[vsnet-alert 6571] (fwd) new X-ray transient, XTE J1650-500

[Daisaku Nogami <nogami@kwasan.kyoto-u.ac.jp>]

The RXTE All-Sky Monitor has detected X-ray emission from a new
source, XTE J1650-500. The ASM position (equinox 2000.0) is centered
at R.A. = 16h 50m 00s, Decl. = -50 deg. 00', with an estimated uncertainty
of 6'. The first detection was made on September 5.637, with an X-ray
intensity (2-12 keV) of 0.14(.02) Crab, rising to 0.24(.01) Crab on
Sept. 6.432 and 0.27(.01) Crab on Sept. 6.896. The ASM detections in 
the 3 energy bands suggest X-ray colors consistent with a "soft X-ray 
transient", rather than an X-ray pulsar.  Observations at radio, optical, 
and IR wavelengths are needed as soon as possible.

Ron Remillard (M.I.T.), reporting for the ASM team 
at M.I.T. and NASA Goddard Space Flight Center

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