Long-Timlescale X-ray Variability of BAL and Mini-BAL Quasars
John Timlin, W. N. Brandt, and Shifu Zhu
TL;DR
This study analyzes the X-ray variability over 0.1-5 years in a large, unbiased sample of BAL and mini-BAL quasars, finding their variability similar to typical quasars, challenging previous assumptions.
Contribution
It provides the largest uniform analysis of X-ray variability in BAL and mini-BAL quasars, showing their variability is comparable to non-BAL quasars.
Findings
BAL and mini-BAL quasars have similar X-ray variability amplitudes to typical quasars.
The variability distribution is statistically indistinguishable between these populations.
Results suggest similar underlying physical processes in different quasar types.
Abstract
We investigated the rest-frame 0.1-5 year X-ray variability properties of an unbiased and uniformly selected sample of 24 BAL and 35 mini-BAL quasars, making it the largest representative sample used to investigate such variability. We find that the distributions of X-ray variability amplitudes of these quasar populations are statistically similar to that of non-BAL, radio-quiet (typical) quasars.
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Taxonomy
TopicsAstronomical Observations and Instrumentation · Astrophysical Phenomena and Observations · Astronomy and Astrophysical Research