[vsnet-grb-info 21555] GRB 190109A: Mondy optical upper limit
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Thu Jan 10 00:31:32 JST 2019
TITLE: GCN CIRCULAR
NUMBER: 23654
SUBJECT: GRB 190109A: Mondy optical upper limit
DATE: 19/01/09 15:29:40 GMT
FROM: Alexei Pozanenko at IKI, Moscow <apozanen at iki.rssi.ru>
S. Belkin (IKI), E. Klunko (ISTP), A. Pozanenko (IKI), E. Mazaeva (IKI),
A. Volnova (IKI) report on behalf of IKI-FuN:
We observed the field of the GRB 190109A (Sbarufatti et al., GCN 23648)
with AZT-33IK telescope of Sayan observatory (Mondy). We obtained
several images in R-filter starting on Jan. 09 (UT) 12:17:03, i.e. 21
minutes after the burst trigger. We do not detect any object within
enhanced Swift-XRT position (Beardmore et al., GCN 23652). Preliminary
photometry of the field is following.
Date UT start t-T0 Filter Exp. OT Err. UL(3sigma)
(mid, days) (s)
2019-01-09 12:17:03 0.02463 R 1900 n/d n/d 22.6
The photometry is based on several nearby USNO-B1.0 stars.
More information about the vsnet-grb-info
mailing list