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相关论文: New Bayesian analysis of hybrid EoS constraints wi…

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We suggest a new Bayesian analysis using disjunct M-R constraints for extracting probability measures for cold, dense matter equations of state. One of the key issues of such an analysis is the question of a deconfinement transition in…

高能天体物理现象 · 物理学 2014-06-13 David B. Blaschke , Hovik A. Grigorian , David E. Alvarez-Castillo , Alexander S. Ayriyan

We perform a Bayesian analysis of probability measures for compact star equations of state using new, disjunct constraints for mass and radius. The analysis uses a simple parametrization for hybrid equations of state to investigate the…

高能天体物理现象 · 物理学 2014-08-29 David Alvarez-Castillo , Alexander Ayriyan , David Blaschke , Hovik Grigorian

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…

核理论 · 物理学 2016-02-05 A. Ayriyan , D. E. Alvarez-Castillo , D. Blaschke , H. Grigorian

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…

高能天体物理现象 · 物理学 2017-12-05 A. Ayriyan , D. E. Alvarez-Castillo , S. Benic , D. Blaschke , H. Grigorian , S. Typel

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…

高能天体物理现象 · 物理学 2016-03-15 David E. Alvarez-Castillo , Alexander Ayriyan , David Blaschke , Hovik Grigorian

A new scheme for testing the nuclear matter (NM) equation of state (EoS) at high densities using constraints from compact star (CS) phenomenology is applied to neutron stars with a core of deconfined quark matter (QM). An acceptable EoS…

天体物理学 · 物理学 2007-05-23 H. Grigorian , D. Blaschke , T. Klahn

A new scheme for testing the nuclear matter (NM) equation of state (EoS) at high densities using constraints from compact star (CS) phenomenology is applied to neutron stars with a core of deconfined quark matter (QM). An acceptable EoS…

天体物理学 · 物理学 2007-05-23 H. Grigorian , D. Blaschke , T. Klaehn

A new scheme for testing nuclear matter equations of state (EsoS) at high densities using constraints from neutron star phenomenology and a flow data analysis of heavy-ion collisions is suggested. An acceptable EoS shall not allow the…

We perform a Bayesian inference of the dense-matter equation of state (EOS) within a unified framework that incorporates hadronic matter, quark matter, and a smooth hadron-to-quark crossover. The EOS is constrained using physical…

核理论 · 物理学 2026-05-11 Xavier Grundler , Bao-An Li

We develop a Bayesian analysis method for selecting the most probable equation of state under a set of constraints from compact star physics, which now include the tidal deformability from GW170817. We apply this method for the first time…

高能天体物理现象 · 物理学 2019-02-19 A. Ayriyan , D. Alvarez-Castillo , D. Blaschke , H. Grigorian

We investigate dense-matter equations of state (EOSs) within a Bayesian framework, with particular emphasis on whether recent small-radius compact-star candidates can be accommodated in a twin-star scenario. For the hadronic sector, we…

高能天体物理现象 · 物理学 2026-04-24 Xieyuan Dong , Hong Shen , Jinniu Hu , Ying Zhang

Bayesian methods are used to constrain the density dependence of the QCD Equation of State (EoS) for dense nuclear matter using the data of mean transverse kinetic energy and elliptic flow of protons from heavy ion collisions (HIC), in the…

高能物理 - 唯象学 · 物理学 2023-11-20 Manjunath Omana Kuttan , Jan Steinheimer , Kai Zhou , Horst Stoecker

The composition of the core of neutron stars (NS) is still under debate. One possibility is that because of the high densities reached in their cores, matter could be deconfined into quark matter. We investigate the existence of hybrid…

核理论 · 物理学 2026-02-20 Milena Albino , Tuhin Malik , Márcio Ferreira , Constança Providência

A hybrid equation of state for dense matter is presented that satisfies phenomenological constraints from modern compact star observations which indicate high maximum masses of about 2 M_sun and large radii of R> 12 km. The corresponding…

核理论 · 物理学 2008-11-26 T. Klahn

Location of critical point and mapping the QCD phase boundary still exists as one of the most interesting and studied problems of heavy-ion physics. A new equation of state (EOS) for a gas of extended baryons and pointlike mesons is…

高能物理 - 唯象学 · 物理学 2011-03-23 C. P. Singh , P. K. Srivastava , S. K. Tiwari

We perform a model-agnostic Bayesian analysis of the neutron-star-matter equation of state (EoS), using known ab-initio constraints and astrophysical observations to limit its behavior at intermediate densities. Permitting explicit…

高能天体物理现象 · 物理学 2025-12-23 Sofia Blomqvist , Christian Ecker , Tyler Gorda , Aleksi Vuorinen

Future high-precision X-ray and gravitational-wave observations of neutron stars (NSs) are expected to constrain NS radii with uncertainties as small as $\sigma \simeq 0.1$~km. Such unprecedented precision offers a unique opportunity to…

高能天体物理现象 · 物理学 2026-02-17 Bao-An Li , Xavier Grundler , Wen-Jie Xie , Nai-Bo Zhang

Equation of State (EoS) for hot and dense nuclear matter with a quark-hadron phase transition is constructed within a statistical mixed-phase model assuming coexistence of unbound quarks in nuclear surrounding. This model predicts the…

核理论 · 物理学 2007-05-23 V. D. Toneev

We have found correlations between properties of the equation of state for stellar matter with a phase transition at supernuclear densities and two characteristic features of a "phase diagram" for rotating compact stars in the angular…

核理论 · 物理学 2009-11-07 H. Grigorian , D. Blaschke , G. Poghosyan

At the ultra-high densities existing in the core of neutron stars, it is expected that a phase transition from baryonic to deconfined quark matter may occur. Such a phase transition would affect the underlying equation of state (EoS) as…

高能天体物理现象 · 物理学 2023-12-15 Swarnim Shirke , Suprovo Ghosh , Debarati Chatterjee
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