XMMSL1 J152835.4+593754 - a new X-ray transient
ATel #1361; Richard Saxton (ESAC), Andy Read (U. Leicester), P. Esquej (MPE), M. Freyberg (MPE)
on 18 Jan 2008; 14:39 UT
Credential Certification: Richard Saxton (richard.saxton@sciops.esa.int)
Subjects: X-ray, Request for Observations, Transient
We report the detection of an X-ray transient, XMMSL1 J152835.4+593754,
at a position RA=15h28m35.4s, DEC=+59d37m54s (J2000, error radius 8")
by the XMM-Newton slew survey on December 21st 2007.
The count rate
is 0.6 c/s in the EPIC-pn camera (0.2-2 keV), which equates to a flux
28 times higher than the 2-sigma upper limit from the ROSAT All Sky
Survey (RASS) at the same position.
The source position is coincident, within the errors, with the high proper
motion star, LSPM J1528+5937, (USNO B-1 1496-0226846, B=18.77, V(est)=17.1,
R=15.7, I=13.3) whose J2000, Ep=J2000 position is
RA: 15 28 35.26 , Dec: +59 37 58.9
The proper motion of LSPM J1528+5937 is dRA=-0.226 arcsec/yr,
dDec=0.047 arcsec/yr.
We tentatively identify the X-ray flare with LSPM J1528+5937 and encourage
follow-up observations.
