A neutron star with a strange quark star-like mass-radius relation

A. Savaş Arapoğlu; A. Emrah Yükselci

doi:10.1016/j.dark.2020.100488

A neutron star with a strange quark star-like mass-radius relation

A. Savaş Arapoğlu, A. Emrah Yükselci^*

^*Corresponding author for this work

Department of Physics Engineering

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

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(ϕ)=−μ²ϕ²∕2+λϕ⁴∕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.

Original language	English
Article number	100488
Journal	Physics of the Dark Universe
Volume	28
DOIs	https://doi.org/10.1016/j.dark.2020.100488
Publication status	Published - May 2020

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© 2020 Elsevier B.V.

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abstract = "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(ϕ)=−μ2ϕ2∕2+λϕ4∕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.",

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AB - 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(ϕ)=−μ2ϕ2∕2+λϕ4∕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.

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A neutron star with a strange quark star-like mass-radius relation

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