Variable X-ray Absorption in mini-BAL QSOs
M. Giustini, M. Cappi, G. Chartas, M. Eracleous, G.G.C. Palumbo, C., Vignali
TL;DR
This study analyzes X-ray spectral variability in two mini-BAL quasars, revealing changes in ionized gas properties that support radiatively-driven wind models of quasar outflows.
Contribution
It provides new insights into the physics of quasar outflows by linking X-ray spectral variability to changes in ionized gas properties.
Findings
Strong X-ray spectral variability observed over years
Variations explained by changes in covering factor and column density
Supports radiatively-driven accretion disk wind models
Abstract
We present the results of X-ray spectral analysis of two mini-BAL QSOs, PG 1126-041 and PG 1351+640, aimed at getting insights into the physics of quasar outflows. We find strong X-ray spectral variability on timescales of years. These variations can be well reproduced by variations of physical properties as the covering factor and column density of ionized gas along the line of sight, compatible with radiatively-driven accretion disk wind models.
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Taxonomy
TopicsX-ray Spectroscopy and Fluorescence Analysis · Nuclear Physics and Applications · Luminescence Properties of Advanced Materials