New X-ray Transient XTE J1748-361 (may be A1744-36)
ATel #204; Ron Remillard, Alan Levine, Dacheng Lin (MIT) and Don Smith (U Michigan)
on 7 Nov 2003; 19:31 UT
Distributed as an Instant Email Notice Transients
Credential Certification: Ron Remillard (rr@space.mit.edu)
Subjects: X-ray, Transient
Observations with the RXTE All-Sky Monitor reveal X-ray emission
from a source at (J2000, degrees) 266.97, -36.14 (uncertainty 0.2
degrees at 90% confidence). The source was first detected on Nov. 3
2003, at a flux (2-12 keV) of 42 (7) mCrab, increasing to a range of
100-120 mCrab (daily averages) during Nov. 4-6. The source position
is consistent with that of a 1976 transient from the Ariel V mission
(A1744-36). This association requires an improved source
position, given the 7 degree offset from the Galactic center.
The current X-ray source shows a spectrum similar to LMXBs or black hole
transients, but not the classical accretion-powered pulsars.
