Friday, January 6, 2012

1201.0999 (Michael S. Shaw et al.)

Spectroscopy of Broad Line Blazars from 1LAC    [PDF]

Michael S. Shaw, Roger W. Romani, Garret Cotter, Stephen E. Healey, Peter F. Michelson, Anthony C. S. Readhead, Joseph L. Richards, Walter Max-Moerbeck, Oliver G. King, William J. Potter
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 FSRQ 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 ~ 0.4) distribution of broad-line velocities. Even after correction for this bias, the Fermi FSRQ 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.
View original: http://arxiv.org/abs/1201.0999

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