Stellar Oscillations in Tensor-Vector-Scalar Theory

Abstract

An alternative theory of gravity has recently been proposed by Bekenstein, named Tensor-Vector-Scalar (TeVeS) theory, which can explain many galactic and cosmological observations without the need for dark matter. Whilst this theory passes basic solar system tests, and has been scrutinized with considerable detail in other weak-field regimes, comparatively little has been done in the strong-field limit of the theory. In this article, with Cowling approximation, we examine the oscillation spectra of neutron stars in TeVeS. As a result, we find that the frequencies of fundamental modes in TeVeS could become lager than those expected in general relativity, while the dependence of frequency of higher overtone on gravitational theory is stronger than that of lower modes. These imprints of TeVeS make it possible to distinguish the gravitational theory in strong-field regime via the observations of gravitational waves, which can provide unique confirmation of the existence of scalar field.

accepted in PRD

References in corpus (11)

• Torsional Oscillations of Relativistic Stars with Dipole Magnetic Fields
• Can Cosmic Structure form without Dark Matter?
• Alfvén QPOs in Magnetars
• Constraints on the Magnetic Field Geometry of Magnetars
• TeVeS gets caught on caustics
• Strong lensing probability for testing TeVeS theory
• Black holes in the TeVeS theory of gravity and their thermodynamics
• Crustal Oscillations of Slowly Rotating Relativistic Stars
• Nonradial oscillations of slowly and differentially rotating compact stars
• Gravitational radiation from collapsing magnetized dust
• Gravitational waves from a dust disk around a Schwarzschild black hole

Cited by in corpus (2)

• Black holes and neutron stars in the generalized tensor-vector-scalar theory
• Gravitational Radiation from Collapsing Magnetized Dust. II -- Polar Parity Perturbation --