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Gravitational waves emitted from the binary neutron star (BNS) systems can carry information about the dense matter phase in these compact stars. The crust-core interfacial mode is an oscillation mode in a neutron star and it depends mostly…

High Energy Astrophysical Phenomena · Physics 2023-05-03 Jiaxiang Zhu , Chuming Wang , Chengjun Xia , Enping Zhou , Yiqiu Ma

With the remarkable advent of gravitational-wave astronomy, we have shed light on previously shrouded events: compact binary coalescences. Neutron stars are promising (and confirmed) sources of gravitational radiation and it proves timely…

High Energy Astrophysical Phenomena · Physics 2021-09-20 Fabian Gittins

Recent equations of state for dense nuclear matter are discussed with possible phase transitions arising in neutron stars such as pion, kaon and hyperon kondensation, superfluidity and quark matter. Specifically, we treat the nuclear to…

Nuclear Theory · Physics 2009-10-31 H. Heiselberg , M. Hjorth-Jensen

In this review we highlight a few physical properties of neutron stars and their theoretical treatment inasmuch as they can be useful for nuclear and particle physicists concerned with matter at finite density (and newly, temperature).…

Nuclear Theory · Physics 2021-03-23 Felipe J. Llanes-Estrada , Eva Lope-Oter

One of the uncertainties in nuclear physics is whether a phase transition between hadronic nuclear matter to quark matter exists in supranuclear matter equations of state. Such a feature can be probed via gravitational-wave signals from…

High Energy Astrophysical Phenomena · Physics 2021-03-17 Shu Yan Lau , Kent Yagi

The fundamental constituent of matter at high temperature and density has intrigued physicists for quite some time. Recent results from heavy-ion colliders have enriched the Quantum Chromodynamics phase diagram at high temperatures and low…

High Energy Astrophysical Phenomena · Physics 2023-01-11 Ritam Mallick

Binary neutron star mergers are expected to be one of the most promising source of gravitational waves (GW) for the network of laser interferometric and bar detectors becoming operational in the next few years. The merger wave signal is…

Astrophysics · Physics 2015-06-24 R. Oechslin , G. Poghosyan , K. Uryu

Gravitational waves from the final stages of inspiralling binary neutron stars are expected to be one of the most important sources for ground-based gravitational wave detectors. The masses of the components are determinable from the…

Solar and Stellar Astrophysics · Physics 2014-02-25 Sergey Postnikov , Madappa Prakash , James Lattimer

The interiors of neutron stars enjoy ideal conditions for the conversion of hadrons to a strange quark phase, theorized to be the stablest form of matter. Though numerous astrophysical means to prompt such a deconfinement phase transition…

High Energy Physics - Phenomenology · Physics 2025-07-16 Aryaman Bhutani , Nirmal Raj , Zenia Zuraiq

In this letter, we report a new phenomena of recurring regions when relating observables for hybrid neutron stars and hybrid neutron-star mergers. To describe dense matter within hybrid stars, we introduce a percolation to vary the size and…

High Energy Astrophysical Phenomena · Physics 2025-07-02 Alexander Clevinger , Zidu Lin , Milena Albino , Peter Hammond , Veronica Dexheimer , Andrew Steiner

The past years have witnessed tremendous progress in understanding the properties of neutron stars and of the dense matter in their cores, made possible by electromagnetic observations of neutron stars and the detection of gravitational…

The transition from hadronic matter to quark matter in the core of neutron stars is likely to be associated with the appearance of a mixed phase, leading to a smooth variation of the star density profile. We discuss the results of a…

Astrophysics · Physics 2009-11-10 Omar Benhar , Roberto Rubino

For the past 20 years it had been thought that the coexistence phase of the confined hadronic and quark matter phases, assumed to be a first order transition, was strictly excluded from neutron stars. This, however, was due to a seemingly…

Astrophysics · Physics 2007-05-23 Fridolin Weber , Norman K. Glendenning , Shouyong Pei

The observation and distinction of two compact stars with an identical mass but a different radius would be a clear sign of hadron-quark phase transition in nuclear matter. Motivated by studies searching for significant deviations in the…

Nuclear Theory · Physics 2023-06-21 P. Laskos-Patkos , Ch. C. Moustakidis

The properties of matter at ultra-high densities, low temperatures, and with a significant asymmetry between protons and neutrons can be studied exclusively through astrophysical observations of neutron stars. We show that measurements of…

High Energy Astrophysical Phenomena · Physics 2010-02-16 Feryal Ozel , Dimitrios Psaltis

The gravitational wave and electromagnetic signatures connected to the merger of two neutron stars allow us to test the nature of matter at supranuclear densities. Since the Equation of State governing the interior of neutron stars is only…

General Relativity and Quantum Cosmology · Physics 2019-08-09 Henrique Gieg , Tim Dietrich , Maximiliano Ujevic

Formed in the aftermath of gravitational core-collapse supernova explosions, neutron stars are unique cosmic laboratories for probing the properties of matter under extreme conditions that cannot be reproduced in terrestrial laboratories.…

Nuclear Theory · Physics 2019-03-06 David Blaschke , Nicolas Chamel

The internal composition of neutron stars is currently largely unknown. Due to the possibility of phase transitions in quantum chromodynamics, stars could be hybrid and have quark cores. We investigate some imprints of elastic quark phases…

High Energy Astrophysical Phenomena · Physics 2021-04-14 Jonas P. Pereira , Michał Bejger , Lucas Tonetto , Germán Lugones , Paweł Haensel , Julian Leszek Zdunik , Magdalena Sieniawska

In this work, we consider the properties of compact stars in which quark matter has low- and high-density phases that are separated by a first-order phase transition. Thus, unlike the commonly considered case of a single phase transition…

High Energy Astrophysical Phenomena · Physics 2023-03-27 Jia Jie Li , Armen Sedrakian , Mark Alford

We investigate how current and proposed observations of neutron stars can lead to an understanding of the state of their interiors and the key unknowns: the typical neutron star radius and the neutron star maximum mass. A theoretical…

Astrophysics · Physics 2008-11-26 James M. Lattimer , Maddapa Prakash