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arXiv 1112.4375gr-qcastro-ph.CO
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中子-暗能量混合星引力波谱中可能的暗能量印记

Possible dark energy imprints in gravitational wave spectrum of mixed neutron-dark-energy stars

Stoytcho S. Yazadjiev, Daniela D. Doneva

摘要:

本文研究了含有不同比例的普通物质和暗能量的中子星的振荡谱。在我们考虑的模型中,平衡配置的数值构造和结果表明,混合神经元暗能量星的属性可以显着不同时,在恒星的暗能量的量是不同的。在Cowling近似下研究了混合神经元-暗能量星的振荡。结果发现,基模和高泛音的频率受暗能量含量的强烈影响。这可以在未来用来探测中子星中暗能量的存在,并限制暗能量模型。

英文摘要:

In the present paper we study the oscillation spectrum of neutron stars containing both ordinary matter and dark energy in different proportions. Within the model we consider, the equilibrium configurations are numerically constructed and the results show that the properties of the mixed neuron-dark-energy star can differ significantly when the amount of dark energy in the stars is varied. The oscillations of the mixed neuron-dark-energy stars are studied in the Cowling approximation. As a result we find that the frequencies of the fundamental mode and the higher overtones are strongly affected by the dark energy content. This can be used in the future to detect the presence of dark energy in the neutron stars and to constrain the dark-energy models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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