MAXI J1847-004: Swift observation and identification with Swift J1845.7-0037
ATel #13191; J. A. Kennea (PSU), P. A. Evans, A. P. Beardmore (U Leicester), A. Bahramian (ICRAR), H. A. Krimm (NSF/USRA), P. Romano (INAF-OAB), K. Yamaoka (Nagoya U.), M. Serino (RIKEN) and H. Negoro (Nihon U.)
on 14 Oct 2019; 21:27 UT
Credential Certification: Jamie A. Kennea (kennea@astro.psu.edu)
Subjects: X-ray, Transient
At 13:22UT on October 14, 2019, Swift began a 7-tile observation of the error region of the newly discovered transient MAXI J1847-004 (ATEL #13189). We find a single bright X-ray point source in the observations, at the following coordinates: RA/Dec(J2000) = 281.47797, -0.65953, which is equivalent to:
RA(J2000) = 18h 45m 54.71s,
Dec(J2000) = -00d 39m 34.3s,
with an estimated uncertainty of 2.4 arc-seconds radius (90% confidence). This position is consistent with the location of a previously detected X-ray transient, Swift J1845.7-0037, AKA XMMSL1 J184555.4-003941 (ATEL #4130). It lies 21.5 arc-minutes from the MAXI positon, just outside the MAXI error region, however no other X-ray source is detected inside the MAXI error region, so therefore we conclude that the MAXI transient represents a new outburst of Swift J1845.7-0037.
We also note a recent elevated count rate of this source in the BAT Transient Monitor.
Scaled Map Transient Analysis for SWIFT J1845.7-0037
