2012/02/29 by P. Rebusco, P. Moskalik, W. Kluźniak +2 · 1 citation
Physics and Astronomy · #Astrophysical Phenomena and Observations #Black hole (networking) #Nonlinear system #Period (music) #Pulsars and Gravitational Waves Research #Quasi periodic #Resonance (particle physics) #Solar mass #Stars #Stellar, planetary, and galactic studies #astro-ph.HE #physics.flu-dyn
paper · pdf · doi:10.1051/0004-6361/201218883
published as Astronomy &Astrophysics, 540 (2012) L4-L6 · 3 pages, accepted by Astronomy & Astrophysics Letters
arxiv created 2012/03/12 · openalex publication_date 2012/03/13 · arxiv updated 2012/08/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The two high frequency quasi periodic oscillations (HFQPOs) recently reported in the black hole candidate IGR J17091-3624 are in a 5:2 frequency ratio (164 Hz to 66 Hz). This ratio is strongly suggestive of period doubling and nonlinear resonance analogous to phenomena known in RV Tauri-type pulsating stars (and recently discovered also in oscillations of RR Lyrae-type and of BL Herculis-type variables). An interpretation of the frequency ratio in terms of nonlinear interactions and a comparison with the HFQPOs reported in GRS 1915+105 may imply a mass of about six solar masses for the black hole in IGR J17091-3624.