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Paper: Constraining the Mass and Moment of Inertia of Neutron Stars from Quasi-Periodic Oscillations in X-ray Binaries
Volume: 466, Electromagnetic Radiation from Pulsars and Magnetars
Page: 225
Authors: Pétri, J.
Abstract: We put some constraints on the mass and moment of inertia of neutron stars based on the interpretation of high-frequency quasi-periodic oscillations (HF-QPOs) observed in low mass X-ray binaries (LMXBs). We use available HF-QPOs observations to look for the average mass and moment of inertia of neutron stars by applying our parametric resonance model to discriminate between slow and fast rotators in relation with the innermost stable circular orbit (ISCO). We find an average mass M* ≈ (2.0 – 2.2) M. The corresponding average moment of inertia is then I* ≈ (1 – 3) × 1038kg m2 ≈ (0.5 – 1.5) (10 km)2 M.
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