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Paper: The variability of a large sample of quasars
Volume: 21, The Space Distribution of Quasars
Page: 67
Authors: Hook, I. M.; McMahon, R. G.; Boyle, B. J.; Irwin, M. J.
Abstract: The variability properties of a sample of approximately 300 quasars near the South Galactic Pole (SGP) have been studied. Quasars of high luminosity show significantly less variation than those with low luminosity. A similar, though much weaker, trend with redshift was found, lower redshift quasars varying proportionally more than high redshift quasars. The observed trends are a consequence of an intrinsic dependence of quasar variability on luminosity combined with the effects of time-dilation and have strong implications for quasar samples selected solely on variability.
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