GCN Circular 16005
Subject
GRB 140320B: ISON-NM optical observations
Date
2014-03-20T11:15:24Z (10 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
L. Elenin (KIAM), A. Volnova (IKI), I. Molotov (KIAM), A. Pozanenko
(IKI) report on behalf of larger GRB follow-up collaboration:
We observed of the field of the INTEGRAL GRB 140320B (Mereghetti et
al., GCN 16004) with 0.4-m telescope of ISON-NM observatory starting
on Mar., 20 (UT) 09:35:41. We took unfiltered images of 30 s
exposures. We detect a fading optical afterglow of GRB 140320B
(Guidorzi et al., GCN 16003) in a stacked image of total exposure 300
s and do not detect it in the next stacked image of the same exposure.
Coordinates of the optical afterglow (J2000) 09 42 13.96 +60 16 05.9
(uncertainties of 1 arcsec) coincide with OT coordinates (Guidorzi et
al., GCN 16003). Preliminary photometry of first stacked images is
based on nearby USNO-B1.0 stars:
UT mid, T0+ Filter Exposure, OT, err OT
mid s
09:38:39 0.00878 none 10��30 19.1 0.2
09:44:40 0.03102 none 10��30 > 19.3 UpperlLimit