GCN Circular 27820
Subject
GRB 200524A: Kitab observatory afterglow observations
Event
Date
2020-05-25T15:37:06Z (6 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
S. Belkin (IKI), A. Novichonok (Petrozavodsk State University, KIAM), A.
Pozanenko (IKI), E. Mazaeva (IKI), A. Volnova (IKI), I. Molotov
(KIAM), Sh. Ehgamberdiev (UBAI) report on behalf of IKI-GRB-FuN:
We observed Fermi-LAT detected localization area of 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 Kitab-ISON RC-36 telescope
starting on 2020-05-24 (UT) 19:07:41. In a stacked image in Clear filter
(CR) we marginally detected optical afterglow discovered by ZTF (Ho et
al., GCN 27799) and confirmed by several observations (Kumar et al. GCN
27800; (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). Preliminary photometry is following
Date, UT start, t-T0, Exp., Filter, OT, Err., UL
(mid, days)
2020-05-24 19:07:41 0.60673 60*60 CR 20.48 0.25 21.0
The photometry is based on nearby USNO-B1.0 stars
USNO-B1.0_id R2
1508-0206198 15.78
1509-0204466 16.48
1509-0204434 16.53