NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-18 T12:04:45 PDT
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For refcode 1994ApJ...434..435P:
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Copyright by American Astronomical Society. Reproduced by permission
1994ApJ...434..435P ACTIVE GALACTIC NUCLEI. V. X-RAY VARIABILITY AND THE BLACK HOLE CLUSTER PARADIGM A. G. PACHOLCZYK Steward Observatory, University of Arizona, Tucson, AZ 85721 AND W. R. STOEGER, S.J. Vatican Observatory Research Group, Steward Observatory, University of Arizona, Tucson, AZ 85721 Received 1993 September 16; accepted 1994 March 28 ABSTRACT A random superposition of elementary luminosity bursts of rectangular or triangular shape produces X-ray luminosity flicker curves characterized by features corresponding to those observed in the X-ray- variable Seyfert galaxies and other active galactic nuclei. Such luminosity events could be produced by accretion processes resulting from tidal disruption and consumption of stars by small (~1 M_sun_) black holes, or much more frequently from such holes passing and disrupting accretion disks belonging to large holes in a nuclear cluster. Subject headings: black hole physics - galaxies: active - galaxies: nuclei - galaxies: Seyfert - X-rays: galaxies
Retrieve 22 NED objects in this reference.
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