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Record 1 of 6158
Isothermal, Compton-heated coronae above accretion disks
External Online Source: doi:10.1086/170388
Author and Affiliation:
Ostriker, Eve C.(California Univ., Berkeley, CA, United States)
Mckee, Christopher F.(California, University, Berkeley, United States)
Klein, Richard I.(California, University, Berkeley)
Abstract: 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.
Publication Date: Aug 20, 1991
Document ID:
19910063851
(Acquired Nov 28, 1995)
Accession Number: 91A48474
Subject Category: ASTROPHYSICS
Document Type: Journal Article
Publication Information: Astrophysical Journal, Part 1 (ISSN 0004-637X); 377; 593-611
Publisher Information: United States
Contract/Grant/Task Num: NSF AST-89-18573
Financial Sponsor: NASA; United States
Organization Source: California Univ.; Berkeley, CA, United States
Lawrence Livermore National Lab.; Livermore, CA, United States
Description: 19p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ACCRETION DISKS; GALACTIC NUCLEI; RADIANT HEATING; STELLAR CORONAS; STELLAR TEMPERATURE; X RAY SOURCES; ANALYTIC FUNCTIONS; COMPTON EFFECT; ISOTHERMAL PROCESSES; OPTICAL THICKNESS; STELLAR LUMINOSITY
Imprint And Other Notes: Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 377, Aug. 20, 1991, p. 593-611. Research supported by NASA.
Miscellaneous Notes: Research supported by NASA
Availability Source: Other Sources
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