GCN Circular 10609
Subject
GRB 100414A: Swift/UVOT Observations
Date
2010-04-17T15:56:44Z (14 years ago)
From
Wayne Landsman at GSFC/SSAI <wayne.b.landsman@nasa.gov>
W. Landsman (GSFC) and J. Cannizzo (GSFC) report on behalf of the
Swift/UVOT team:
The Swift/UVOT began observations of the field of GRB 100414A 40.4 hours
after the Fermi LAT and GBM-detected trigger (Takahashi et al. GCN Circ.
10594, Foley et al., GCN Circ. 10595). We detect the source reported
by Cucchiara & Fox (GCN Circ. 10606, 10608) and Filgas et al. (GCN Circ.
10607) Combining our white observations into exposures beginning at
40.4 and 53.2 hours, we find evidence for source fading.
Filter T_start (hr) Exp(s) Mag Err
White 40.38 765 20.54 +/- 0.10
White 53.20 3531 20.86 +/- 0.06
These observations are not corrected for the expected Galactic
foreground extinction corresponding to a reddening of E_(B-V)=0.03 mag
in the direction of the burst (Schlegel et al. 1998). The photometry
is on the UVOT photometric system described in Poole et al.(2008, MNRAS,
383,627).