GCN Circular 15512
Subject
GRB 131122A: i-band observations from NOT
Date
2013-11-23T02:08:00Z (10 years ago)
From
Javier Gorosabel at IAA-CSIC <jgu@iaa.es>
J. Gorosabel (IAA-CSIC/UPV-EHU), A. de Ugarte Postigo (IAA-CSIC, DARK/NBI), D. Xu (DARK/NBI), S. Schulze (PUC, MCSS), N.R. Tanvir (U. Leicester), O. Smirnova (NOT, U. Latvia), J. K�re (U. Oslo), E. Pakstiene (Vilnius U.), A.B. Aksnes, C. Eide, E.N. Traore, J. Joberg, L.K. Seljebotn, N. Von Huth, M. Lapadatu, R.W. Cale, M Heger (Horten videreg�ende skole) report on behalf of a larger collaboration:
We observed the field of the INTEGRAL GRB 131122A (Gorbovskoy et al., GCN 15509) with the 2.5m Nordic Optical Telescope (NOT) equipped with ALFOSC. Observations began at 00:34 UT (3.13 hr after the burst), when the field was at an airmass of ~3, and consisted of 8x180s in i-band, covering the complete INTEGRAL error box. The seeing of the combined image is around 0.9".
We do not see any obvious new source down to the limit of the SDSS i-band image to which we have compared, although we note that our frame is somewhat deeper, showing faint sources not present in the SDSS. A more precise localisation and/or deeper comparison image will be needed in order to identify a possible optical counterpart to GRB 131122A.