GCN Circular 32656
Subject
GRB 221009: Swift/UVOT Detection
Date
2022-10-10T12:41:35Z (2 years ago)
From
Paul Kuin at MSSL <npkuin@gmail.com>
N. P. M. Kuin (UCL-MSSL) and S. Dichiara (PSU) report on behalf
of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of
GRB 221009 179 s after the BAT trigger (Dichiara et al.,
GCN Circ. 32632, and 32633). This GRB was initially reported as being
a new bright hard X-ray transient and named SwiftJ1913.1+1946.
Further analysis shows this is a GRB (Kennea et al, GCN Circ.
32635, and 32651).
The preliminary UVOT position was reported in the Dichiara et al. GCN.
The GRB was also detected by Fermi (Veres et al. GCN Circ 32636;
Bissaldi et al. GCN Circ. 32637; Lesage etal. GCN Circ. 32642),
IPN (Svinkin et al., GCN Circ. 32641); Agile (Ursi et al. GCN
Circ 32650). A redshift of 0.151 has been reported by de Ugarte
Postigo et al. (GCN Circ. 32648), and optical detections were
reported also (MASTER: Lipunov et al., GCN Circ. 32634 and 32639;
Liverpool Telescope photometry and spectrum: Perley GCN Circ
32638; VVS: Broens, GCN Circ. 32640; BOOTES-2/TELMA: Hu et al., GCN
Circ. 32644; Mondy: Belkin et al. GCN Circ. 32645; MeerLICHT: de Wet et al.
GCN Circ. 32646