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GCN Circular 15745

Subject

GRB 140103A: optical upper limit

Date

2014-01-16T07:41:19Z (10 years ago)

From

Alina Volnova at SAI MSU <alinusss@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 15656Not found
 
 
)
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 15666Not found
 
 
) 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 15735Not found
 
 
).

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)