English
Related papers

Related papers: New class of hybrid EoS and Bayesian M-R data anal…

200 papers

We present a Bayesian analysis for a new class of realistic models of two-phase equations of state (EoS) for hybrid stars and demonstrate that the observation of a pair of high-mass twin stars would have a sufficient discriminating power to…

High Energy Astrophysical Phenomena · Physics 2017-12-05 A. Ayriyan , D. E. Alvarez-Castillo , S. Benic , D. Blaschke , H. Grigorian , S. Typel

First-order phase transitions, like the liquid-gas transition, proceed via formation of structures such as bubbles and droplets. In strongly interacting compact star matter, at the crust-core transition, but also at the hadron-quark…

High Energy Astrophysical Phenomena · Physics 2018-09-17 Vahagn Abgaryan , David Alvarez-Castillo , Alexander Ayriyan , David Blaschke , Hovik Grigorian

We present a physics-informed Bayesian analysis of equation of state constraints using observational data for masses, radii and tidal deformability of pulsars and a generic class of hybrid neutron star equation of state with color…

We introduce a family of equations of state (EoS) for hybrid neutron star (NS) matter that is obtained by a two-zone parabolic interpolation between a soft hadronic EoS at low densities and a stiff quark matter EoS with color…

Nuclear Theory · Physics 2022-09-08 Oleksii Ivanytskyi , David Blaschke

In this contribution, we outline a new 2-phase description of the quark-nuclear matter hybrid equation of state that takes into account effects of phase space occupation (excluded volume) in both, the hadronic and the quark matter phases.…

Nuclear Theory · Physics 2016-02-05 D. E. Alvarez-Castillo , M. A. R. Kaltenborn , D. Blaschke

The stellar configurations of quark stars are studied using perturbative QCD (pQCD) for the equation of state (EoS). The neutron star structures with equation of state obtained from Brussels-Montreal extended Skyrme interaction are also…

Nuclear Theory · Physics 2023-08-01 Joydev Lahiri , D. N. Basu

We explore the connection between the stiffness of an hadronic equation of state (EoS) with a sharp phase transition to quark matter to its tidal deformability. For this we employ a hadronic relativistic mean field model with a…

High Energy Astrophysical Phenomena · Physics 2020-05-20 Jan-Erik Christian , Jürgen Schaffner-Bielich

We perform an extensive study of equation of state (EoS) models featuring a phase transition from hadronic to deconfined quark matter in neutron star merger simulations. We employ three different hadronic EoSs, a constant speed of sound…

High Energy Astrophysical Phenomena · Physics 2025-12-12 Sebastian Blacker , Andreas Bauswein

Considering the mass constraint from the resent pulsar observations, we study the properties of neutron stars including hyperons and quarks explicitly. Using the chiral quark-meson coupling model with relativistic Hartree-Fock…

Nuclear Theory · Physics 2017-02-21 Tsuyoshi Miyatsu , Takahide Kambe , Koichi Saito

We construct a set of equations of state (EoS) of dense and hot matter with a 1st order phase transition from a hadronic system to a deconfined quark matter state. In this two-phase approach, hadrons are described using the relativistic…

High Energy Astrophysical Phenomena · Physics 2019-08-27 Mateusz Cierniak , Tobias Fischer , Niels-Uwe Bastian , Thomas Klaehn , Marc Salinas

The equation of state (EoS) for neutron stars is a crucial topic in astrophysics, nuclear physics, and quantum chromodynamics (QCD), influencing their structure, stability, and observable properties. This review classifies EoS models into…

Nuclear Theory · Physics 2025-07-08 Zuhua Ji , Jiarui Chen , Yan Chen

We present a hybrid equation of state (EoS) for dense matter in which a nuclear matter phase is described within the Dirac-Brueckner-Hartree-Fock (DBHF) approach and a two-flavor quark matter phase is modelled according to a recently…

Nuclear Theory · Physics 2008-11-26 D. B. Blaschke , D. Gomez Dumm , A. G. Grunfeld , T. Klahn , N. N. Scoccola

We introduce a family of equations of state (EoS) for hybrid neutron star (NS) matter that is obtained by a two-zone parabolic interpolation between a soft hadronic EoS at low densities and a set of stiff quark matter EoS at high densities…

High Energy Astrophysical Phenomena · Physics 2022-02-18 A. Ayriyan , D. Blaschke , A. G. Grunfeld , D. Alvarez-Castillo , H. Grigorian , V. Abgaryan

A two-phase description of the quark-nuclear matter hybrid equation of state that takes into account the effect of excluded volume in both the hadronic and the quark matter phases is introduced. The nuclear phase manifests a reduction of…

High Energy Astrophysical Phenomena · Physics 2017-10-04 Mark Alexander Randolph Kaltenborn , Niels-Uwe Friedrich Bastian , David Bernhard Blaschke

The potential hadron-to-quark phase transition in neutron stars has not been fully understood as the property of cold, dense, and strongly interacting matter cannot be theoretically described by the first-principle perturbative…

Nuclear Theory · Physics 2025-05-01 Ronghao Li , Sophia Han , Zidu Lin , Lingxiao Wang , Kai Zhou , Shuzhe Shi

The stable configurations of non-rotating and rotating hybrid stars composed of colour superconducting quark matter core are constructed using several equations of state (EOSs). We use a set of diverse EOSs for the nuclear matter which…

High Energy Astrophysical Phenomena · Physics 2010-04-06 B. K. Agrawal

The hadron-quark phase transition in the core of heavy neutron star (NS) has been studied. For the hadronic sector, we have used the lowest-order constraint variational method by employing $ AV_{18} $, $ AV_{14}$, $ UV_{14}$, and Reid $ 68…

Nuclear Theory · Physics 2025-09-12 S. Khanmohamadi , H. R. Moshfegh , S. Atashbar Tehrani

The possibility of discovering twin stars, two neutron stars (NSs) with the same mass but different radii, is usually studied in forward modelings by using a restricted number of NS matter equation of state (EOS) encapsulating a first-order…

High Energy Astrophysical Phenomena · Physics 2025-11-10 Xavier Grundler , Bao-An Li

We construct a set of hyperonic equations of state (EoS) by assuming SU(3) symmetry within the baryon octet and by using a covariant density functional (CDF) theory approach. The low-density regions of our EoS are constrained by terrestrial…

Nuclear Theory · Physics 2022-10-06 Han Rui Fu , Jia Jie Li , Armen Sedrakian , Fridolin Weber

The hadron-quark phase transition in core-collapse supernovae (CCSNe) has the potential to trigger explosions in otherwise nonexploding models. However, those hybrid supernova equations of state (EOS) shown to trigger an explosion do not…

Solar and Stellar Astrophysics · Physics 2016-11-23 Oliver Heinimann , Matthias Hempel , Friedrich-Karl Thielemann
‹ Prev 1 2 3 10 Next ›