[vsnet-grb-info 25730] GRB 200524A: Assy optical observations
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Thu May 28 00:14:31 JST 2020
TITLE: GCN CIRCULAR
NUMBER: 27830
SUBJECT: GRB 200524A: Assy optical observations
DATE: 20/05/27 15:13:26 GMT
FROM: Alexei Pozanenko at IKI, Moscow <apozanen at iki.rssi.ru>
S. Belkin (IKI), V. Kim (AFIF, Pulkovo Observatory), A. Pozanenko (IKI),
M. Krugov (AFIF), E. Mazaeva (IKI), A. Volnova (IKI) report on
behalf of larger GRB IKI FuN collaboration:
We observed Fermi-LAT GRB 200524A (Dirirsa et al., GCN 27797; see also
Pookalil et al., GCN 27809; Capalbi et al., GCN 27811; Gupta et al.,
GCN 27818) with AZT-20 1.5 m telescope of Assy-Turgen observatory
starting on May. 26 (UT) 15:34:49 in r'-filter. Optical afterglow
discovered by ZTF (Ho et al., GCN 27799) and observed by several
observations (Kumar et al., GCN 27800; Rumyantsev et al., GCN 27802;
Sanwal et al., GCN 27803; Perley et al., GCN 27805; Kumar et al., GCN
27806; de Ugarte Postigo et al., GCN 27807; Blazek et al., GCN 27810;
Ogawa et al., GCN 27813; Izzo, GCN 27817; Belkin et al., GCN 27820; Kuin
et al., GCN 27825). Preliminary photometry of the afterglow is following
Photometry of the field is following.
Date UT start t-T0 Filter Exp. OT Err. UL (3sigma)
(mid, days) (s)
2020-05-26 15:34:49 2.4721 r'(AB) 98*60 22.57 0.10 24.4
The photometry is based on the nearby stars of PS1 catalog.
PanSTARRS-PS1_id r
181072130294808209 20.4066
181072130171186332 20.9877
181082129951473104 20.1196
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