Inferring Physical Parameters of Compact Stars from their f-mode Gravitational Wave Signals

We propose here a robust scheme to infer the physical parameters of compact stars from their f-mode gravitational wave signals. We first show that the frequency and the damping rate of f-mode oscillation of compact stars can be expressed in terms of universal functions of stellar mass and moment of...

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Bibliographic Details
Published in:The Astrophysical journal 2010-05, Vol.714 (2), p.1234-1238
Main Authors: Lau, H. K, Leung, P. T, Lin, L. M
Format: Article
Language:English
Subjects:
Astronomy
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
Earth, ocean, space
EQUATIONS
EQUATIONS OF STATE
Exact sciences and technology
FERMIONS
GRAVITATIONAL WAVES
MASS
MOMENT OF INERTIA
NEUTRON STARS
OSCILLATION MODES
QUARKS
SIGNALS
STARS
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Summary:We propose here a robust scheme to infer the physical parameters of compact stars from their f-mode gravitational wave signals. We first show that the frequency and the damping rate of f-mode oscillation of compact stars can be expressed in terms of universal functions of stellar mass and moment of inertia. By employing the universality in the f-mode one can then infer accurate values of the mass, the moment of inertia, and the radius of a compact star. In addition, we demonstrate that our new scheme works well for both realistic neutron stars and quark stars, and hence provides a unifying way to infer the physical parameters of compact stars.
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/714/2/1234