Probing Strong-Field Scalar-Tensor Gravity with Gravitational Wave Asteroseismology

Details Probing Strong-Field Scalar-Tensor Gravity with Gravitational Wave Asteroseismology Probing Strong-Field Scalar-Tensor Gravity with Gravitational Wave Asteroseismology

2004-09-17

arxiv.org/abs/gr-qc/0409066v2

Phys.Rev. D70 (2004) 084026

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

14 pages, 7 figures

Scientific paper

10.1103/PhysRevD.70.084026

We present an alternative way of tracing the existence of a scalar field based on the analysis of the gravitational wave spectrum of a vibrating neutron star. Scalar-tensor theories in strong-field gravity can potentially introduce much greater differences in the parameters of a neutron star than the uncertainties introduced by the various equations of state. The detection of gravitational waves from neutron stars can set constraints on the existence and the strength of scalar fields. We show that the oscillation spectrum is dramatically affected by the presence of a scalar field, and can provide unique confirmation of its existence.

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