About: LNRF-velocity hump-induced oscillations of a Keplerian disc orbiting near-extreme Kerr black hole: A possible explanation of high-frequency QPOs in GRS 1915+105     Goto   Sponge   NotDistinct   Permalink

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Description
  • At least four high-frequency quasiperiodic oscillations (QPOs) at frequencies 41Hz, 67Hz, 113Hz, and 167Hz were reported in a binary system GRS 1915+105 hosting near-extreme Kerr black hole with a dimensionless spin a>0.98. We use the idea of oscillations induced by the hump of the orbital velocity profile (related to locally non-rotating frames - LNRF) in discs orbiting near-extreme Kerr black holes, which are characterized by a %22humpy frequency%22 f_h, that could excite the radial and vertical epicyclic oscillations with frequencies f_r, f_v. Due to non-linear resonant phenomena the combinational frequencies are allowed as well.
  • At least four high-frequency quasiperiodic oscillations (QPOs) at frequencies 41Hz, 67Hz, 113Hz, and 167Hz were reported in a binary system GRS 1915+105 hosting near-extreme Kerr black hole with a dimensionless spin a>0.98. We use the idea of oscillations induced by the hump of the orbital velocity profile (related to locally non-rotating frames - LNRF) in discs orbiting near-extreme Kerr black holes, which are characterized by a %22humpy frequency%22 f_h, that could excite the radial and vertical epicyclic oscillations with frequencies f_r, f_v. Due to non-linear resonant phenomena the combinational frequencies are allowed as well. (en)
  • U binárního systému GRS 1915+105 obsahující téměř extrémní Kerrovu černou díru s bezrozměrným spinem a>0.98 byly zjištěny alespoň čtyři vysokofrekvenční QPO s frekvencemi 41Hz, 67Hz, 113Hz a 167Hz. Využíváme ideu indukce oscilací hrbolem na profilu orbitální rychlosti (vztažené k lokálně nerotujícím pozorovatelům LNRF) v discích obíhajících téměř extrémní Kerrovy černé díry, jenž je charakterizován „frekvencí hrbu“ f_h umožňující excitovat radiální a vertikální epicyklické oscilace s frekvencemi f_r, f_v. Vzhledem k nelineárním rezonančním jevům jsou umožněny také kombinační frekvence. (cs)
Title
  • LNRF-velocity hump-induced oscillations of a Keplerian disc orbiting near-extreme Kerr black hole: A possible explanation of high-frequency QPOs in GRS 1915+105
  • LNRF-velocity hump-induced oscillations of a Keplerian disc orbiting near-extreme Kerr black hole: A possible explanation of high-frequency QPOs in GRS 1915+105 (en)
  • Oscilace keplerovského disku obíhajícího blízko extrémní Kerrovy černé díry indukované hrbolem na rychlostním profilu LRNF (cs)
skos:prefLabel
  • LNRF-velocity hump-induced oscillations of a Keplerian disc orbiting near-extreme Kerr black hole: A possible explanation of high-frequency QPOs in GRS 1915+105
  • LNRF-velocity hump-induced oscillations of a Keplerian disc orbiting near-extreme Kerr black hole: A possible explanation of high-frequency QPOs in GRS 1915+105 (en)
  • Oscilace keplerovského disku obíhajícího blízko extrémní Kerrovy černé díry indukované hrbolem na rychlostním profilu LRNF (cs)
skos:notation
  • RIV/47813059:19240/07:#0000756!RIV08-MSM-19240___
http://linked.open.../vavai/riv/strany
  • 401-404
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • Z(MSM4781305903)
http://linked.open...iv/cisloPeriodika
  • May 2007
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 431246
http://linked.open...ai/riv/idVysledku
  • RIV/47813059:19240/07:#0000756
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • accretion discs, Black hole physics (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • FR - Francouzská republika
http://linked.open...ontrolniKodProRIV
  • [9A794E4A1F37]
http://linked.open...i/riv/nazevZdroje
  • Astronomy & Astrophysics
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 470
http://linked.open...iv/tvurceVysledku
  • Stuchlík, Zdeněk
  • Török, Gabriel
  • Slaný, Petr
http://linked.open...n/vavai/riv/zamer
issn
  • 0004-6361
number of pages
http://localhost/t...ganizacniJednotka
  • 19240
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