Národní úložiště šedé literatury Nalezeno 4 záznamů.  Hledání trvalo 0.00 vteřin. 
Modelling the bow–shock evolution along the DSO/G2 orbit in the Galactic centre
Štofanová, L. ; Zajaček, M. ; Kunneriath, D. ; Eckart, A. ; Karas, Vladimír
A radially directed flow of gaseous environment from a supermassive black hole affects the evolution of a bow–shock that develops along the orbit of an object passing through the pericentre. The bow–shock exhibits asymmetry between the approaching and receding phases, as can be seen in calculations of the bow-shock size, the velocity profile along the shocked layer, and the surface density of the bow–shock,\nand by emission-measure maps. We discuss these effects in the context of the recent pericentre transit of DSO/G2 near Sagittarius A*.
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.
Tidal disruption events from a nuclear star cluster as possible origin of transient relativistic spectral lines near SMBH
Karas, Vladimír ; Dovčiak, Michal ; Kunneriath, Devaky ; Yu, W. ; Zhang, W.
The authors discuss a possibility that a tidal disruption event near a dormant supermassive black hole can give rise to spectral features of iron in 6-7keV X-ray signal.
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.

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