Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997stin...9932288w&link_type=abstract
Technical Report, Stanford Univ. Stanford, CA United States Dept. of Physics
Astronomy and Astrophysics
Astronomy
Accretion Disks, Black Holes (Astronomy), Signatures, Neutron Stars, Eigenvectors, Angular Momentum, Analogs, Observation, Luminosity, Gravitation, Frequencies
Scientific paper
We will summarize some results of relativistic calculations of the eigenfunctions and eigenfrequencies of normal modes of oscillation trapped within the inner region of thin accretion disks by non-Newtonian gravitational properties of a black hole (or a compact, weakly-magnetized neutron star). The focus will be on the most observable, robust, and best-studied class: the analogue of (internal) gravity modes in stars. The frequency of the peak in the power spectrum of the luminosity modulations produced by the lowest modes is almost independent of the properties of the accretion disk. A feature with the required properties has recently been observed in at least one black hole candidate by the RXTE satellite, which produces a relation between the angular momentum and mass of the black hole.
Begelman Mitchell C.
Lehr Dana E.
Nowak Maciej A.
Silbergleit Alexander S.
Wagoner Robert V.
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