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

Publication date: Available online 7 February 2020Source: Physics of the Dark UniverseAuthor(s): A. Savaş Arapoğlu, A. Emrah YükselciAbstractWe 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.

Source: Physics of the Dark Universe - February 8, 2020 Category: Physics Source Type: research