[vsnet-alert 9714] XMMSL1 J070542.7-381442

[Taichi Kato]

   This certainly deserves optical follow-up.  Have a look at this location!

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The Astronomer's Telegram                   http://www.astronomerstelegram.org 
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Posted: Fri Nov 16 01:30:01 EST 2007 -- Sat Nov 17 01:30:02 EST 2007
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ATEL #1282                                                           ATEL #1282

Title:          XMM-Newton Slew Survey discovers a new, bright X-ray transient,
                XMMSL1 J070542.7-381442
Author: A.M. Read (U. Leicester), R.D. Saxton (ESAC) and P.Esquej
                (MPE)
Queries:        amr30 at star.le.ac.uk
Posted: 16 Nov 2007;  9:52  UT
Subjects:       X-ray, Transients

ESA's XMM-Newton, in its Slew Survey mode, has detected a very bright
(53.7 ct/s in EPIC-pn [0.2-2 keV]), new transient at a position of: 
RA, Dec (J2000) = 07:05:42.7 -38:14:42   (estimated error radius: 8
arcseconds).      It was detected in an XMM-Newton Slew from 8th October
2007, and is   seen to have increased in flux over the ROSAT All-Sky Survey
(RASS)   upper limit by a factor of more than 400.      The source has
been designated the name: XMMSL1 J070542.7-381442      The XMM-Newton Slew
Survey spectrum is extremely soft, with   essentially no counts above 1keV.
This, together with the fact that   the source is quite close to the Galactic
plane and has a very large   column density out of the Galaxy (nH~1.4e21
atoms/cm^2) indicates    that the source is very likely Galactic in origin,
and perhaps very   close.      The source may have an optical counterpart
(USNO-A2.0 0450-03360039 :   Bmag=15.7 Rmag=15.9).    

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