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



Tomáš Pecháček

The theory of power spectrum break frequency in multi-flare accretion disc variability models

[presentation]

Observed X-ray fluxes from galactic black-hole candidates and active galactic nuclei are remarkably variable. A large class of models in the literature is based on an assumption that this variability is driven by magnetic flares or hot spots residing on the surface of an accretion disc. In my talk I will present a recently developed computationally efficient method for constraining the overall shape of the power-spectrum densities generated by the multi-flare models with exponentially-decaying flare emissivity profiles. I will demonstrate how to use this method to eliminate large subclasses of the model parameter space corresponding to PSDs inconsistent with the observational data.