Stellar destruction by a giant black hole in the nuclei of galaxies

Details Stellar destruction by a giant black hole in the nuclei of galaxies Stellar destruction by a giant black hole in the nuclei of galaxies

Oct 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985lastr..99..429l&link_type=abstract

L'Astronomie (ISSN 0004-6302), vol. 99, Oct. 1985, p. 429-435. In French.

Astronomy and Astrophysics

Astronomy

Black Holes (Astronomy), Celestial Mechanics, Galactic Evolution, Galactic Nuclei, Stellar Evolution, Accretion Disks, Active Galactic Nuclei, Gravitational Fields, Interstellar Matter, Stellar Motions, Thermonuclear Reactions, Tides

Scientific paper

The characteristics of sources of the tremendous energy emitted by active galactic nuclei, which radiate more energy than the Galaxy from regions no larger than the solar system, are discussed. General relativity and quantum mechanics predict a greater energy output from a gravitational source than a thermonuclear source. The presence of a black hole cannot be detected directly at electromagnetic wavelengths. However, X-ray and other data have supported the presence of massive gravitational anomalies in Cygnus X1, LMC X3 and active galactic nuclei. The data arise from the intereaction of black holes with their environment, i.e., gas accretion and tidal forces on stars. The latter occurs when stars enter the Roche lobe of a black hole. Giant black holes accelerate infalling stars to relativistic velocities, exposing the accelerated stars to increased chances of collisions with other stars or disruption by tidal forces. Stars can deform into pancakes near a black hole and become supercompressed and thereby explosively superheated. The changes form heavy elements which could be detected spectroscopically.

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