About: Global oscillations of a fluid torus as a modulation mechanism for black-hole high-frequency QPOs

Facets (new session)
Description
Metadata
Settings
- owl:sameAs
- Inference Rule:

About: Global oscillations of a fluid torus as a modulation mechanism for black-hole high-frequency QPOs Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Globální oscilace plynného torusu jako mechanismus modulace HFQPO v černých dírách (cs) We study strong-gravity effects on modulation of radiation emerging from accreting compact objects as a possible mechanism for flux modulation in QPOs. We construct a toy model of an oscillating torus in the slender approximation assuming thermal bremsstrahlung for the intrinsic emissivity of the medium and we compute observed (predicted) radiation signal including contribution of indirect (higher-order) images and caustics in the Schwarzschild spacetime. We show that the simplest oscillation mode in an accretion flow, axisymmetric up-and-down motion at the meridional epicyclic frequency, may be directly observable when it occurs in the inner parts of accretion flow around black holes. Together with the second oscillation mode, an in-and-out motion at the radial epicyclic frequency, it may then be responsible for the high-frequency modulations of the /mbox{X-ray} flux observed at two distinct frequencies (twin HF-QPOs) in micro-quasars. We study strong-gravity effects on modulation of radiation emerging from accreting compact objects as a possible mechanism for flux modulation in QPOs. We construct a toy model of an oscillating torus in the slender approximation assuming thermal bremsstrahlung for the intrinsic emissivity of the medium and we compute observed (predicted) radiation signal including contribution of indirect (higher-order) images and caustics in the Schwarzschild spacetime. We show that the simplest oscillation mode in an accretion flow, axisymmetric up-and-down motion at the meridional epicyclic frequency, may be directly observable when it occurs in the inner parts of accretion flow around black holes. Together with the second oscillation mode, an in-and-out motion at the radial epicyclic frequency, it may then be responsible for the high-frequency modulations of the /mbox{X-ray} flux observed at two distinct frequencies (twin HF-QPOs) in micro-quasars. (en)
Title	Global oscillations of a fluid torus as a modulation mechanism for black-hole high-frequency QPOs Global oscillations of a fluid torus as a modulation mechanism for black-hole high-frequency QPOs (en) Globální oscilace plynéeho torusu jako mechanismus modulace HFQPO v černých dírách (cs)
skos:prefLabel	Global oscillations of a fluid torus as a modulation mechanism for black-hole high-frequency QPOs Global oscillations of a fluid torus as a modulation mechanism for black-hole high-frequency QPOs (en) Globální oscilace plynéeho torusu jako mechanismus modulace HFQPO v černých dírách (cs)
skos:notation	RIV/67985815:_____/05:00025012!RIV06-AV0-67985815
http://linked.open.../vavai/riv/strany	849;855
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(AV0Z1003909)
http://linked.open...iv/cisloPeriodika	326
http://linked.open...vai/riv/dodaniDat	2006
http://linked.open...aciTvurceVysledku	Bursa, Michal
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Astronomický ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	522779
http://linked.open...ai/riv/idVysledku	RIV/67985815:_____/05:00025012
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	black hole physics; gravitation; X-rays (en)
http://linked.open.../riv/klicoveSlovo	black hole physics gravitation X-rays
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[3472811F6D19]
http://linked.open...i/riv/nazevZdroje	Astronomische Nachrichten
http://linked.open...in/vavai/riv/obor	BN
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	1 (xsd:int)
http://linked.open...UplatneniVysledku	2005
http://linked.open...v/svazekPeriodika	9
http://linked.open...iv/tvurceVysledku	Bursa, Michal
http://linked.open...n/vavai/riv/zamer	Astronomy and astrophysics of galaxies, stellar systems, stars, the Sun, Sun-Earth relations, interplanetary bodies and artificial satellites of the Earth
issn	0004-6337
number of pages	7 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Global oscillations of a fluid torus as a modulation mechanism for black-hole high-frequency QPOs

Faceted Search & Find service v1.16.118 as of Jun 21 2024

Alternative Linked Data Documents: ODE Content Formats:

RDF

ODATA

Microdata

About

OpenLink Virtuoso version 07.20.3240 as of Jun 21 2024, on Linux (x86_64-pc-linux-gnu), Single-Server Edition (126 GB total memory, 58 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software