GCN Circular 32413
Subject
GRB220714B: UVOT detections
Event
Date
2022-07-18T18:49:00Z (3 years ago)
From
Paul Kuin at MSSL <npkuin@gmail.com>
N. P. M. Kuin (UCL-MSSL) and S. Laha (NASA/UMCP) report on behalf of the
Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 220714B
3628 s after the BAT trigger (Laha et al, GCN Circ. 32393) and
detected a bright afterglow (Marshall & Laha, GCN Circ. 32396).
Marshal and Laha provided the UVOT position of GRB 220714B.
Perhaps due to a bright nearby star in the field, there were some
exposures which were cut short, but in this report we include those
using the UVOT photometric system (Breeveld et al. 2011, AIP Conf.
Proc. 1358, 373):
Filter Time Exp(s) Mag
white 150 55 18.0 +/- 0.1
white 3628 147 16.53+/- 0.03
v 3810 197 16.79+/- 0.09
m2 4115 197 16.42+/- 0.08
w1 4220 197 16.41+/- 0.06
u 4425 197 16.33+/- 0.04
b 4630 197 17.26+/- 0.05
white 4835 197 16.86+/- 0.03
w2 4992 102 17.16+/- 0.12
v 5897 18 17.4 +/- 0.6
The magnitudes in the table are not corrected for the Galactic
extinction due to the reddening of E(B-V) = 0.032 in the direction of
the burst (Schlegel et al. 1998).