[vsnet-grb-info 14431] GRB 140103A: optical upper limit

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  15745
SUBJECT: GRB 140103A: optical upper limit
DATE:    14/01/16 07:41:19 GMT
FROM:    Alina Volnova at SAI MSU  <alinusss at gmail.com>

A. Volnova (IKI), A. Ivanov (KubSU), V. Ivanov (KubSU), V. Lysenko (KubSU),
I. Molotov (KIAM), A. Pozanenko (IKI) report on behalf of GRB follow-up
collaboration:

We observed the field of the Swift GRB 140103A (Mangano et al., GCN 15656)
with 0.51-m f/8 telescope of Kuban State University Astrophysical
Observatory on Jan. 3, starting 12 minutes after GRB trigger. We obtained
several images of 30 s exposure in R-band. In the refined XRT position
(Mangano, GCN 15666) we do not detect any object in stacked image. In
particular we do not detected the optical afterglow candidate reported by
Volnova et al. (GCN 15735).

Details of the photometry are following:

Date               T_start      t-t0,           Filter  Exp.,      OT
                        (UT)          mid, d                  s
2014-01-03   00:42:05    0.02314    R        80*30.   >17.2 (3 sigma)