GCN Circular 28769
Subject
GRB 201020B: follow-up observations at Konkoly
Event
Date
2020-10-24T11:11:02Z (6 years ago)
From
Jozsef Vinko at Konkoly Observatory <vinko@konkoly.hu>
J. Vinko (Konkoly/ELTE/U Szeged), A. Pal, L. Kriskovics, R. Szakats, A. Ordasi and K. Vida (Konkoly)
report on behalf of the "Transient Astrophysical Objects" project:
Follow-up observations of the optical afterglow of GRB 201020B
(Fermi team, GCN 28702; Lipunov et al. GCN 28704;
Malacaria and Meegan, GCN 28710; Ursi et al. 28714; Arimoto et al., GCN 28716;
Lipunov et al., GCN 28718; Xu et al., GCN 28719; Ridnaia et al., GCN 28723;
Belkin et al., GCN 28725; Sbarufatti et al., GCN 28740; Breeveld et al., GCN 28743;
Vinko et al. GCN 28750; Kumar et al. GCN 28753; Kann et al. GCN 28765; Belkin et al.
GCN 28768) with the 0.8m RC80 telescope at Konkoly Observatory yielded the following magnitudes
for the transient:
Date UT-mid t-T0(hr) Exp(s) Filter AB mag Err
2020-10-22 19:31:01 49.94 6 x 300 SDSS-r 20.592 0.172
2020-10-22 19:36:07 50.04 6 x 300 SDSS-i 20.566 0.264
tied to local PS1 stars.
Our data are consistent with the magnitudes reported by Belkin et al. (GCN 28768).
At the redshift of z=0.8 (Kann et al. GCN 28765) these correspond to
M ~ -22.9 absolute mag.