SPECTROSCOPY OF BROAD-LINE BLAZARS FROM 1LAC

Shaw, Michael S.; Romani, Roger W.; Cotter, Garret; Healey, Stephen E.; Michelson, Peter F.; Readhead, Anthony C. S.; Richards, Joseph L.; Max-Moerbeck, Walter; King, Oliver G.; Potter, William J.

Abstract

We report on optical spectroscopy of 165 flat spectrum radio quasars (FSRQs) in the Fermi 1LAC sample, which have helped allow a nearly complete study of this population. Fermi FSRQs show significant evidence for non-thermal emission even in the optical; the degree depends on the gamma-ray hardness. They also have smaller virial estimates of hole mass than the optical quasar sample. This appears to be largely due to a preferred (axial) view of the gamma-ray FSRQ and non-isotropic (H/R similar to 0.4) distribution of broad-line velocities. Even after correction for this bias, the Fermi FSRQs show higher mean Eddington ratios than the optical population. A comparison of optical spectral properties with Owens Valley Radio Observatory radio flare activity shows no strong correlation.

Más información

Título según WOS: ID WOS:000301347500049 Not found in local WOS DB
Título de la Revista: ASTROPHYSICAL JOURNAL
Volumen: 748
Número: 1
Editorial: IOP PUBLISHING LTD
Fecha de publicación: 2012
DOI:

10.1088/0004-637X/748/1/49

Notas: ISI