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National Repository of Grey Literature 26 records found  beginprevious17 - 26  jump to record: Search took 0.01 seconds. 
An XSPEC model to explore spectral features from black-hle sources. II. The relativistic iron line in the lamp-post geometry
 Dovčiak, Michal ; Svoboda, Jiří ; Goosmann, R. W. ; Karas, Vladimír ; Matt, G. ; Sochora, Vjačeslav
In the paper authors compare the two radial profiles of the line emission - the broken power-law dependence and illumination in the lamp-post scenario.
Detailed record
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.
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Modelling steep radial emissivity in relativistic iron lines from black-hole accretion discs
 Svoboda, Jiří ; Dovčiak, Michal ; Karas, Vladimír ; Goosmann, R. W.
The authors discuss whether the special conditions on the corona properties are indeed required, and/or whether the steep radial emissivity could be an artefact of model assumptions.
Detailed record
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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Porovnání modelů relativistické čáry železa
 Svoboda, Jiří ; Dovčiak, Michal ; Goosmann, René ; Karas, Vladimír
The analysis of the broad iron line profile in the X-ray spectra of active galactic nuclei and black hole X-ray binaries allows us to constrain the spin parameter of the black hole. We compare the constraints on the spin value for two X-ray sources, MCG-6-30-15 and GX 339-4, with a broad iron line using present relativistic line models in XSPEC - LAOR and KYRLINE.
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Záblesky ze spirálních vln ovlivněné efektem čočkování a časového zpoždění?
 Karas, Vladimír ; Dovčiak, Michal ; Eckart, A. ; Meyer, L.
We examine physics of flares from spiral waves by lensing and time-delay amplification.
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Změna primárního a reprocesovaného záření v modelu záblesků a skvrn
 Dovčiak, Michal ; Karas, Vladimír ; Matt, G. ; Goosmann, René
We study variation of the primary and reprocessed radiation in the flare-spot model.
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Polarizace záření akrečních disků v jádrech aktivních galaxií
 Dovčiak, Michal ; Karas, Vladimír ; Matt, G. ; Martocchia, A.
The effects of strong gravity on polarization are studied.
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Relativistický posuv spektrálních čar akrečních disků černých děr
 Pecháček, T. ; Dovčiak, Michal ; Karas, Vladimír
We study gravitational redshift of spectral lines.
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Model pro XSPEC ke zkoumání spekter z černoděrových zdrojů
 Dovčiak, Michal ; Karas, Vladimír ; Martocchia, A. ; Matt, G. ; Yaqoob, T.
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.
Detailed record

National Repository of Grey Literature : 26 records found   beginprevious17 - 26  jump to record:
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