H1743-322 re-appears
ATel #575; M. P. Rupen (NRAO/GSFC), A. J. Mioduszewski, V. Dhawan (NRAO)
on 11 Aug 2005; 16:57 UT
Distributed as an Instant Email Notice Transients
Credential Certification: Michael P. Rupen (mrupen@nrao.edu)
Subjects: Radio, Infra-Red, Optical, X-ray, Binary, Black Hole, Transient
Referred to by ATel #: 576, 593
Very Large Array (VLA) observations of the black hole candidate binary
H1743-322 = IGR J1746-3213 = XTE J17464-3213 (e.g., ATel #301, #314)
show that the central radio source has re-appeared. Data taken on August 7,
2005 (MJD 53589.25) at 4.86 GHz gave a clear detection with a flux density
of 0.59 +/- 0.07 mJy; data taken at the same frequency on June 11
(MJD 53532.30) gave only an upper limit, with a nominal flux density at the
source position of 0.03 +/- 0.04 mJy/beam. Further VLA observations are
planned -- see
http://www.aoc.nrao.edu/~mrupen/XRT/vla_aug05.html
for the likely dates. Given the activity seen in previous outbursts,
we urge parallel observations at other wavelengths, particularly in the
optical/IR and X-ray bands.
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