U sredu 19. marta, u 12 casova na Astronomskoj opservatoriji (Biblioteka) ce biti odrzan naucno-strucni skup sa temom iz radio astronomije, predavac J. Leon Tavares (Meksiko, trenutno u Max_planck-Institut fuer Radioastronomie, Bonn, Germany).
Radio-Optical Study of Double-Peaked AGNs
Double-Peaked AGNs show broad double-peaked profiles around Balmer and Mg II emission lines. Around 150 double-Peaked AGNs are known at present. The Keplerian accretion disk models can fit only ~50% of double-peaked profiles and the origin of the rest double-peaked profiles is still not well understood. We aim to explore the physical characteristics of the central engine of double-peaked emitters. For the double-peaked radio galaxy 3C 390.3 there is evidence that double-peaked emission lines and continuum luminosity are observed to vary following changes in the inner radio jet. We have imaged and modelled the radio emission of the inner jet of the double-peaked radio galaxy 3C~390.3, which was observed with very long baseline interferometry VLBI at 15 GHz, 22 GHz and 43 GHz, to image the inner part of the parsec-scale jet, locate the exact region where the bulk of the continuum luminosity is generated and search for the mechanism
that drives the double-peaked profile emission.