GCN Circular 27850
Subject
GRB 200524A: Assy continued optical observations
Date
2020-05-29T08:45:32Z (4 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@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 GRB 200524A (Dirirsa et al., GCN 27797; 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. 27
(UT) 17:29:53 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
Date UT start t-T0 Filter Exp. OT Err. UL (3sigma)
(mid, days) (s)
2020-05-27 17:29:53 3.55617 r'(AB) 110*60 22.80 0.17 24.4
The photometry is based on the nearby stars of PS1 catalog.