English

Can the massive neutron star PSR J0348+0432 be a hyperon star?

Nuclear Theory 2017-12-27 v1

Abstract

Whether the massive neutron star PSR J0348+0432 can change into a hyperon star is studied in the framework of the relative mean field theory by choosing the suitable hyperon coupling constants. We find that whether the mesons σ\sigma^{*} and ϕ\phi being considered or not, the neutron star PSR J0348+0432 all can change into a hyperon star and the hyperon star transition density are the same for the two cases. We also find that the canonical mass neutron star also can change into a hyperon star in a minor hyperon star transition density as the mesons σ\sigma^{*} and ϕ\phi are not considered. Our results confirms some of recent conclusions.

Keywords

Cite

@article{arxiv.1712.08870,
  title  = {Can the massive neutron star PSR J0348+0432 be a hyperon star?},
  author = {Xian-Feng Zhao},
  journal= {arXiv preprint arXiv:1712.08870},
  year   = {2017}
}

Comments

11 pages,7 figures, This paper was published in Acta Physica Polonica B, 2017, 48(2): 171-181