Computer Science – Numerical Analysis
Scientific paper
Sep 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...289...45s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 289, no. 1, p. 45-53
Computer Science
Numerical Analysis
6
Accretion Disks, Active Galactic Nuclei, Black Holes (Astronomy), Gas Pressure, Radiative Transfer, Spectral Energy Distribution, Ultraviolet Spectra, Extinction, Gravitation, Luminosity, Mass Flow Rate, Numerical Analysis, Temperature Distribution, Viscosity
Scientific paper
We have calculated UV/EUV (300 A less than or = lambda less than or = 1500 A) continuous energy distributions of accretion disks in the centers of active galactic nuclei (AGNs) for disk luminosities in the range 0.1 LEdd and central masses ranging from 108 solar mass to 1010 solar mass. The vertical gas pressure structure of the disk is obtained analytically, the temperature stratification and the resulting continuum radiation fields are calculated numerically. We show that weak Lyman edges are an intrinsic feature of such disks. The strength of the H I Lyman edge decreases for increasing accretion rate and fixed mass of the central black hole. It increases for increasing central mass and fixed luminosity in terms of the Eddington luminosity.
Hauschildt Peter. H.
Störzer H.
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