Effects of the symmetry energy slope on the axial oscillations of neutron stars

doi:10.1088/1674-1056/22/8/080401

Abstract The impact of symmetry energy slope L on the axial w-mode oscillations is explored, where the range of the constrained slope L of symmetry energy at saturation density is adopted from 25 MeV to 115 MeV while keeping the equation of state (EOS) of symmetric nuclear matter fixed. Based on the range of the symmetry energy slope, a constraint on the frequency and damping time of the w_I-mode of the neutron star is given. It is found that there is a perfect linear relation between the frequency and the stellar mass for a fixed slope L, and the softer symmetry energy corresponds to a higher frequency. Moreover, it is confirmed that both the frequencies and damping times have a perfect universal scaling behavior for the EOSs with different symmetry energy slopes at saturation density.

Keywords: symmetry energy neutron star oscillation

Received: 28 November 2012
Revised: 26 February 2013
Accepted manuscript online:

PACS:	04.40.Dg	(Relativistic stars: structure, stability, and oscillations)
	26.60.-c	(Nuclear matter aspects of neutron stars)
	97.60.Jd	(Neutron stars)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10947023 and 11275073), the Fundamental Research Funds for the Central Universities (Grant No. 2012ZZ0079), and sponsored by SRF for ROCS, SEM. This research has made use of NASA's Astrophysics Data System.

Corresponding Authors: Wen De-Hua
E-mail: wendehua@scut.edu.cn

Cite this article:

Wen De-Hua (文德华), Zhou Ying (周颖) Effects of the symmetry energy slope on the axial oscillations of neutron stars 2013 Chin. Phys. B 22 080401

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