short/hard GRB 070707 (Beckmann et
al., GCN 6605; Gotz et al., GCN 6607) with the ESO-VLT in imaging mode.
Observations have been carried out around Jul 09.08 UT in the R band
with the FORS1 camera.
A comparison with the images of our previous observing run (D'Avanzo et
al., GCN 6609) revealed that the object inside the XRT error box
(Beardmore et al., GCN 6610) reported by Piranomonte et al. (GCN 6612)
faded of about 0.7 +/- 0.1 mag. We thus propose this object as the
optical afterglow of GRB 070707.
Further observations are planned. We acknowledge the ESO staff for
reliable support.
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