[vsnet-grb-info 15042] Swift trigger 600114 is not an outbursting X-ray source

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  16336
SUBJECT: Swift trigger 600114 is not an outbursting X-ray source
DATE:    14/05/28 07:57:12 GMT
FROM:    Kim Page at U.of Leicester  <klp5 at leicester.ac.uk>

K.L. Page, P.A. Evans (U. Leicester), D.N. Burrows (PSU), V. D'Elia
(ASDC) and A. Maselli (INAF-IASFPA) report on behalf of the Swift-XRT
team:

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.

This circular is an official product of the Swift-XRT team.