Using AGN Variability Surveys to explore the AGN-Galaxy Connection
Abstract
Variability is a successful technique used to identify active galactic nuclei in both ground and space-based galaxy surveys. Optical variability surveys using HST have uncovered a number of AGN in deep extragalactic fields extending to z ~ 3 and probing intrinsically faint sources. Mid-IR variability surveys using Spitzer have identified a significant number of AGN and are particularly sensitive to obscured sources. Many variability-detected AGN are not strong X-ray sources or lack the characteristic colors of AGN and would thus be unidentified using other selection techniques. In this conference proceedings, I discuss the nature of the variable sources and their host galaxies identified in deep extragalactic optical and mid-IR surveys.
- Publication:
-
Multiwavelength AGN Surveys and Studies
- Pub Date:
- July 2014
- DOI:
- 10.1017/S1743921314004372
- Bibcode:
- 2014IAUS..304..385S
- Keywords:
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- galaxies:active;
- galaxies: evolution;
- surveys