About: Secular theory of the orbital evolution of the young stellar disc in the Galactic Centre

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Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We investigate the orbital evolution of a system of N mutually interacting stars on initially circular orbits around the dominating central mass. We include the perturbative influence of a distant axisymmetric source and an extended spherical potential. In particular, we focus on the case when the secular evolution of orbital eccentricities is suppressed by the spherical perturbation. By means of standard perturbation methods, we derive semi-analytic formulae for the evolution of normal vectors of the individual orbits. We find its two qualitatively different modes. Either the orbits interact strongly and, under such circumstances, become dynamically coupled, precessing synchronously in the potential of the axisymmetric perturbation, or, if their mutual interaction is weaker, the orbits precess independently, interchanging periodically their angular momentum, which leads to oscillations of inclinations. We argue that these processes may have been fundamental to the evolution of the disc of young stars orbiting the supermassive black hole in the centre of the Milky Way. We investigate the orbital evolution of a system of N mutually interacting stars on initially circular orbits around the dominating central mass. We include the perturbative influence of a distant axisymmetric source and an extended spherical potential. In particular, we focus on the case when the secular evolution of orbital eccentricities is suppressed by the spherical perturbation. By means of standard perturbation methods, we derive semi-analytic formulae for the evolution of normal vectors of the individual orbits. We find its two qualitatively different modes. Either the orbits interact strongly and, under such circumstances, become dynamically coupled, precessing synchronously in the potential of the axisymmetric perturbation, or, if their mutual interaction is weaker, the orbits precess independently, interchanging periodically their angular momentum, which leads to oscillations of inclinations. We argue that these processes may have been fundamental to the evolution of the disc of young stars orbiting the supermassive black hole in the centre of the Milky Way. (en)
Title	Secular theory of the orbital evolution of the young stellar disc in the Galactic Centre Secular theory of the orbital evolution of the young stellar disc in the Galactic Centre (en)
skos:prefLabel	Secular theory of the orbital evolution of the young stellar disc in the Galactic Centre Secular theory of the orbital evolution of the young stellar disc in the Galactic Centre (en)
skos:notation	RIV/67985815:_____/11:00437044!RIV15-GA0-67985815
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA202/09/0772), P(GA205/07/0052), P(GD205/09/H033), Z(AV0Z10030501), Z(MSM0021620860)
http://linked.open...iv/cisloPeriodika	416
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Šubr, Ladislav
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	228524
http://linked.open...ai/riv/idVysledku	RIV/67985815:_____/11:00437044
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	massive black-hole; cluster; stars (en)
http://linked.open.../riv/klicoveSlovo	cluster stars massive black-hole
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[2AC2278091D0]
http://linked.open...i/riv/nazevZdroje	Monthly Notices of the Royal Astronomical Society
http://linked.open...in/vavai/riv/obor	BN
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Current problems of gravitation, general relativity and relativistic astrophysics General relativity and its applications in astrophysics and cosmology Signatures of strong gravity in black hole accretion discs and in outflows
http://linked.open...UplatneniVysledku	2011
http://linked.open...iv/tvurceVysledku	Haas, J. Šubr, Ladislav Vokrouhlický, D.
http://linked.open...ain/vavai/riv/wos	000295119900016
http://linked.open...n/vavai/riv/zamer	Astronomie a astrofyzika Fyzikální studium objektů a procesů ve sluneční soustavě a v astrofyzikálních systémech
issn	0035-8711
number of pages	10 (xsd:int)
http://bibframe.org/vocab/doi	10.1111/j.1365-2966.2011.19100.x

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