GCN Circular 19205
Subject
GRB 160310A: A further Swift-XRT observation, no afterglow detected
Date
2016-03-17T15:50:36Z (9 years ago)
From
Alessandro Maselli at INAF/IASF Palermo <maselli@ifc.inaf.it>
A. Maselli (INAF-IASFPA) and P. A. Evans (U. Leicester) report on behalf
of the Swift-XRT team:
On 2016 March 16, Swift-XRT has carried out a further observation of the
field of GRB 160310A detected by Fermi (Vianello et al., GCN Circ.
19158; Toelge and Hui, GCN Circ. 19161), collecting 4.0 ks of data from
T0+569 ks to T0+599 ks. The X-ray source reported by Gibson et al. (GCN
Circ. 19162) is still detected with a count rate of (5.5+/-1.8)E-03
ct/s, showing no evidence of fading. Therefore, this source is not
related to the GRB. The 3-sigma upper limit for the observation carried
out between T0+40.3 ks and T0+46.7 ks, computed at the center of the
Fermi-LAT error circle, is 3.8E-03 ct/s. We conclude that no afterglow
has been identified by Swift-XRT for GRB 160310A.
This circular is an official product of the Swift-XRT team.