2000/11/03 by D. Trevese, Trevese, D., F. Vagnetti +1
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0011076
3 pages, 3 figures, Guillermo Haro Advanced Lectures on the Starburst-AGN Connection, Tonantzintla, Mexico, June 26-30 2000
arxiv created 2000/11/03 · arxiv updated 2009/12/01
In previous studies we have shown that the optical variability of quasars increases, on average, with redshift. We explained this dependance in terms of a hardening of the spectrum during bright phases, coupled with the increase of the rest-frame frequency for increasing redshift. We re-analize now these correlations on the basis of new light curves of PG quasars, recently published by the Wise Observatory group.