B. P. Miller, C. A. Welling, W. N. Brandt, R. R. Gibson
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.
View original:
http://arxiv.org/abs/1201.2676
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