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)