Počet záznamů: 1
Light rays and wave fronts in strong gravity
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SYSNO ASEP 0496241 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Light rays and wave fronts in strong gravity Tvůrce(i) Karas, Vladimír (ASU-R) RID, ORCID
Kojima, Y. (JP)
Kunneriath, D. (DE)Zdroj.dok. Contributions of the Astronomical Observatory Skalnaté Pleso. - : Slovenská akadémia vied - ISSN 1335-1842
Roč. 48, č. 3 (2018), s. 446-455Poč.str. 10 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. SK - Slovensko Klíč. slova black holes ; accretion ; general relativity Vědní obor RIV BN - Astronomie a nebeská mechanika, astrofyzika Obor OECD Astronomy (including astrophysics,space science) CEP GA17-16287S GA ČR - Grantová agentura ČR Institucionální podpora ASU-R - RVO:67985815 UT WOS 000432795000007 EID SCOPUS 85049811396 Anotace Accretion onto black holes often proceeds via an accretion disk or a temporary disk-like pattern. Variability features observed in light curves as well as theoretical models of accretion flows suggest that accretion disks tend to be inhomogeneous variety of substructures (clumps) emerge within the flow. Rapid orbital motion of individual clumps then modulates the observed signal in X-rays. Furthermore, changes of spectral lines and polarization properties of the observed signal (or the absence of changes) constrain the models and reveal information about general relativity (GR) effects. In this write-up we summarize the basic equations that have been employed to study light propagation near black holes and to derive the radiation signal that can be expected at a detector within the framework of geometrical optics approximation. Pracoviště Astronomický ústav Kontakt Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Rok sběru 2019
Počet záznamů: 1