A Neutron Star with a Strange Quark Star-like Mass-Radius Relation
| Autor: | A. Emrah Yükselci, A. Savaş Arapoğlu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
Strange quark Cosmology and Nongalactic Astrophysics (astro-ph.CO) FOS: Physical sciences Astronomy and Astrophysics Function (mathematics) Radius General Relativity and Quantum Cosmology (gr-qc) Star (graph theory) General Relativity and Quantum Cosmology Neutron star Stars Space and Planetary Science Neutron Scalar field Mathematical physics Astrophysics - Cosmology and Nongalactic Astrophysics |
| Popis: | We study the structure of spherically symmetric and static objects in the presence of a nonminimally coupled scalar field having a potential of the form $V(\phi)=-\mu^2\phi^2/2+\lambda\phi^4/4$. We numerically solve equations of the system using two different realistic equations of state for neutron matter and give the mass-radius relations as well as the radial profiles of the scalar field, densities and the mass function for a sample configuration. We show that a specific solution type encountered in such systems causes characteristic neutron star mass-radius relations to turn into the ones belonging to strange quark stars. Comment: 8 pages, 2 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|