Probing the inner structure of distant AGNs with gravitational lensing
D. Sluse (1), D. Hutsem\'ekers (2), F. Courbin (3), G. Meylan (3), J., Wambsganss (4) (1- AIfA, University of Bonn, 2- Uni. Li\`ege, 3- LASTRO Ecole, Poytechnique F\'ed\'erale de Lausanne, 4- ARI Uni. Heidelberg)
TL;DR
This paper reviews how gravitational microlensing can be used to investigate the inner structures of distant active galactic nuclei, providing insights into accretion disks and broad line regions.
Contribution
It demonstrates recent applications of microlensing techniques to measure accretion disk temperature profiles and the geometry of broad emission line regions in AGNs.
Findings
Microlensing measures accretion disk temperature profiles.
Estimates sizes of broad emission line regions.
Reveals geometry of emission regions.
Abstract
Microlensing is a powerful technique which can be used to study the continuum and the broad line emitting regions in distant AGNs. After a brief description of the methods and required data, we present recent applications of this technique. We show that microlensing allows one to measure the temperature profile of the accretion disc, estimate the size and study the geometry of the region emitting the broad emission lines.
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