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The Twin Peak QPOs in Neutron Star and Black Hole Sources: What is explained, and What is not

Conference paper
Authors Marek A Abramowicz
W. Kluzniak
M. Bursa
P. Rebusco
G. Torok
Published in Revista Mexicana de Astronomía y Astrofísica (Serie de Conferencias)
Volume 27
Pages 8-17
Publication year 2007
Published at Department of Physics (GU)
Pages 8-17
Language en
Links adsabs.harvard.edu/abs/2007RMxAC..2...
Keywords Black holes, neutron stars, X-ray variability
Subject categories Physical Sciences

Abstract

The resonance model proposed in 2000 by Kluzniak and Abra-mo-wicz, explains the twin peak, high frequency, quasi periodic oscillations (HF QPOs) observed in the X-ray flux from black hole and neutron stars, as a non-linear resonance in modes of oscillations of accretion flows in strong gravity. While several important physical questions remain unanswered, recent observations of HF QPOs provide direct evidence of non-linear resonances. This article gives an up to date (May 2006) review of what has been explained, and what has not been explained, by the resonance model.

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