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In X-ray astronomy, quasi periodic oscillations (QPOs) are routinely shown by black hole and neutron star X-ray binary systems in their X-ray flux. Despite being strong and easily measurable signals, their physical origin is yet unknown. Several theories has been proposed, in particular for the low frequency (LF) QPOs, ranging from well-developed theories that have been confronted with data to ideas briefly described in a few papers.

I am interested to know how the astrophysical community would decide which theory is the correct theory for the observed quasi periodic oscillations.

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