Oscillations of Thick Accretion Discs Around Black Holes

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dc.creatorRubio-Herrera, Eduardo
dc.creatorLee, William H.
dc.date2004-11-23
dc.date.accessioned2026-07-07T02:15:59Z
dc.date.available2026-07-07T02:15:59Z
dc.descriptionWe present a numerical study of the response of a thick accretion disc to a localized, external perturbation with the aim of exciting internal modes of oscillation. We find that the perturbations efficiently excite global modes recently identified as acoustic p--modes, and closely related to the epicyclic oscillations of test particles. The two strongest modes occur at eigenfrequencies which are in a 3:2 ratio. We have assumed a constant specific angular momentum distribution within the disc. Our models are in principle scale--free and can be used to simulate accretion tori around stellar or super massive black holes.
dc.description4 pages, 4 figures, accepted for publication as a letter in the Monthly Notices of the Royal Astronomical Society
dc.identifierhttps://arxiv.org/abs/astro-ph/0411654
dc.identifierhttp://arxiv.org/abs/astro-ph/0411654
dc.identifierMon.Not.Roy.Astron.Soc. 357 (2005) L31-L34
dc.identifierdoi:10.1111/j.1745-3933.2005.00011.x
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/8622
dc.subjectAstrophysics
dc.titleOscillations of Thick Accretion Discs Around Black Holes
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