GCN Circular 35011
Subject
GRB 231110A: Swift-UVOT Upper Limits
Date
2023-11-13T15:10:22Z (6 months ago)
From
N. Klingler at NASA-GSFC/UMBC/CRESST II <noelklingler@gmail.com>
Via
Web form
Swift-UVOT has performed follow-up observations of the Swift-BAT-detected burst GRB 231110A (Kennea et al. GCN 34977), collecting 2.8 ks of observations between T0+8.80 ks and T0+27.45 ks. No source was detected in the UVOT data at the position of the X-ray source reported by Evans et al. (GCN 34986).
3-sigma upper limits (AB) using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) are:
Filter T_start(s) T_stop(s) Exp(s) Mag
V 8893 9216 314.67 >19.55
B 14638 15545 881.77 >21.00
U 26828 27450 604.93 >21.67
W1 25992 26822 885.58 >21.76
white 15545 15695 147.43 >21.68
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.198 in the direction of the burst (Schlegel et al. 1998).