Encounters
Resonance ○｜encounter｜ENC｜20260911233855-00-•
The commensurate frequencies of HFQPOs suggests that these oscillations are driven by some type of resonance condition. Abramowicz and Kluzniak (2001) proposed that orbiting blobs of accreting matter could generate the harmonic frequencies via a resonance between a pair of the coordinate frequencies given by GR. Earlier work had used GR coordinate frequencies and associated beat frequencies to explain fast QPOs in both neutron-star and BH systems (Stella et al. 1999), but without invoking a resonance condition. Current work on resonances as a means of explaining HFQPOs includes more realistic models for fluid flow in the Kerr metric. Resonance models are considered in more detail in §8.2.4.
Source: Remillard & McClintock 2006 ┃ X-Ray Properties… ⚬𓂃
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