GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS |
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Constraints on Estimation of Radius of Double Pulsar PSR J0737-3039A and Its Neutron Star Nuclear Matter Composition |
Yi-Yan Yang1,2**, Li Chen1**, Rong-Feng Linghu2**, Li-Yun Zhang3, Ali TAANI4 |
1Astronomy Department, Beijing Normal University, Beijing 100875 2School of Physics and Electronic Sciences, Guizhou Education University, Guiyang 550018 3College of Science, Guizhou University, Guiyang 550025 4Applied Science Department, Aqaba University College, Al-Balqa Applied University, Aqaba, Jordan
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Cite this article: |
Yi-Yan Yang, Li Chen, Rong-Feng Linghu et al 2017 Chin. Phys. Lett. 34 129701 |
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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 ($B$–$P$ 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.
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Received: 07 July 2017
Published: 24 November 2017
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Fund: 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, and the Youth Talents Project of Science and Technology in Education Bureau of Guizhou Province under Grant No KY[2017]204. |
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