Series: Astronomy Colloquium
Date: Wednesday 14-Oct-2020
Time: 16:00-17:00 (4:00-5:00 pm)
Location: Online Zoom Only: Contact Sylvain Veilleux for URL
Speaker: Prof. Nahum Arav (Virginia Tech)
Title: "The Contribution of Quasar Absorption Outflows to AGN Feedback"
Determining the distance of quasar absorption outflows from the central source and their kinetic luminosity are crucial for understanding their contribution to AGN feedback. Here we summarize the results for a sample of nine luminous quasars that were observed with the Hubble Space Telescope. We find that the outflows in more than half of the objects are powerful enough to be the main agents for AGN feedback. The sample is representative of the quasar absorption outflow population as a whole and is unbiased towards specific distance ranges or kinetic luminosity value. Therefore, the analysis results can be extended to the majority of such objects, including broad absorption line quasars (BALQSO).
Colloquia for the Fall 2020 semester will be held on zoom. Contact Prof. Alberto Bolatto for details.
Colloquium Organizer:
Prof. Alberto Bolatto
Special accommodations for individuals with disabilities can be made by calling (301) 405-3001. It would be appreciated if we are notified at least one week in advance.
