Is the Galactic Centre gamma-ray source 1E1740.7 - 2942 accreting from a molecular cloud?

Details Is the Galactic Centre gamma-ray source 1E1740.7 - 2942 accreting from a molecular cloud? Is the Galactic Centre gamma-ray source 1E1740.7 - 2942 accreting from a molecular cloud?

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991natur.353..234b&link_type=abstract

Nature (ISSN 0028-0836), vol. 353, Sept. 19, 1991, p. 234-237.

Computer Science

87

Galactic Nuclei, Gamma Rays, Milky Way Galaxy, Molecular Clouds, Stellar Mass Accretion, X Ray Sources, Line Of Sight, Millimeter Waves, Radio Observation

Scientific paper

The French Sigma experiment has observed a day-long burst of narrow-band gamma-rays from within 1.5 arcmin of the known X-ray source 1E1740.7 - 2942 about 50 arcmin from Sgr A West, which contains the dynamical center of the Galaxy. Millimeter-wavelength observations are reported here which show that this variable X-ray source lies on a line of sight of the dense 100,000 solar mass molecular cloud G 0.86 - 0.08, near the Galactic center. It is suggested that the gamma-ray source, probably a compact object, possibly a black hole, is accreting dense gas directly from the molecular cloud.

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