Broad Absorption Line Variability in Radio-Loud Quasars

Details Broad Absorption Line Variability in Radio-Loud Quasars Broad Absorption Line Variability in Radio-Loud Quasars

2012-01-12

arxiv.org/abs/1201.2676v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

2 pages, 1 figure, for proceedings of the conference "AGN Winds in Charleston", October 2011

Scientific paper

We present preliminary results from an investigation into broad absorption line (BAL) variability within a sample of 41 radio-loud quasars (RLQs). Using 28 new Hobby-Eberly Telescope (HET) spectra along with earlier Sloan Digital Sky Survey (SDSS) or other archival data, we generate a total set of 50 pairs of BAL equivalent width measurements. Absorption variability in BAL RLQs typically consists of modest changes in the depth of trough segments, and variability is more common on longer rest-frame timescales; these tendencies are similar to previous findings for BAL radio-quiet quasars (RQQs). BAL variability in RLQs does not show any obvious dependence upon radio luminosity or loudness, but there is suggestive support for greater fractional variability within lobe-dominated RLQs.

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