National Repository of Grey Literature 4 records found  Search took 0.01 seconds. 
Effects of environmental drag onto a fast-moving magnetic compact star near a supermassive black hole
Karas, Vladimír ; Šubr, L. ; Kunneriath, Devaky ; Zajaček, Michal
The authors discuss whether a strong magnetic field of a neutron star can significantly enhance the drag effect by increasing the effective cross-sectional area for the mutual interaction.
Triggered oscillations and destruction of magnetized relativistic tori in 2D
Hamerský, Jaroslav ; Karas, Vladimír
The toroidal magnetic field plays a more important role in the early phases of the accretion process until the perturbed configuration finds a new equilibrium or disappears because of the runaway instability. We showed that additional perturbations in the vertical direction can lead to relativistic outflows if the perturbations are strong enough so that the mass could get far from the equatorial plane.
Revealing general relativity effects from accretion events near a supermassive black hole
Karas, Vladimír ; Dovčiak, Michal ; Eckart, A. ; Kunneriath, Devaky ; Zamaninasab, M.
The authors discuss the general relativity effects acting on the radiationmsignal from the inner accretion flow.
An Introduction to relativistic magnetohydrodynamics. II. Case of stationary electro-vacuum fields around black holes
Karas, Vladimír
The lecture on electrodynamical effects near black holes. The author summarize the basic equations of relativistic electrodynamics in terms of spin-coefficien formalism.

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