Mass-radius constraints for the neutron star EoS - Bayesian analysis

Abstract

We suggest a new Bayesian analysis (BA) using disjunct M-R constraints for extracting probability measures for cold, dense matter equations of state (EoS). One of the key issues of such an analysis is the question of a deconfinement transition in compact stars and whether it proceeds as a crossover or rather as a first order transition. We show by postulating results of not yet existing radius measurements for the known pulsars with a mass of $2M_{\odot }$ that a radius gap of about 3 km would clearly select an EoS with a strong first order phase transition as the most probably one. This would support the existence of a critical endpoint in the QCD phase diagram under scrutiny in present and upcoming heavy-ion collision experiments.

4 pages, 2 figures

References in corpus (4)

• Shapiro delay measurement of a two solar mass neutron star
• A Massive Pulsar in a Compact Relativistic Binary
• A new quark-hadron hybrid equation of state for astrophysics - I. High-mass twin compact stars
• Mixed phase effects on high-mass twin stars

Cited by in corpus (7)

• New class of hybrid EoS and Bayesian M-R data analysis
• Influence of the stiffness of the equation of state and in-medium effects on the cooling of compact stars
• EoS constraints from nuclear masses and radii in a meta-modeling approach
• Neutron star mass limit at $2M_{\odot }$ supports the existence of a CEP
• Camouflage of the Phase Transition to Quark Matter in Neutron Stars
• Effect of strong magnetic field on competing order parameters in two-flavor dense quark matter
• Mixed Phase within the Multi-polytrope Approach to High Mass Twins