Bayesian analysis for two-parameter hybrid EoS with high-mass compact star twins

Abstract

We perform a Bayesian analysis in the basis of a recently developed two-parameter class of hybrid equations of state that allow for high-mass compact star twins. While recently a wide range of radii, from 9 - 15 km, has been inferred for different neutron stars using different techniques, we perform our analysis under the supposition that the radii are towards the large end ($13-15$ km). We use this radius constraint together with the undebated statistically independent constraint for high masses ($\sim 2M_{\odot }$) as priors in selecting the most probable hybrid equations of state from a family with two free parameters: the baryon excluded volume in the hadronic phase and the 8-quark vector channel interaction in the quark matter phase.

11 pages, 3 figures, Proceedings of the Conference "Compact Stars in the QCD Phase Diagram IV", September 26-30, 2014, Prerow, Germany

References in corpus (7)

• Shapiro delay measurement of a two solar mass neutron star
• A Massive Pulsar in a Compact Relativistic Binary
• Mixed phase effects on high-mass twin stars
• High-mass twins & resolution of the reconfinement, masquerade and hyperon puzzles of compact star interiors
• Bayesian Analysis of Hybrid EoS based on Astrophysical Observational Data
• Energy bursts from deconfinement in high-mass twin stars
• Supporting the existence of the QCD critical point by compact star observations

Cited by in corpus (2)

• Energy bursts from deconfinement in high-mass twin stars
• Bayesian analysis for a new class of hybrid EoS models using mass and radius data of compact stars