Corpus ID: 118121217

Variable X-ray Absorption in mini-BAL QSOs

  title={Variable X-ray Absorption in mini-BAL QSOs},
  author={Margherita Giustini and M. Cappi and G. Chartas and Michael Eracleous and Giorgio G. C. Palumbo and Cristian Vignali},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
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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