PHL 1811 Analogs: A Population of X-ray Weak Quasars

Details PHL 1811 Analogs: A Population of X-ray Weak Quasars PHL 1811 Analogs: A Population of X-ray Weak Quasars

2012-01-17

arxiv.org/abs/1201.3627v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

2 pages, 1 figure. Conference proceedings for "AGN Winds in Charleston", Charleston, SC, Oct. 15-18, 2011. To be published by

Scientific paper

We report on a population of X-ray weak quasars with similar UV emission-line properties to those of the remarkable quasar PHL 1811. All radio-quiet PHL 1811 analogs are notably X-ray weak by a mean factor of ~13, with hints of heavy X-ray absorption. Correlations between the X-ray weakness and UV emission-line properties suggest that PHL 1811 analogs may have extreme wind-dominated broad emission-line regions (BELRs). We propose an AGN geometry that can potentially unify the PHL 1811 analogs and the general population of weak-line quasars.

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