Journal
ASTROPHYSICAL JOURNAL
Volume 748, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/748/1/49
Keywords
galaxies: active; gamma rays: galaxies; quasars: general; surveys
Categories
Funding
- STFC [ST/H002456/1]
- NASA [NNX09AW30G, NXX10AU09G, NAS5-00147]
- [AST-0808050]
- STFC [PP/E003427/1, ST/I003673/1, ST/G004331/1, ST/H002456/1] Funding Source: UKRI
- Science and Technology Facilities Council [PP/E003427/1, ST/I003673/1, ST/G004331/1, ST/H002456/1] Funding Source: researchfish
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1109911] Funding Source: National Science Foundation
- NASA [104076, NNX09AW30G] Funding Source: Federal RePORTER
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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.
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