Profile of the composition fractions in neutron stars |
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| Authors: | Wenfei Li Fengshou Zhang Liewen Chen |
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| Affiliation: | (1) Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, 730000 Lanzhou, China;(2) Institute of Modern Physics, Chinese Academy of Sciences, 730000 Lanzhou, China;(3) Department of Physics, Shanghai Jiao Tong University, 200030 Shanghai, China |
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| Abstract: | The composition fractions of β-stable neutron stars and their radial distributions are investigated based on Skyrme-Hartree-Fock theory and Tolman-Oppenheimer-Volkoff (TOV) equation. It is found that a pure neutron interior with a radius of 3.5 km can exist in the neutron stars. When the radius is greater than 3.5 km, the fractions of the proton, electron and μ− appear and increase with the increment of the radius, then decrease after reaching their maximum at the radius of 8 km. These results make it possible to further study the thermal evolution and magnetic properties of the neutron stars. |
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| Keywords: | neutron stars compositon fractions asymmetric nuclear matter equation of state Tolman-Oppenheimer-Volkoff equation |
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