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

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

2002-06-27

arxiv.org/abs/astro-ph/0206490v2

Astron.Astrophys. 404 (2003) L21

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures

Scientific paper

10.1051/0004-6361:20030737

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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