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Spectral evolution in black hole accretion powered AGN and the cosmic X-ray backgroundIf AGN contain supermassive black holes of pregalactic origin, then the radiation emitted during their lifetime will undergo spectral evolution. For AGN black-hole-accretion disk dynamo power sources, the dynamic parameters relevant to spectral evolution are the electron crossing time in the dynamo, the electron radiative loss time, the compactness parameter, and the photon-photon pair production optical depth. It is suggested that both spectral and luminosity evolution may be required to explain the evolutionary properties of AGN.
Document ID
19880042565
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Leiter, D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Boldt, E.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1988
Subject Category
Astrophysics
Meeting Information
Meeting: Supermassive black holes
Location: Fairfax, VA
Country: United States
Start Date: October 14, 1986
End Date: October 16, 1986
Accession Number
88A29792
Distribution Limits
Public
Copyright
Other

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