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arXiv · 1202.0483

Period doubling and non-linear resonance in the black hole candidate IGR J17091-3624 ?

P. Rebusco·P. Moskalik·W. Kluzniak·M. A. Abramowicz
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Abstract

The two high frequency quasi periodic oscillations (HFQPOs) recently reported in the black hole candidate IGR J17091-3624 by Altamirano and Belloni (2012) 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 6 solar masses for the black hole in IGR J17091- 3624.

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P. Rebusco, P. Moskalik, W. Kluzniak, M. A. Abramowicz. 2012-03-12. Period doubling and non-linear resonance in the black hole candidate IGR J17091-3624 ?. https://doi.org/10.1051/0004-6361%2F201218883

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