Decaying orbits near a rotating black hole
Pecháček, T.; Karas, Vladimír
2004 - English
We consider orbits of a test body near a rotating black hole. The orbits are perturbed by two effects which drive them away from purely geodesic motion. V této práci zkoumáme dráhy testovacích částic v blízkosti rotující černé díry.. Dráhy jsou ovlivněny perturbacemi, které způsobují jejich pomalý vývoj.
Keywords:
black holes; accretion; relativity
Available at various institutes of the ASCR
Decaying orbits near a rotating black hole
We consider orbits of a test body near a rotating black hole. The orbits are perturbed by two effects which drive them away from purely geodesic motion....
General aspects of nonlinear resonance 3:2 in QPO context
Horák, Jiří
2004 - English
In the resonant model, quasi periodic oscillations (QPOs) are supposed to be consequence of a nonlinear resonance between modes of oscillations within innermost parts of an accretion disk. Zkoumáme rezonanční model kvaziperiodických oscilací (QPO), podle něhož tento efekt souvisí s módy akrečního disku.
Keywords:
black holes; accretion; relativity
Available at various institutes of the ASCR
General aspects of nonlinear resonance 3:2 in QPO context
In the resonant model, quasi periodic oscillations (QPOs) are supposed to be consequence of a nonlinear resonance between modes of oscillations within innermost parts of an accretion ...
An XSPEC model to explore spectral fetures from black-hole sources
Dovčiak, Michal; Karas, Vladimír; Martocchia, A.; Matt, G.; Yaqoob, T.
2004 - English
We report on a new general relativistic computational model enhancing, in various respects, the capability of presently available tools for fitting spectra of X-ray sources. Popisujeme nový software pro výpočty obecně relativistických vlivů ve spektrech rentgenových zdrojů. Nový program významně rozšiřuje dosavadní možnosti.
Keywords:
black holes; accretion; relativity
Available at various institutes of the ASCR
An XSPEC model to explore spectral fetures from black-hole sources
We report on a new general relativistic computational model enhancing, in various respects, the capability of presently available tools for fitting spectra of X-ray sources....
Stellar orbits in the gravitational field of a massive torus near a galactic centre
Šubr, L.; Karas, Vladimír
2004 - English
We further examine orbits of satellite stars in the gravitational field of a dark supermassive compact body, which is surrounded by a self-gravitating accretion disc or a massive molecular torus. Tato práce je pokračováním studia drah satelitů v gravitační poli superhmotného kompaktního tělesa a akrečního disku nebo molekulárního toru.
Keywords:
black holes; accretion; relativity
Available at various institutes of the ASCR
Stellar orbits in the gravitational field of a massive torus near a galactic centre
We further examine orbits of satellite stars in the gravitational field of a dark supermassive compact body, which is surrounded by a self-gravitating accretion disc or a massive molecular ...
Two dimensional spectroscopy of an irregular sunspot
Jurčák, Jan; Sobotka, Michal; Pillet, M.
2003 - English
Available at various institutes of the ASCR
Two dimensional spectroscopy of an irregular sunspot
Digital spectrometer for radio astronomical observations
Jiřička, Karel; Montebugnoli, S.
2003 - English
Available at various institutes of the ASCR
Digital spectrometer for radio astronomical observations
Duplicity of epsilon Persei confirmed
Libich, Jan; Harmanec, Petr; Yang, S.; Hadrava, Petr; Koubský, Pavel; Škoda, Petr; Šlechta, Miroslav; Aerts, C.; de Cat, P.
2003 - English
Available at various institutes of the ASCR
Duplicity of epsilon Persei confirmed
Cosmological ideas in the 16th century
Hadrava, Petr; Hadravová, Alena
2003 - English
The influence of Giordano Bruno on extending the scope of early modern cosmology behing the borders of Solar system is studies, expecially the Kepler's thoughts on the limits of the Universe. V práci je studován vliv Giordana Bruna na rozšíření obzoru raně novověké kosmologie za hranice Sluneční soustavy, zejména Keplerovy úvahy o konečnosti vesmíru.
Keywords:
Kepler-Olbers' paradox; history of astronomy; history of science
Available at various institutes of the ASCR
Cosmological ideas in the 16th century
The influence of Giordano Bruno on extending the scope of early modern cosmology behing the borders of Solar system is studies, expecially the Kepler's thoughts on the limits of the Universe....
W Serpentins-like stars: the case of UX monocerotis
Ondřich, D.; Harmanec, Petr
2003 - English
Available at various institutes of the ASCR
W Serpentins-like stars: the case of UX monocerotis
Statistical analysis of the high-frequency solar radio bursts
Mészárosová, Hana
2002 - English
Keywords:
statistical analysis; solar radio bursts
Available at various institutes of the ASCR
Statistical analysis of the high-frequency solar radio bursts
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