Oral Presentation

Time-variable Line-locking Absorption Systems in HE0151−4326

Author(s): Qiang Liu Toru Misawa Akatoki Noboriguchi

Presenter: Qiang Liu (Shinshu University)

A super massive black hole (SMBH) and its host galaxy are believed to have evolved together (i.e., co-evolution) since they have the scaling relations. Outflow winds from activate galaxy nuclei (AGN) likely play a crucial role in the co-evolution between them. In this study, we monitored absorption profiles arising at outflow winds from quasars in their spectra. We chose a quasar HE0151-4326 as our target since it keeps line-locked absorption profiles in the spectrum, taken in several different observing epochs. We discovered the absorption lines had been variable especially in their Covering factor. We discuss the variability trend based on i) gas motion scenario and ii) change in the ionization scenario.