R-mode Instability of Neutron Star with Non-Newtonian Gravity

燕晶; 文德华

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理论物理通讯 ›› 2013, Vol. 59 ›› Issue (01) : 47-52.

R-mode Instability of Neutron Star with Non-Newtonian Gravity

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R-mode Instability of Neutron Star with Non-Newtonian Gravity

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摘要

The Chandrasekhar-Friedmann-Schutz (CFS) instabilities of r-modes for canonical neutron stars (1.4 M_Θ) with rigid crusts are investigated by using an equation of state of asymmetric nuclear matter with super-soft symmetry energy, where the non-Newtonian gravity proposed in the grand unification theories is also considered. Constrained by the observations of the masses and the spin frequencies for neutron stars, the boundary of the r-mode instability window for a canonical neutron star is obtained, and the results show that the observed neutron stars are all outside the instability window, which is consistent with the theoretical expectation. In addition, an upper limit of the non-Newtonian gravity parameters is also given.

Abstract

导出引用

燕晶, 文德华. R-mode Instability of Neutron Star with Non-Newtonian Gravity[J]. 理论物理通讯, 2013, 59(01): 47-52

YAN Jing, WEN De-Hua. R-mode Instability of Neutron Star with Non-Newtonian Gravity[J]. Communications in Theoretical Physics, 2013, 59(01): 47-52

中图分类号： 04.40.Dg 26.60.-c 97.60.Jd 21.65.Ef

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基金

Supported by the National Natural Science Foundation of China under Grant Nos. 10947023 and 11275073, and the Fundamental Research Funds for the Central Universities under Grant No. 2012ZZ0079, the Project Sponsored by the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry. This Research has Made Use of NASA's Astrophysics Data System