Gravitational waves from the axial perturbations of hyperon stars

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 tr...

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Bibliographic Details
Published inChinese physics B Vol. 21; no. 6; pp. 63 - 70
Main Author 文德华 燕晶 刘雪梅
Format Journal Article
LanguageEnglish
Published 01.06.2012
Subjects
Eigenfrequencies
Emittance
Equations of state
Gravitational waves
Hyperons
Neutron stars
Oscillations
Stars
Stellar mass
中子星
发射信号
引力波
恒星质量
扰动
本征频率
状态方程
轴向
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Summary: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.
Bibliography:hyperon star, oscillation, gravitational wave
Wen De-Hua, Yah Jing, and Liu Xue-Mei（Department of Physics, South China University of Technology, Guangzhou 510641, China）
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.
11-5639/O4
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/21/6/060402