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GCN Circular 19954

Subject

GRB 160927A: RTT150 optical afterglow candidate

Date

2016-09-27T21:01:06Z (8 years ago)

From

Rodion Burenin at IKI, Moscow <rodion@hea.iki.rssi.ru>

A. Tkachenko, R. Burenin, M. Pavlinsky, R. Sunyaev (IKI),
I. Bikmaev, E. Irtuganov, N. Sakhibullin (KFU/AST),
I. Khamitov, H. Kirbiyik (TUG), U. Kiziloglu (METU), E. Gogus (Sabanci Uni.)

report:

We observed field of Swift short hard GRB 160927A (Gibson et al., GCN
19952Not found
 
 
) with Russian-Turkish 1.5-m telescope (RTT150, Bakirlitepe,
TUBITAK National Observatory, Turkey) using TFOSC. We obtained four
600s exposures in SDSS-r filter at high airmass and very poor seeing
(2.5 arcsec) starting at 18:59:24 UT, i.e. approximately 55 min after
the burst. 

At the edge of improved XRT localization (Evans et al., GCN 19953Not found
 
 
) we
find faint optical source, which is not present in SDSS image, at the
position: 

RA,Dec: 17:04:58.21 +17:19:55.5  (J2000)

For this source we estimate SDSS-r mag =~ 22.3. The finding chart can
be found at: 

http://dlc.rsdc.rssi.ru/~rodion/grb/160927a/r.jpg