Centre for Astrophysics, Guangzhou University.
Abstract
In this talk, we will present the classification of Fermi blazars based on the synchrotron peak frequency in the spectral energy distributions (SEDs) of Fermi blazars and the discussions on “blazer sequence”. We will show the variability properties of blazars over different time scales and the beaming effect. We also show our optical monitoring of blazars and their periodicity analysis results.