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Internal resonance in nonlinear disk oscillations and the amplitude evolution of neutron-star kilohertz QPOs
- 1.0338102 - ASÚ 2010 RIV FR eng J - Journal Article
Horák, Jiří - Abramowicz, M. A. - Kluzniak, W. - Rebusco, P. - Török, G.
Internal resonance in nonlinear disk oscillations and the amplitude evolution of neutron-star kilohertz QPOs.
Astronomy & Astrophysics. Roč. 499, č. 2 (2009), s. 535-540. ISSN 0004-6361. E-ISSN 1432-0746
R&D Projects: GA ČR GA205/07/0052; GA ČR GP205/06/P415
Institutional research plan: CEZ:AV0Z10030501
Keywords : X-rays * neutron stars * accretion disks
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics
Impact factor: 4.179, year: 2009
We study the properties of twin kilohertz quasiperiodic oscillations (QPOs) with a simple toy model consisting of two oscillation modes coupled with a general nonlinear force. We examine resonant effects by slowly varying the values of the tunable, and nearly commensurable, eigenfrequencies.
Permanent Link: http://hdl.handle.net/11104/0181962
Number of the records: 1