Gravitational waves from the axial perturbations of hyperon stars

doi:10.1088/1674-1056/21/6/060402

中国物理B ›› 2012, Vol. 21 ›› Issue (6): 60402-060402.doi: 10.1088/1674-1056/21/6/060402

Gravitational waves from the axial perturbations of hyperon stars

文德华, 燕晶, 刘雪梅

Department of Physics, South China University of Technology, Guangzhou 510641, China

收稿日期:2011-11-23 修回日期:2011-12-31 出版日期:2012-05-01 发布日期:2012-05-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 10947023) and the Fundamental Research Funds for the Central Universities (Grant No. 2012ZZ0079).

Gravitational waves from the axial perturbations of hyperon stars

Wen De-Hua(文德华)^†, Yan Jing(燕晶), and Liu Xue-Mei(刘雪梅)

Department of Physics, South China University of Technology, Guangzhou 510641, China

Received:2011-11-23 Revised:2011-12-31 Online:2012-05-01 Published:2012-05-01
Contact: Wen De-Hua E-mail:wendehua@scut.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 10947023) and the Fundamental Research Funds for the Central Universities (Grant No. 2012ZZ0079).

摘要/Abstract

摘要： The eigen-frequencies of the axial w-mode oscillations of hyperon stars are examined. It is shown that as the appearance of hyperons softens the equation of state of the super-density matter, the frequency of gravitational waves from the axial w-mode of hyperon star becomes smaller than that of a traditional neutron star at the same stellar mass. Moreover, the eigenfrequencies of hyperon stars also have scaling universality. It is shown that the EURO third-generation gravitational-wave detector has the potential to detect the gravitational-wave signal emitted from the axial w-mode oscillations of a hyperon star.

关键词: hyperon star, oscillation, gravitational wave

Abstract: The eigen-frequencies of the axial w-mode oscillations of hyperon stars are examined. It is shown that as the appearance of hyperons softens the equation of state of the super-density matter, the frequency of gravitational waves from the axial w-mode of hyperon star becomes smaller than that of a traditional neutron star at the same stellar mass. Moreover, the eigenfrequencies of hyperon stars also have scaling universality. It is shown that the EURO third-generation gravitational-wave detector has the potential to detect the gravitational-wave signal emitted from the axial w-mode oscillations of a hyperon star.

Key words: hyperon star, oscillation, gravitational wave

中图分类号: (Relativistic stars: structure, stability, and oscillations)

04.40.Dg

97.60.Jd (Neutron stars) 04.30.-w (Gravitational waves) 26.60.-c (Nuclear matter aspects of neutron stars)

文德华, 燕晶, 刘雪梅. Gravitational waves from the axial perturbations of hyperon stars[J]. 中国物理B, 2012, 21(6): 60402-060402.

Wen De-Hua(文德华), Yan Jing(燕晶), and Liu Xue-Mei(刘雪梅) . Gravitational waves from the axial perturbations of hyperon stars[J]. Chin. Phys. B, 2012, 21(6): 60402-060402.

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Gravitational waves from the axial perturbations of hyperon stars

Gravitational waves from the axial perturbations of hyperon stars

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