Other
Scientific paper
Aug 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...377..593o&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 377, Aug. 20, 1991, p. 593-611. Research supported by NASA.
Other
27
Accretion Disks, Galactic Nuclei, Radiant Heating, Stellar Coronas, Stellar Temperature, X Ray Sources, Analytic Functions, Compton Effect, Isothermal Processes, Optical Thickness, Stellar Luminosity
Scientific paper
The structure of Compton-heated coronae above accretion disks is studied here by using analytic and numerical approaches are used here to determine the direct and scattered radiation reaching the base of the corona for a range of central source luminosities. It is found that the outer region of the corona is unaffected by multiple scattering in the interior, provided that the luminosity of the central source is sufficient below the Eddington limit. How attenuation and scattering by the corona affects the strength of chromospheric emission lines is determined, as is the condition for which the irradiation due to the central source exceeds the locally generated flux from the disk. Finally, it is shown that the stability analysis for irradiated accretion disks of Tuchman et al. is not substantially altered by the corona.
Klein Richard I.
McKee Christopher F.
Ostriker Eve C.
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