The effect of radiation pressure on accretion disks around black holes

Journal Article · Sat May 15 04:00:00 EDT 1976 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/154384· OSTI ID:7358241

Maraschi, L; Reina, C; Treves, A

Stationary disk accretion onto a black hole is studied for high accretion rates M> or =M=2r/sub 0/L/subE//GM (L/subE/ is the Eddington luminosity) for which the dynamic effect of radiation pressure is important. The rotation of the disk is not assumed to be Keplerian but is considered as an unknown in the Newtonian dynamic equation. The problem is reduced to a set of two differential equations which are solved numerically. It is found that stationary solutions without mass-outflow exist for M>M/subc/. The radiated luminosity, however, is always of the order of the Eddington luminosity. For increasing accretion rates, the kinetic energy swallowed by the hole and the size of the radiating region increase. (AIP)

• Research Organization: Istituto di Fisica dell'Universita
• OSTI ID: 7358241
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 206:1; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
640103 -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BLACK HOLES
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
ENERGY
KINETIC ENERGY
LUMINOSITY
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATION PRESSURE
STAR ACCRETION
STAR EVOLUTION