[vsnet-grb-info 15207] GRB 140629A: SAO RAS monitoring
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Tue Jul 1 22:41:26 JST 2014
TITLE: GCN CIRCULAR
NUMBER: 16499
SUBJECT: GRB 140629A: SAO RAS monitoring
DATE: 14/07/01 13:41:18 GMT
FROM: Vladimir Sokolov at SAO RAS <sokolov at sao.ru>
A. Moskvitin (SAO-RAS, N. Arkhyz), R. Burenin (IKI, Moscow),
R. Uklein, V. Sokolov, T. Sokolova (SAO-RAS, N. Arkhyz),
on behalf of a larger collaboration, report:
We performed the photometrical monitoring of the GRB 140629A OT (Lien
et al., GCNC 16477) with two optical telescopes of SAO RAS: the 6-m
BTA (V band) and the 1-m Zeiss-1000 (BVRcIc bands) on the night of
June, 29/30. Observations started 4.1 hours after the Swift trigger.
The optical transient (Lien et al., GCNC 16477; Yurkov et al.,
GCNC 16478; Bikmaev et al., GCNC 16482; Masi, GCNC 16483; Maehara,
GCNC 16484; Malesani et al., GCNC 16485; Sonbas et al., GCNC 16486;
and other teams) is clearly detected in every single image.
On the basis of the same star from USNO-B1 as Bikmaev et al. (GCNC 16482)
with the coordinates R.A., = 16:35:59.9, Decl.= +41:51:10, J2000 and
magnitude R1_mag = 16.49 we made preliminary photometric estimations
of the OT Rc images. The results are as follows:
# Start,UT exp,s R_mag +/- err
====================================
1 19:00:41 180.00 18.02 +/- 0.05
2 19:05:38 180.00 18.20 +/- 0.05
3 19:11:11 180.00 18.45 +/- 0.07
4 19:28:39 300.00 18.25 +/- 0.04
5 20:03:55 300.00 18.53 +/- 0.04
6 20:26:36 300.00 18.58 +/- 0.04
7 20:53:25 300.00 18.87 +/- 0.04
8 22:10:17 300.00 19.00 +/- 0.05
9 22:33:32 300.00 19.11 +/- 0.05
10 22:57:16 300.00 19.00 +/- 0.05
11 23:25:27 300.00 19.31 +/- 0.09
12 23:49:07 300.00 19.38 +/- 0.11
Further analysis and observations go on.
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