中国物理B ›› 2011, Vol. 20 ›› Issue (3): 39701-039701.doi: 10.1088/1674-1056/20/3/039701

• • 上一篇    

Effects of σ* and Φ mesons on the surface redshift of a neutron star

赵先锋   

  1. Department of Electronics Engineering, Chuzhou University, Chuzhou 239000, China
  • 收稿日期:2010-04-22 修回日期:2010-10-08 出版日期:2011-03-15 发布日期:2011-03-15
  • 基金资助:
    Project supported by the Science Research Program of Institutions of Higher Education of Anhui Province, China (Grant No. KJ2009B106), the Science Research Program of Chuzhou University, China (Grant No. 2008kj019B), and the Scientific Research Starting F

Effects of $\sigma^{\ast }$ and $\varPhi$ mesons on the surface redshift of a neutron star

Zhao Xian-Feng(赵先锋)†   

  1. Department of Electronics Engineering, Chuzhou University, Chuzhou 239000, China
  • Received:2010-04-22 Revised:2010-10-08 Online:2011-03-15 Published:2011-03-15
  • Supported by:
    Project supported by the Science Research Program of Institutions of Higher Education of Anhui Province, China (Grant No. KJ2009B106), the Science Research Program of Chuzhou University, China (Grant No. 2008kj019B), and the Scientific Research Starting Foundation for Doctoral Scientists of Chuzhou University, China.

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摘要： The effects of σ* and Φ mesons on the surface redshift of a neutron star have been investigated within the framework of relativistic mean field theory for the baryon octet {n,p,Λ,Σ-,Σ0,Σ+,Ξ-,Ξ0} system. It is found that compared with those without considering the contributions of σ* and Φ mesons, the surface redshift decreases and that corresponding to the maximum value of the mass also decreases from 0.2540 to 0.2236, about by 12%. Meanwhile, it is also found that including σ* and Φ mesons, the M/R and that corresponding to the maximum mass decrease.

关键词: surface redshift, relativistic mean field theory, neutron star

Abstract: The effects of $\sigma^{\ast}$ and $\varPhi $ mesons on the surface redshift of a neutron star have been investigated within the framework of relativistic mean field theory for the baryon octet {$n,p,\varLambda , \varSigma ^{ - },\varSigma ^{0},\varSigma ^{ + },\varXi ^{ - },\varXi ^{0}$} system. It is found that compared with those without considering the contributions of $\sigma ^{\ast }$ and $\varPhi $ mesons, the surface  redshift decreases and that corresponding to the maximum value of the mass also decreases from 0.2540 to 0.2236, about by 12%. Meanwhile, it is also found that including $\sigma ^{\ast }$ and $\varPhi $ mesons, the $M/R$  and that corresponding to the maximum mass decrease.

Key words: surface redshift, relativistic mean field theory, neutron star

中图分类号:  (Neutron stars)

  • 97.60.Jd
26.60.Kp (Equations of state of neutron-star matter) 21.65.Mn (Equations of state of nuclear matter)