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Constraints on Estimation of Radius of Double Pulsar PSR J0737-3039A and Its Neutron Star Nuclear Matter Composition

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【作者】 杨佚沿； 陈黎； 令狐荣锋； 张立云； 塔尼阿里；

【Author】 Yi-Yan Yang;Li Chen;Rong-Feng Linghu;Li-Yun Zhang;Ali TAANI;Astronomy Department, Beijing Normal University;School of Physics and Electronic Sciences, Guizhou Education University;College of Science, Guizhou University;Applied Science Department, Aqaba University College, Al-Balqa Applied University;

【机构】 Astronomy Department, Beijing Normal University； School of Physics and Electronic Sciences, Guizhou Education University； College of Science, Guizhou University； Applied Science Department, Aqaba University College, Al-Balqa Applied University；

【摘要】 The aspect of formation and evolution of the recycled pulsar(PSR J0737-3039 A/B) is investigated, taking into account the contributions of accretion rate, radius and spin-evolution diagram(– diagram) in the double pulsar system. Accepting the spin-down age as a rough estimate(or often an upper limit) of the true age of the neutron star, we also impose the restrictions on the radius of this system. We calculate the radius of the recycled pulsar PSR J0737-3039 A ranges approximately from 8.14 to 25.74 km, and the composition of its neutron star nuclear matters is discussed in the mass-radius diagram.

【Abstract】 The aspect of formation and evolution of the recycled pulsar(PSR J0737-3039 A/B) is investigated, taking into account the contributions of accretion rate, radius and spin-evolution diagram(– diagram) in the double pulsar system. Accepting the spin-down age as a rough estimate(or often an upper limit) of the true age of the neutron star, we also impose the restrictions on the radius of this system. We calculate the radius of the recycled pulsar PSR J0737-3039 A ranges approximately from 8.14 to 25.74 km, and the composition of its neutron star nuclear matters is discussed in the mass-radius diagram.

【关键词】 recycled； neutron； radius； Radius； Nuclear； contributions； impose； quark； hereafter； strange；
【基金】 Supported by the National Program on Key Research and Development Project under Grant No 2016YFA0400801;the National Natural Science Foundation of China under Grant Nos 11173034,11673023 and 11364007;the Fundamental Research Funds for the Central University;the Key Support Disciplines of Theoretical Physics of Guizhou Province Education Bureau under Grant No ZDXK[2015]38;the Youth Talents Project of Science and Technology in Education Bureau of Guizhou Province under Grant No KY[2017]204
  • 【文献出处】 Chinese Physics Letters ,中国物理快报(英文版) , 编辑部邮箱 ,2017年12期
  • 【分类号】P145.6
  • 【下载频次】20
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