Optical/UV/X-ray Insights into the RL--RQ Dichotomy

Details Optical/UV/X-ray Insights into the RL--RQ Dichotomy Optical/UV/X-ray Insights into the RL--RQ Dichotomy

2009-10-09

arxiv.org/abs/0910.1806v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

To appear in the Proceedings of "Accretion and Ejection in AGN: A Global View" held in Como, Italy June 22-26, 2009. Editors:

Scientific paper

We explore the relationship between radio-loud (RL) and radio-quiet (RQ) quasars using a set of optical/UV/X-ray measures that are quite independent of radio measures. We find RL sources to show larger average FWHM H-beta, weaker FeII emission, no soft X-ray excess and no CIV blueshift - all characteristics manifested by a large fraction of RQ quasars (that we call Population A). We find that log L (1.4Ghz) = 31.6 [ergs/s/Hz] (or R=70) is the lower limit for RL quasars showing FRII morphology. We find no evidence for a hidden FRII population below this level. We conclude that RL sources are a distinct quasar population that may also include 30-40 percent of RQ sources which apparently show similar geometry and kinematics (what we call Population B). This RQ overlap, if not coincidental, may include inactive RL quasars as well as quasars with geometry/kinematics similar to RL sources but where RL activity is inhibited in some way (e.g. host morphology, BH spin).

Affiliated with

Also associated with

No associations

Rating

Optical/UV/X-ray Insights into the RL--RQ Dichotomy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Optical/UV/X-ray Insights into the RL--RQ Dichotomy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical/UV/X-ray Insights into the RL--RQ Dichotomy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-51951