Swift trigger 600114 is not an outbursting X-ray source
ATel #6179; K. L. Page, P. A. Evans (U. Leicester), D. N. Burrows (PSU), V. D'Elia (ASDC) and A. Maselli (INAF-IASFPA)
on 28 May 2014; 08:05 UT
Credential Certification: Kim Page (kpa@star.le.ac.uk)
Subjects: X-ray, Transient
We have re-analysed the prompt XRT data on Swift trigger 600114 (GCN Circ.
16332), taking advantage of the event data.
The initial count rate given in GCN Circ. 16332 was based on raw data from
the full field of view, without X-ray event detection, and therefore may
have been affected by other sources in M31, as well as background hot
pixels. Analysis of the event data (not fully available at the time of the
initial circular) shows the count rate of the X-ray source identified in
GCN Circ. 16332 to have been 0.065 +/- 0.012 count s-1, consistent with
the previous observations of this source [see the 1SXPS catalogue (Evans
et al. 2014): http://www.swift.ac.uk/1SXPS/1SXPS%20J004143.1%2B413420 ].
We therefore do not believe this source to be in outburst. Instead, it was
a serendipitous constant source in the field of view of a BAT subthreshold
trigger.
