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28 March 2024
 
  » arxiv » 0902.4702

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Imprints of the nuclear symmetry energy on gravitational waves from the axial w-modes of neutron stars
De-Hua Wen ; Bao-An Li ; Plamen G. Krastev ;
Date 26 Feb 2009
AbstractThe eigen-frequencies of the first few axial w-modes of oscillating neutron stars are studied using the continued fraction method with an Equation of State (EOS) partially constrained by the recent terrestrial nuclear laboratory data. It is shown that the density dependence of the nuclear symmetry energy $E_{sym}( ho)$ affects significantly both the frequencies and the damping times of these modes. Besides confirming the previously found universal behavior of the mass-scaled eigen-frequencies as functions of the compactness of neutron stars, we explored several alternative universal scaling functions. Moreover, the $w_{II}$-mode is found to exist only for neutron stars having a compactness of $M/Rgeq 0.1078$ independent of the EOS used.
Source arXiv, 0902.4702
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