GCN Circular 15721
Subject
GRB 140110A: Swift XRT observations
Date
2014-01-11T12:03:01Z (11 years ago)
From
Alessandro Maselli at INAF/IASF Palermo <maselli@ifc.inaf.it>
A. Maselli (INAF-IASFPA), S. Campana (INAF-OAB), D. Malesani (DARK/NBI)
and P. A. Evans (U. Leicester) report on behalf of the Swift team:
Swift-XRT has observed the error circle of the Fermi/LAT GRB 140110A
(Bissaldi et al., GCN 15714), also detected by Fermi/GBM (von Kienlin &
Connaughton, GCN 15716), in a series of observations tiled on the sky.
The total exposure time is 12.8 ks spread over 7 fields; the maximum
exposure within the sky observed was 3.9 ks. The observations started
28.4 ks after the Fermi/LAT trigger. Within these data there are two
objects (source #1 and source #3) which are in the 1RXS catalogue and
five sources which are not catalogued in X-rays. At the present time we
cannot be sure which of these, if any, is the afterglow. However, we
note that the light curve of source #2, with a mean count rate of (1.23
� 0.27) x 10^-2 ct s^-1, suggests evidence of decay.
Source details:
Source 1
RA: 28.58425 = 01h 54m 20.22s (J2000)
Dec: -36.49342 = -36d 29' 36.3" (J2000)
Err: 4.4" (radius, 90% confidence)
Exposure time: 1.7 ks
Online products:
http://www.swift.ac.uk/xrt_products/TILED_GRB00023/index_1.php
Source 2
RA: 28.53253 = 01h 54m 7.81s (J2000)
Dec: -36.12000 = -36d 07' 12.0" (J2000)
Err: 5.4" (radius, 90% confidence)
Exposure time: 2.6 ks
Online products:
http://www.swift.ac.uk/xrt_products/TILED_GRB00023/index_2.php
Source 3
RA: 28.63188 = 01h 54m 31.65s (J2000)
Dec: -36.70189 = -36d 42' 06.8" (J2000)
Err: 5.4" (radius, 90% confidence)
Exposure time: 1.5 ks
Online products:
http://www.swift.ac.uk/xrt_products/TILED_GRB00023/index_3.php
Source 4
RA: 29.24134 = 01h 56m 57.92s (J2000)
Dec: -36.06453 = -36d 03' 52.3" (J2000)
Err: 6.2" (radius, 90% confidence)
Exposure time: 1.6 ks
Online products:
http://www.swift.ac.uk/xrt_products/TILED_GRB00023/index_4.php
Source 5
RA: 28.36418 = 01h 53m 27.40s (J2000)
Dec: -36.32146 = -36d 19' 17.3" (J2000)
Err: 5.7" (radius, 90% confidence)
Exposure time: 1.7 ks
Online products:
http://www.swift.ac.uk/xrt_products/TILED_GRB00023/index_5.php
Source 6
RA: 28.46195 = 01h 53m 50.87s (J2000)
Dec: -36.04399 = -36d 02' 38.4" (J2000)
Err: 6.2" (radius, 90% confidence)
Exposure time: 1.0 ks
Online products:
http://www.swift.ac.uk/xrt_products/TILED_GRB00023/index_6.php
Source 7
RA: 28.94482 = 01h 55m 46.76s (J2000)
Dec: -36.43079 = -36d 25' 50.8" (J2000)
Err: 6.2" (radius, 90% confidence)
Exposure time: 2.7 ks
Online products:
http://www.swift.ac.uk/xrt_products/TILED_GRB00023/index_7.php
This circular is an official product of the Swift-XRT team.