Epicyclic oscillations of thick relativistic disks

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F17%3AA0000040" target="_blank" >RIV/47813059:19240/17:A0000040 - isvavai.cz</a>
Result on the web
<a href="http://proceedings.physics.cz/index.php/ragtime-book/proceedings-of-ragtime-17-19" target="_blank" >http://proceedings.physics.cz/index.php/ragtime-book/proceedings-of-ragtime-17-19</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Epicyclic oscillations of thick relativistic disks
Original language description
We study epicyclic oscillations of thick relativistic tori with constant specific angular momentum distribution using the finite element numerical method. We have compared frequencies of the axisymmetric and non-axisymmetric modes with the analytic formulae obtained by Straub and Šrámková (2009) and Fragile et al. (2016). We have found excellent agreement in the case of axisymmetric radial epicyclic modes. In the case of the axisymmetric vertical epicyclic modes and non-axisymmetric modes in general, the analytic approximation agrees with numerical results only for tori of moderate thicknesses. Our analysis also revealed an instability of the thick constant angular momentum tori with respect to the radial epicyclic oscillations.
Czech name
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Czech description
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Project
<a href="/en/project/GA17-16287S" target="_blank" >GA17-16287S: Oscillations and coherent features in accretion disks around compact objects and their observational signatures</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of RAGtime 17–19: Workshops on black holes and neutron stars, 17–19/23–26 Oct., 1–5 Nov. 2015/2016/2017, Opava, Czech Republic
ISBN
9788075102560
ISSN
2336-5668
e-ISSN
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Number of pages
13
Pages from-to
47-59
Publisher name
Slezská univerzita v Opavě, Filozoficko–přírodovědecká fakulta v Opavě, Ústav fyziky
Place of publication
Opava (Česká republika)
Event location
Opava
Event date
Jan 1, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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