Resonant switch model of twin peak HF QPOs applied to the atoll source 4U 163653
Abstract
We present a Resonant Switch (RS) model of twin peak highfrequency quasiperiodic oscillations (HF QPOs), assuming switch of twin oscillations at a resonant point, where frequencies of the upper and lower oscillations ν_{U} and ν_{L} become to be commensurable and the twin oscillations change from one pair of the oscillating modes (corresponding to a specific model of HF QPOs) to some other pair due to nonlinear resonant phenomena. The RS model enables to determine range of allowed values of spin a and mass M of the neutron star located at the atoll source 4U 163653 where two resonant points are observed at frequency ratios ν_{U} : ν_{L} = 3:2, 5:4.
 Publication:

Feeding Compact Objects: Accretion on All Scales
 Pub Date:
 February 2013
 DOI:
 10.1017/S1743921312020194
 arXiv:
 arXiv:1212.6669
 Bibcode:
 2013IAUS..290..317S
 Keywords:

 stars: neutron;
 Xrays: binaries;
 accretion;
 accretion disks;
 Astrophysics  High Energy Astrophysical Phenomena
 EPrint:
 2 pages, to be published in Proceedings of IAUS 290 "Feeding Compact Objects: Accretion on All Scales", C. M. Zhang, T. Belloni, M. Mendez and S. N. Zhang (eds.)