GCN Circular 14152
Subject
GRB 130122A: RTT150 optical observations
Date
2013-01-28T12:20:09Z (11 years ago)
From
Irek Khamitov at TUG <irekk@tug.tug.tubitak.gov.tr>
A. Galeev (KFU/AST), I. Khamitov (TUG),
I. Bikmaev, N. Sakhibullin (KFU/AST),
R. Burenin, M. Pavlinsky, R. Sunyaev (IKI),
H. Kirbiyik (TUG), U. Kiziloglu (METU), E. Gogus (Sabanci Uni.)
report:
The field of the optical afterglow of GRB 130122A (Lien et al., GCN 14140)
was observed with Russian-Turkish 1.5-m telescope (RTT150, Bakirlitepe,
TUBITAK National Observatory, Turkey) in partially cloudy conditions.
Using the TFOSC instrument we obtained BVR images by 300s starting at
January 23, 02:38:31 UT, i.e. 2.91 hours after the burst. The afterglow is
clearly detected in all images.
On our images we find the optical transient at the coordinates with
uncertainty of 0.1 arcsec:
R.A. (J2000) = 12 57 08.317
Dec. (J2000) = +59 00 53.62
Using the same USNO-B1 star reported by Sonbas et al. (GCN 14141) as a
reference, we estimated the R-magnitudes of the afterglow:
T-T0, Mag. +/- Mag.err
(hour)
2.95 19.88 +/- 0.13
3.06 20.07 +/- 0.10
3.17 19.94 +/- 0.20
3.28 20.00 +/- 0.09
3.33 19.79 +/- 0.13
The combined image of the field can be found at:
http://hea.iki.rssi.ru/grb/130122a/indexeng.html
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