Limits of X-ray variability in active galactic nuclei

Details Limits of X-ray variability in active galactic nuclei Limits of X-ray variability in active galactic nuclei

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.320..421b&link_type=abstract

Nature (ISSN 0028-0836), vol. 320, April 3, 1986, p. 421-423.

Physics

136

Active Galactic Nuclei, Quasars, Seyfert Galaxies, X Ray Sources, Bl Lacertae Objects, Electron-Positron Pairs, Luminosity, Pair Production, Relativistic Plasmas, Secular Variations

Scientific paper

The authors show that there is a significant correlation between the X-ray luminosity and timescale of X-ray variability for Seyfert galaxies and quasars. They interpret this as evidence that the emitting plasma is near the limit of being dominated by electron-positron pairs. BL Lac objects do not follow this pattern; this may be due either to relativistic beaming or to the differing importance of the pair production process.

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