1997•arXiv (Cornell University)Open access

Sonic-Point Model for High-Frequency QPOs in Neutron Star Low-Mass X-Ray Binaries

M. Coleman Miller, Frederick K. Lamb, Dimitrios Psaltis

Abstract

Quasi-periodic brightness oscillations (QPOs) with frequencies in the range 300-1200 Hz have been detected from at least nine neutron star low-mass X-ray binaries. Here we summarize the sonic-point model for these brightness oscillations, which we present in detail elsewhere. If the sonic-point interpretation of kilohertz QPOs is confirmed, measurements of kilohertz QPO frequencies in low-mass X-ray binaries will provide new bounds on the masses and radii of neutron stars in these systems and new constraints on the equation of state of matter at high densities.

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Key concepts: Neutron star, Physics, Astrophysics, Brightness, Low Mass, X-ray, Equation of state, Range (aeronautics)