New Outburst of A1744-36 = XTE J1748-361
ATel #567; J. H. Swank (NASA/GSFC) & C. B. Markwardt (Univ. MD and NASA/GSFC)
on 15 Jul 2005; 21:24 UT
Distributed as an Instant Email Notice Request For Observations
Credential Certification: Jean Swank (swank@milkyway.gsfc.nasa.gov)
Subjects: Radio, Infra-Red, Optical, X-ray, Request for Observations, Binary, Black Hole, Neutron Star, Transient
The transient A1744-36 = XTE J1748-361 is again in outburst. RXTE
PCA scans have observed 2-10 keV fluxes of 2.7(0.6), 12.6(0.8),and
23.8(0.4) mCrab on Jul 7.354, Jul 10.941 and Jul 14.04 (UT),
respectively.
In Novemeber 2003 and in April 2004, PCA scans of the Galactic
Bulge saw outbursts from a source consistent with the positions of the
discovery observations by Ariel V and the RXTE ASM (Atels # 265, #255,
#204). During the April outburst, Steeghs et al. (Atel #267)
discovered a bright optical transient coincident with a Chandra X-ray
source and a VLA radio source, establishing the likely identity of one
X-ray transient. (A second candidate X-ray and radio source had been
shown in Atel #210 to be a background AGN.)
Radio, optical, and hard X-ray (Atel # 266) counterparts have
previously been seen, but additional observations at all wavelengths
would be useful to better establish the nature of the source.
