TITLE:   GCN CIRCULAR
NUMBER:  16055
SUBJECT: GRB 140129B: AAO optical upper limit
DATE:    14/03/31 16:06:47 GMT
FROM:    Alina Volnova at SAI MSU  <alinusss@gmail.com>

GRB 140129B: AAO optical upper limit

A. Volnova (IKI), R. Inasaridze (AAO), V. Zhuzhunadze (AAO), Yu.
Krugly (IA KhNU), I. Molotov (KIAM), A. Pozanenko (IKI) report on
behalf of larger GRB follow-up collaboration:

We observed the field of Swift GRB 140129B (Bernardini et al., GCN
15765) with AS-32 (0.7m) telescope of Abastumani Observatory starting
on on Jan. 29 (UT) 15:23:49. We obtained several unfiltered frames
with exposures of 120 s. Within the enhanced XRT circle (Goad et al.,
GCN 15770) we do not detect the afterglow (Bernardini et al., GCN
15765; Ivanov et al., GCN 15766).


The details of the photometry are the following:

UT start t-T0 Filter Exp. Uplim
(mid, days) (s) (3 sigma)
15:23:49 0.10949 None 4*120 18.7


The photometry is based on SDSS stars, R mag (R mag obtained using ugriz
transformations in BVRI (Lupton, 2005):

SDSS id R
J214659.19+261356.3 16.404
J214707.35+261127.0 15.825
J214657.00+261421.1 15.385