Wednesday Colloquium


"Doubly eclipsing systems"

Jakub Kolář (Masaryk University Brno)

Doubly eclipsing systems represent a new scientific field in stellar astrophysics. These objects are excellent laboratories for studying the formation mechanisms and evolution of multiple stars. Precise long-term monitoring of photometric data serves well for detecting these systems and brings better knowledge about their numbers and properties. Eclipse time variations can prove the mutual motion of binaries. We would like to introduce our research of observations and modelling of these systems.


"Cyclic Conformal Cosmology"

Krzysztof Meissner (Institute of Theoretical Physics, Warsaw University)

The assumptions behind CCC will be discussed. With the help of Penrose diagrams the connection of our aeon with the previous one will be described. Possible observational traces of the previous aeon will be discussed.


"Simulation of the dynamics and geometry of broad line region in quasars"

Mohamad Naddaf (CAMK, Warsaw)

Broad emission lines are the most characteristic feature in the quasar’s spectra, known since 60 years, but we need a theoretical model for the localisation of the broad line region (BLR), the region that gives rise to production of those broad lines. The most successful non-ad-hoc physically-motivated model during the last decade which consistently explains the formation of broad emission lines in the spectra of quasars and provides the information on the location of BLR is the failed radiatively accelerated dusty outflow (FRADO). The model currently available in the 2.5D advanced version, which I developed, has taken very progressive concrete steps toward the goal. The model is on its way to ultimately pave the path for using quasars in cosmology.


"February 19 - February 21"

Nicolaus Copernicus World Congress (Toruń)

Congress Program: