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arxiv: astro-ph/0206490 · v2 · submitted 2002-06-27 · 🌌 astro-ph

Evidence for a 2:3 resonance in Sco X-1 kHz QPOs

classification 🌌 astro-ph
keywords evidencefrequencyqposanchoredapproximatelyblackcandidatesdouble
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We find evidence that the two high frequency QPOs in Sco X-1 are, more often than not, approximately in the 2:3 frequency ratio familiar from studies of black hole candidates (e.g., XTE J1550-564, Remillard et al. 2002). This implies that the double kHz QPO phenomenon in neutron stars has its origin in properties of strong-field gravity and has little to do with the rotation of a stellar surface or any magnetic field structure anchored in the star.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. The properties and predictions of quasi-periodic oscillations around a black hole in nonlocal gravity

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    Nonlocal gravity shrinks the ISCO radius, boosts QPO frequencies, and constrains α/M ≤ 0.452 with M ≲ 43.6 M_⊙ for observed high-frequency QPOs under resonance models.

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