MAXI J1749-310: Swift/XRT localization consistent with GRS 1747-312
ATel #13157; J. A. Kennea (PSU), A. Bahramian (MSU), P. A. Evans, A. P. Beardmore (U Leicester), H. A. Krimm (CRESST/GSFC/USRA), P. Romano (INAF-IASFPA), K. Yamaoka (Nagoya U.), M. Serino (RIKEN), H. Negoro (Nihon U.)
on 2 Oct 2019; 17:09 UT
Credential Certification: Jamie A. Kennea (kennea@astro.psu.edu)
Subjects: X-ray, Transient
Referred to by ATel #: 13192
At 12:49UT on October 2nd, 2019, Swift performed a target-of-opportunity observation covering the error region of the recently discovered transient, MAXI J1747-310 (ATEL #13154). Observations consist of 7-tile pattern with ~200s exposure per tile in Photon Counting mode. We find a single bright point source in the observations, at the following coordinates: RA/Dec(J2000) = 267.69521, -31.27517, which is equivalent to:
RA(J2000) = 17h 50m 46.8s
Dec(J2000) = -31d 16m 30.6s
with an estimated uncertainty of 3.7 arc-seconds radius (90% confidence). As suggested by ATEL #13155, this source is consistent with the location of GRS 1747-312, although we note that we cannot directly confirm that this is the same source, due to the possibility of source confusion with another transient in the globular cluster Terzan 6. Further observations will be performed to observe the expected eclipse ingress/egress times for GRS 1747-312, to confirm the identity of this transient.
