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.
Variable X-ray absorption in mini-BAL QSOs / Giustini M.; Cappi M.; Chartas G.; Eracleous M.; Palumbo G.G.C.; Vignali C.. - STAMPA. - 427:(2010), pp. 108-109. (Intervento presentato al convegno Accretion and Ejection in AGN: a global view tenutosi a Como nel 22-26 giugno 2009).
Variable X-ray absorption in mini-BAL QSOs
GIUSTINI, MARGHERITA;PALUMBO, GIORGIO;VIGNALI, CRISTIAN
2010
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
