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Possible quiescent Chandra counterpart to IGRJ17494-3030

ATel #3986; P. G. Jonker (SRON/CfA/RU), T. J. Maccarone (Southampton)
on 20 Mar 2012; 20:52 UT
Credential Certification: P.G. Jonker (pjonker@cfa.harvard.edu)

Subjects: X-ray, Black Hole, Neutron Star, Transient

Referred to by ATel #: 3989

For the GBS collaboration we report on a previous Chandra observation of the field of the currently active source IGR J17494-3030 (ATels #3984, #3985).

The Chandra observation is part of the Galactic Bulge Survey (Jonker et al. 2011), was obtained on May 13, 2008 and is about 2 ksec. long. A faint X-ray source is present at an angular distance of 2 arcminutes of the reported INTEGRAL position which has an estimated uncertainty of 1.3 arcminutes (the confidence level of this estimate has not been given, see ATel #3984). The Chandra source is CXOGBS J174918.8-302821 (entry 264 in the source list of Jonker et al. 2011). The accuracy of the Chandra source position is dominated by the boresight uncertainty of Chandra which is typically 0.6 arcseconds (at 90% confidence).

A future Swift observation will probably show if the position of this Chandra source is consistent with that of IGRJ17494-3030. If so, the accurate Chandra position will help identify an optical or near-infrared counterpart in this crowded region of the bulge.