Long-term temporal behavior of 1E 1740.7-2942

Details Long-term temporal behavior of 1E 1740.7-2942 Long-term temporal behavior of 1E 1740.7-2942

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apjs...92..401c&link_type=abstract

The Astrophysical Journal Supplement Series, vol. 92, no. 2, p. 401-403

Astronomy and Astrophysics

Astronomy

3

Black Holes (Astronomy), Galactic Nuclei, Gamma Ray Astronomy, Stellar Radiation, Flux (Rate), Milky Way Galaxy, Stellar Mass Accretion, Temporal Distribution

Scientific paper

After more than 3 years of performances, the French gamma-ray telescope SIGMA on board the Russian spacecraft Grannat has recorded approximately 1000 hr of data on the Galactic center (GC). This survey of the GC is the lengthiest ever made with the same instrument in this energy range, and it allows a consistent study of the singular source 1E 1740.7-2942. These unprecedented observations, combined with previous ones, reveal a complex temporal behavior of 1E 1740.7-2942. These observational results imply some constraints on the nature of this object.

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