1E 1740.7-2942 revisited: Confirmation of its identification with the core of a double sided radio jet structure

Details 1E 1740.7-2942 revisited: Confirmation of its identification with the core of a double sided radio jet structure 1E 1740.7-2942 revisited: Confirmation of its identification with the core of a double sided radio jet structure

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993adspr..13..611c&link_type=abstract

Advances in Space Research (ISSN 0273-1177), vol. 13, no. 12, p. (12)611-(12)616

Astronomy and Astrophysics

Astronomy

1

Gamma Ray Astronomy, Milky Way Galaxy, Radio Astronomy, Radio Jets (Astronomy), X Ray Astronomy, X Ray Sources, Light Curve, Mir Space Station, Rosat Mission, Sky Surveys (Astronomy), Spaceborne Telescopes, Very Large Array (Vla)

Scientific paper

After more than two years of successful in-orbit operations, the gamma-ray coded aperture SIGMA telescope has accumulated 800 hours of live-time observations of the Galactic Center region, including the remarkable hard source identified with the X-ray source 1E 1740.7-2942. The long-term behavior of the soft gamma-ray emission of 1E 1740.7-2942, as determined from the SIGMA survey, supplemented with previously available soft gamma-ray data, leads to its identification with a singular radio source, which consists of a double sided radio jet emanating from a compact variable core whose variability is correlated with that of the soft gamma-ray source. The compact radio core, which lies well inside the improved soft gamma-ray (40-150 keV) error circle (27 sec radius) derived from the high-resolution SIGMA survey, is also inside the ROSAT and TTM error circle derived respectively in the soft and hard X-ray bands.

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