VLA observations of the hard X-ray sources 1E1740.7-2942 and GRS1758-258 (original) (raw)

Astron Astrophys Suppl Series, 1993

Abstract

We report the identification of the radio counterpart of 1E1740.7-2942 and the detection of a double radio jet emanating from it. The jet is produced by synchrotron emission from charged particules streaming out from the high energy source. The compact radio source at the center of the double jet is time variable in flux and spectral index. We find that the changes in radio flux are correlated with the variations at hard X-rays observed by SIGMA. After September 1991 the radio flux of the compact source increased with the enhancement in hard X-ray activity. It appears that the central synchrotron source is self-absorbed during the high states of 1E1740.7-2942. Recent observations of GRS1768-258 reveal, as in 1E1740.7-2942, the presence of another triple radio source, whose central component is variable and falls inside the error circle (10 arcsec of radius) of ROSAT.

Jacques PAUL hasn't uploaded this paper.

Let Jacques know you want this paper to be uploaded.

Ask for this paper to be uploaded.