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The LIGO-Virgo collaboration ground-breaking detection of the binary neutron-star merger event, GW170817, has intensified efforts towards the understanding of the equation of state (EoS) of nuclear matter. In this letter, we compare…

Nuclear Experiment · Physics 2018-07-18 C. Y. Tsang , M. B. Tsang , P. Danielewicz , W. G. Lynch , F. J. Fattoyev

It is anticipated that the gravitational radiation detected in future gravitational wave (GW) detectors from binary neutron star (NS) mergers can probe the high-density equation of state (EOS). We perform the first simulations of binary NS…

General Relativity and Quantum Cosmology · Physics 2023-11-15 Atul Kedia , Hee Il Kim , In-Saeng Suh , Grant J. Mathews

We construct posterior distributions of the equation of state (EoS) for matter beyond the inner crust of neutron stars by incorporating finite nuclei (FN) constraints within relativistic mean field models. These constraints are implemented…

Nuclear Theory · Physics 2026-01-21 Anagh Venneti , Sarmistha Banik , Bijay K Agrawal

Driven by recent laboratory experiments and astronomical observations, significant advances have deepened our understanding of neutron-star physics. NICER's Pulse Profile Modeling has refined our knowledge of neutron star masses and radii,…

Nuclear Theory · Physics 2024-11-07 Marc Salinas , Jorge Piekarewicz

From empirically determined values of some of the characteristic constants associated with homogeneous nuclear matter at saturation and sub-saturation densities, within the framework of a Skyrme-inspired energy density functional, we…

Nuclear Theory · Physics 2015-06-23 N. Alam , B. K. Agrawal , J. N. De , S. K. Samaddar , G. Colò

The nuclear matter equation of state is relatively well constrained at sub-saturation densities thanks to the knowledge from nuclear physics. However, studying its behavior at supra-saturation densities is a challenging task. Fortunately,…

Nuclear Theory · Physics 2023-02-17 Hoa Dinh Thi , Chiranjib Mondal , Francesca Gulminelli

The uncertainties in neutron star (NS) radii and crust properties due to our limited knowledge of the equation of state (EOS) are quantitatively analysed. We first demonstrate the importance of a unified microscopic description for the…

Solar and Stellar Astrophysics · Physics 2016-10-12 M. Fortin , C. Providencia , A. R. Raduta , F. Gulminelli , J. L Zdunik , P. Haensel , M. Bejger

In numerical simulations of core-collapse supernova and binary neutron stars mergers, information about the energetics and composition of matter is implemented via external tables covering the huge ranges of thermodynamic conditions…

Nuclear Theory · Physics 2025-09-11 Adriana R. Raduta , Mikhail V. Beznogov

We construct a combined model to incorporate neutron star (NS) mass measurements with electromagnetic mass-radius constraints and gravitational-wave observations using Bayesian inference. We use different mass distributions for three…

High Energy Astrophysical Phenomena · Physics 2025-12-22 Mahmudul Hasan Anik , Andrew W. Steiner , Richard O'Shaughnessy

The NICER Collaboration recently reported the measurement of the mass and radius of a pulsar PSR J0030+0451. We here use this new measurement to constrain one of the higher-order nuclear matter parameters $K_{\mathrm{sym,0}}$. We further…

High Energy Astrophysical Phenomena · Physics 2020-02-11 Josef Zimmerman , Zack Carson , Kristen Schumacher , Andrew W. Steiner , Kent Yagi

The composition and properties of infinite nuclear matter under extreme conditions of temperature and pressure remain incompletely understood. In this work, we constrain the equation of state (EoS) of nuclear matter - constructed within the…

Nuclear Theory · Physics 2025-11-04 Rahul Kumar , Prasanta Char , Rana Nandi

The observation of $1.97\pm0.04$ solar-mass neutron-like star gives constraint on the equation of state (EOS) of cold, condensed matter. In this paper, the EOS for both pure quark star and hybrid star with a quark core described by…

High Energy Astrophysical Phenomena · Physics 2015-06-12 Yan Yan , Jing Cao , Xin-Lian Luo , Wei-Min Sun , Hongshi Zong

Rapid access to accurate equation-of-state (EOS) data is crucial in the warm-dense matter regime, as it is employed in various applications, such as providing input for hydrodynamic codes to model inertial confinement fusion processes. In…

Computational Physics · Physics 2023-12-12 Timothy J. Callow , Jan Nikl , Eli Kraisler , Attila Cangi

We show that the widely used parabolic approximation to the Equation of State (EOS) of asymmetric nuclear matter leads systematically to significantly higher core-crust transition densities and pressures. Using an EOS for neutron-rich…

Nuclear Theory · Physics 2010-03-04 Lie-Wen Chen , Bao-An Li , Hong-Ru Ma , Jun Xu

The merger dynamics of a black hole-neutron star (BHNS) binary is influenced by the neutron star equation of state (EoS) through the latter's effect on the neutron star's radius and on the character of the mass transfer onto the black hole.…

High Energy Astrophysical Phenomena · Physics 2014-11-20 Matthew D. Duez , Francois Foucart , Lawrence E. Kidder , Christian D. Ott , Saul A. Teukolsky

An equation of state(EOS) of nuclear matter with explicit inclusion of a spin-isospin dependent force is constructed from a finite range, momentum and density dependent effective interaction. This EOS is found to be in good agreement with…

Nuclear Theory · Physics 2009-10-30 V. S. Uma Maheswari , D. N. Basu , J. N. De , S. K. Samaddar

Understanding how matter behaves at the highest densities and temperatures is a major open problem in both nuclear physics and relativistic astrophysics. This physics is often encapsulated in the so-called high-temperature nuclear equation…

High Energy Astrophysical Phenomena · Physics 2022-06-22 Mikhail M. Meskhi , Noah E. Wolfe , Zhenyu Dai , Carla Frohlich , Jonah M. Miller , Raymond K. W. Wong , Ricardo Vilalta

EOS is a technology demonstrator, designed to explore the capabilities of hybrid event detection technology, leveraging both Cherenkov and scintillation light simultaneously. With a fiducial mass of four tons, EOS is designed to operate in…

We present a Bayesian framework for joint and coherent analyses of multimessenger binary neutron star signals. The method, implemented in our bajes infrastructure, incorporates a joint likelihood for multiple datasets, support for various…

High Energy Astrophysical Phenomena · Physics 2024-09-04 Matteo Breschi , Rossella Gamba , Gregorio Carullo , Daniel Godzieba , Sebastiano Bernuzzi , Albino Perego , David Radice

With an average density higher than the nuclear density, neutron stars (NS) provide a unique test-ground for nuclear physics, quantum chromodynamics (QCD), and nuclear superfluidity. Determination of the fundamental interactions that govern…