Prohlížení Acta Polytechnica dle autora "Karas , Vladimír"
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BEYOND THE STANDARD MODEL OF THE DISC–LINE SPECTRAL PROFILES FROM BLACK HOLE ACCRETION DISCS
Autor: Sochora , Vjaceslav; Karas , Vladimír; Svoboda , Jirí; Dovciak , Michal
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)The strong gravitational field of a black hole has distinct effects on the observed profile of a spectral line from an accretion disc near a black hole. The observed profile of the spectral line is broadened and skewed by ... -
DISTINGUISHING BETWEEN SPOT AND TORUS MODELS OF HIGH-FREQUENCY QUASIPERIODIC OSCILLATIONS
Autor: Karas , Vladimír; Bakala , Pavel; Török , Gabriel; Dovčiak , Michal; Wildner , Martin; Wzientek , Dalibor; Šrámková , Eva; Abramowicz , Marek; Goluchová , Kateřina; Mazur P., Grzegorz; Vincent H., Frédéric
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)In the context of high-frequency quasi-periodic oscillation (HF QPOs) we further explore the appearance of an observable signal generated by hot spots moving along quasi-elliptic trajectories close to the innermost stable ... -
OBLIQUE MAGNETIC FIELDS AND THE ROLE OF FRAME DRAGGING NEAR ROTATING BLACK HOLE
Autor: Karas , Vladimír; Kopáček , Ondřej; Kunneriath , Devaky
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)Magnetic null points can develop near the ergosphere boundary of a rotating black hole by the combined effects of strong gravitational field and the frame-dragging mechanism. The induced electric component does not vanish ...