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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 |
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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.
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Received: 23 November 2011
Revised: 31 December 2011
Accepted manuscript online:
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PACS:
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04.40.Dg
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(Relativistic stars: structure, stability, and oscillations)
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97.60.Jd
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(Neutron stars)
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04.30.-w
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(Gravitational waves)
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26.60.-c
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(Nuclear matter aspects of neutron stars)
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Fund: 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). |
Corresponding Authors:
Wen De-Hua
E-mail: wendehua@scut.edu.cn
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Cite this article:
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 2012 Chin. Phys. B 21 060402
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