6th FERO meeting

ASTRONOMICAL INSTITUTE
ACADEMY OF SCIENCES, PRAGUE
Boční II 1401, 141 00 Praha 4
Czech Republic

30th – 31st of August 2012



Euro in Czech Crowns: 1€ = Kč
Metro-Tram scheme
Map of centre (more detailed)
    Participants

August



David Heyrovský, Lukáš Ledvina

Resolving quasar accretion discs by gravitational microlensing

[presentation]

Gravitational lens systems, in which the light of a background quasar passes directly through the stellar population of the lensing galaxy, can give rise to the additional microlensing effect. As the quasar moves relative to the stars, the caustic network formed by the local gravitational field provides a time-varying amplification of the flux from the quasar. The high angular resolution provided by the caustics permits an observer to resolve the structure of the emitting region of the quasar accretion disc. We present an overview of the theory and observations of quasar microlensing and demonstrate the sensitivity of simulated X-ray microlensing light curves to parameters of the quasar accretion disc models.