Study on mass and radius of neutron star using asymmetry equation of stateof nuclear matter

Citation
Wf. Li et al., Study on mass and radius of neutron star using asymmetry equation of stateof nuclear matter, HIGH EN P N, 25(9), 2001, pp. 877-883
Citations number
15
Language
CHINESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
ISSN journal
0254-3052 → ACNP
Volume
25
Issue
9
Year of publication
2001
Pages
877 - 883
Database
ISI
SICI code
0254-3052(200109)25:9<877:SOMARO>2.0.ZU;2-A
Abstract
By resolving Tolman-Oppenheimer-Volkoff equation based on a temperature, de nsity, and isospin dependent nuclear equation of state of nuclear matter, w e obtained the mass of neutron star as a function of central density, and t he radius of neutron star was also investigated. It is found that both the maximum mass and the radius of neutron star strongly depend on the incompre ssibility, symmetry energy strength coefficient, and effective mass of nucl eon. With the increment of the incompressibility and symmetry energy streng th coefficient and the decrement of the nucleon effective mass, the maximum mass of nentron star increases. Meanwhile, the nuclear equation of state w ith large incompressibility, symmetry energy strength coefficient and nucle on effective mass results in relatively large neutron radius. These results imply that one can get some information about the nuclear equation of stat e by investigating the macroscopical variables of neutron stars such as mas s and radius etc. The relationship of the mass and radius of neutron star i s also investigated.