Basic properties of Fermi blazars and the "blazar sequence"

Abstract

By statistically analyzing a large sample which includes blazars of Fermi detection (FBs) and non-Fermi detection (NFBs), we find that there are significant differences between FBs and NFBs for redshift, black hole mass, jet kinetic power from "cavity" power, broad-line luminosity, and ratio of core luminosity to absolute V-band magnitude ($R_{\mathrm{v}}$), but not for ratio of radio core to extended flux ($R_{\mathrm{c}}$) and Eddington ratio. Compared with NFBs, FBs have larger mean jet power, $R_{\mathrm{c}}$ and $R_{\mathrm{v}}$ while smaller mean redshift, black hole mass, broad-line luminosity. These results support that the beaming effect is main reason for differences between FBs and NFBs, and that FBs are likely to have a more powerful jet. For both Fermi and non-Fermi blazars, there are significant correlations between jet power and the accretion rate (traced by the broad-emission-lines luminosity), between jet power and black hole mass; for Fermi blazars, the black hole mass does not have significant influence on jet power while for non-Fermi blazars, both accretion rate and black hole mass have contributions to the jet power. Our results support the "blazar sequence" and show that synchrotron peak frequency (${\nu }_{\mathrm{peak}}$) is associated with accretion rate but not with black hole mass.

13 pages, 1 table, 13 figures, accepted for publication in MNRAS. arXiv admin note: text overlap with arXiv:1001.0731 by other authors

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• Scale invariant jets: from blazars to microquasars