QPOs and Resonance in Accretion Disks

Details QPOs and Resonance in Accretion Disks QPOs and Resonance in Accretion Disks

Mar 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007rmxac..27...18k&link_type=abstract

Triggering Relativistic Jets (Eds. William H. Lee & Enrico Ramírez-Ruiz) Revista Mexicana de Astronomía y Astrofísica (Serie de

Physics

4

Accretion, Accretion Disks, Black Hole Physics, Hydrodynamics, Stars: Neutron

Scientific paper

We review arguments suggesting that millisecond variability detected in the X-ray flux of LMXBs has its origin in oscillation modes of the accretion disk. The twin high-frequency QPOs observed in microquasars seem to be related to the twin kHz QPOs in neutron-star systems, and both phenomena are likely the result of a non-linear resonance in the accretion disk that is possible only in strong-field gravity. A presumed 3:2 eigenfrequency ratio of the resonant modes corresponds to the 3:2 QPO frequency ratio clearly detected in black-hole systems, as well as to the more complex distribution of kHz QPO frequency pairs in neutron stars.

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