Spin polarised nuclear matter and its application to neutron stars

✍ Scribed by V.S. Uma Maheswari; D.N. Basu; J.N. De; S.K. Samaddar

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 969 KB
• Volume: 615
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(97)00002-x

✦ Synopsis

An equation of state (EOS) of nuclear matter with explicit inclusion of a spin-isospin dependent force is constructed from a finite range, momentum and density dependent effective interaction. This EOS is found to be in good agreement with those obtained from more sophisticated models for unpolarised nuclear matter. Introducing spin degrees of freedom, it is found that it is possible for neutron matter to undergo a ferromagnetic transition at densities realisable in the core of neutron stars. The maximum mass and the surface magnetic field of the neutron star can be fairly explained in this model. Since finding quark matter rather than hadronic matter at the core of neutron stars is a possibility, the proposed EOS is also applied to the study of hybrid stars. It is found using the bag model picture that one can in principle describe both the mass as well as the surface magnetic field of hybrid stars satisfactorily. (~) 1997 Elsevier Science B.V.