2002IAUC.7968....2R

M. P. Rupen, V. Dhawan, and A. J. Mioduszewski, National Radio Astronomy Observatory, report that observations with the Very Large Array (VLA) on Sept. 9 revealed a new about 3-mJy source at 8.46 GHz at a nominal position R.A. = 16h28m47s.3, Decl. = -41o52'35" (equinox 2000.0). Although the detection is highly significant (11-sigma), the low declination, poor weather, and recent re-positioning of several of the VLA's constituent antennas combine to make the flux density uncertain to perhaps 50 percent and the position accurate to only a few arcsec. The beam size was 3".6 x 0".9 FWHM at a position angle of -7 deg. VLA observations of the same field over the past year, primarily at 8.46 GHz, have given numerous nondetections, to rms noise limits of 0.1-0.3 mJy/beam. Based on the rarity of strong, variable radio sources at this frequency, and the close (3".4) positional agreement, Rupen et al. suggest this is a radio counterpart to GSC 7861.1088 = 1RXS J162848.1-415241, proposed by Tsarevsky et al. (cf. http://vsnet. kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-campaign/msg01058.html) as a probable microquasar. Further radio, optical, infrared, and x-ray observations are urgently requested.