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In simulations of binary neutron star mergers, the dense matter equation of state (EOS) is required over wide ranges of density and temperature as well as under conditions in which neutrinos are trapped, and the effects of magnetic fields…

High Energy Astrophysical Phenomena · Physics 2019-02-20 S. Lalit , M. A. A. Mamun , C. Constantinou , M. Prakash

Massive neutron stars (NS) are expected to possess a quark core. While the hadronic side of the NS equation of state (EOS) can be considered well established, the quark side is quite uncertain. While calculating the EOS of hadronic matter…

Astrophysics · Physics 2009-11-07 G. F. Burgio , M. Baldo , P. K. Sahu , A. B. Santra , H. -J. Schulze

The cores of neutron stars (NSs) contain the densest matter in the universe. Rapid advancements in neutron-star observations allow unprecedented empirical access to cold, ultra-dense Quantum Chromodynamics (QCD) matter. The combination of…

High Energy Astrophysical Phenomena · Physics 2025-06-10 Oleg Komoltsev

Dark matter admixed neutron stars (DANSs) serve as a specific astrophysical laboratory for probing the features of dark matter (DM) and have emerged as a promising candidate for interpreting recent astrophysical observations (e.g., by NICER…

High Energy Astrophysical Phenomena · Physics 2025-12-30 Jing Fu Hu , Hang Lu , Bao Yuan Sun

We perform a Bayesian inference of the equation of state (EOS) of cold dense matter within a density-dependent relativistic mean-field (DD-RMF) model. An explicit inverse-mapping procedure reconstructs the density-dependent couplings from a…

Nuclear Theory · Physics 2026-03-09 Wen-Jie Xie , Cheng-Jun Xia

At present, the only experimental access to the properties of cold, dense strongly interacting matter is provided by astrophysical observations. Neutron stars are the only known systems in the Universe that reach densities several times…

High Energy Astrophysical Phenomena · Physics 2026-04-30 Gábor Kasza , János Takátsy , György Wolf

We construct the equation of state (EOS) of dense matter covering a wide range of temperature, proton fraction, and density for the use of core-collapse supernova simulations. The study is based on the relativistic mean-field (RMF) theory,…

High Energy Astrophysical Phenomena · Physics 2012-03-26 H. Shen , H. Toki , K. Oyamatsu , K. Sumiyoshi

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 dynamics in mergers of binary neutron star (BNS) systems depend sensitively on the equation of state (EOS) of dense matter. This has profound implications on the emission of gravitational waves (GWs) and the ejection of matter in the…

High Energy Astrophysical Phenomena · Physics 2023-12-22 Maximilian Jacobi , Federico Maria Guercilena , Sabrina Huth , Giacomo Ricigliano , Almudena Arcones , Achim Schwenk

In view of the great uncertainty of the equation of state (EOS) of high-density nuclear matter, establishing EOS-independent universal relations between global properties of neutron stars provides a practical way to constrain the…

High Energy Astrophysical Phenomena · Physics 2025-03-07 Zehan Wu , Dehua Wen

Gravitational waves (GWs) provide unobscured insight into the birthplace of neutron stars (NSs) and black holes in core-collapse supernovae (CCSNe). The nuclear equation of state (EOS) describing these dense environments is yet uncertain,…

High Energy Astrophysical Phenomena · Physics 2022-01-05 Oliver Eggenberger Andersen , Shuai Zha , André da Silva Schneider , Aurore Betranhandy , Sean M. Couch , Evan P. O'Connor

Uncertainties in our knowledge of the properties of dense matter near and above nuclear saturation density are among the main sources of variations in multi-messenger signatures predicted for core-collapse supernovae (CCSNe) and the…

High Energy Astrophysical Phenomena · Physics 2019-11-13 A. S. Schneider , L. F. Roberts , C. D. Ott , E. O'connor

In a compressed Nuclear Matter (NM) an increasing pressure between the nucleons starts to increase the ratio of a nucleon Fermi to average single particle energy and in accordance with the Hugenholtz-van Hove theorem the longitudinal…

Nuclear Theory · Physics 2014-05-06 J. Rozynek

We present the results of 3D, high-resolution calculations of neutron star mergers. Using Newtonian gravity, but adding the forces from the emission of gravitational waves, we solve the hydrodynamics equations using the smoothed particle…

Astrophysics · Physics 2016-02-09 S. Rosswog , M. B. Davies

The proper understanding of the equation of state (EoS) of highly asymmetric nuclear matter is essential when studying systems such as neutron stars (NSs). Using zero-range Skyrme interactions and finite-range interactions such as Gogny…

Nuclear Theory · Physics 2020-03-03 Claudia Gonzalez-Boquera

We investigate properties of nuclear matter, equation of state (EOS) of neutron stars and its mass-radius relation in a hard-wall AdS/QCD model by regarding baryons as solitonic configurations in gauge fields. Compared with previous…

Nuclear Theory · Physics 2025-11-07 Jun-Shuai Wang , Li-Kang Yang , Yin-Fang Liu , Yong-Liang Ma

Recently, in Malik23, a dataset of several EoS for purely nucleonic stellar matter based on a non-linear RMF model prescription, and constrained to properties of nuclear matter, to state-of-the-art chiral effective field theory calculations…

Nuclear Theory · Physics 2024-09-25 Tuhin Malik , Helena Pais , Constança Providência

Magnetic field of rotating pulsar might be so strong that the equation of state (EOS) of neutron star (NS) matter is significantly affected by the spin polarization of baryons. In the present work, the EOS of the spin-polarized nuclear…

Nuclear Theory · Physics 2020-11-04 Ngo Hai Tan , Dao T. Khoa , Doan Thi Loan

In this work, we investigate neutron stars (NSs) in the strong field regime within the framework of symmetric teleparallel $f(Q)$ gravity, considering three representative models: linear, logarithmic, and exponential. While Bayesian studies…

General Relativity and Quantum Cosmology · Physics 2026-02-19 Sneha Pradhan , N. K. Patra , Kai Zhou , P. K. Sahoo

The study of the equation-of-state (EoS) describing the properties of nuclear matter away from the normal conditions is a relevant and intriguing topic of modern nuclear physics. The last decades have witnessed a substantial experimental…

Nuclear Experiment · Physics 2023-03-09 P. Russotto , M. D. Cozma , E. De Filippo , A. Le Fèvre , Y. Leifels , J. Łukasik
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