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We study the properties of remnants formed in prompt-collapse binary neutron star mergers. We consider non-spinning binaries over a range of total masses and mass ratios across a set of 22 equations of state, totaling 107 numerical…

General Relativity and Quantum Cosmology · Physics 2025-07-28 Arnab Dhani , Alessandro Camilletti , David Radice , Rahul Kashyap , Bangalore Sathyaprakash , Domenico Logoteta , Albino Perego

We perform a Bayesian analysis of the maximum mass $M_{\rm TOV}$ of neutron stars with a quark core, incorporating the observational data from tidal deformability of the GW170817 binary neutron star merger as detected by LIGO/Virgo and the…

High Energy Astrophysical Phenomena · Physics 2021-08-25 Ang Li , Zhiqiang Miao , Sophia Han , Bing Zhang

The equation of state (EOS) of dense matter has been a long-sought goal of nuclear physics. Equations of state generate unique mass versus radius (M-R) relations for neutron stars, the ultra-dense remnants of stellar evolution. In this…

Nuclear Theory · Physics 2015-06-05 Andrew W. Steiner , James M. Lattimer , Edward F. Brown

Multi-messenger observations of coalescing binary neutron stars (BNSs) are a direct probe of the expansion history of the universe and carry the potential to shed light on the disparity between low- and high-redshift measurements of the…

Cosmology and Nongalactic Astrophysics · Physics 2024-12-20 Michael Müller , Suvodip Mukherjee , Geoffrey Ryan

We investigate radial oscillations of pure neutron stars and hybrid stars, employing equations of state of nuclear matter from Brueckner-Hartree-Fock theory, and of quark matter from the Dyson-Schwinger quark model, performing a Gibbs…

Nuclear Theory · Physics 2021-05-12 Ting-Ting Sun , Zi-Yue Zheng , Huan Chen , G. Fiorella Burgio , Hans-Josef Schulze

The discovery of two neutron stars with gravitational masses $\approx 2~M_\odot$ has placed a strong lower limit on the maximum mass of nonrotating neutron stars, and with it a strong constraint on the properties of cold matter beyond…

High Energy Astrophysical Phenomena · Physics 2015-08-19 Scott Lawrence , Justin G. Tervala , Paulo F. Bedaque , M. Coleman Miller

Binary neutron star mergers, such as the multimessenger GW170817 event, may produce hypermassive compact objects which are supported against collapse by the internal circulation of the fluid within the star. We compute their unstable modes…

General Relativity and Quantum Cosmology · Physics 2020-11-03 Peter B. Rau , Armen Sedrakian

An isovector-scalar meson is incorporated self-consistently into the quark-meson coupling description of nuclear matter and its most prominent effects on the structure of neutron stars are investigated. The recent measurement of GW170817 is…

Nuclear Theory · Physics 2019-08-07 T. F. Motta , A. M. Kalaitzis , S. Antić , P. A. M. Guichon , J. R. Stone , A. W. Thomas

Using the nuclear equation of states for a large variety of relativistic and non-relativistic force parameters, we calculate the static and rotating masses and radii of neutron stars. From these equation of states, we also evaluate the…

Solar and Stellar Astrophysics · Physics 2013-12-23 Shailesh K. Singh , S. K. Biswal , M. Bhuyan , T. K. Jha , S. K. Patra

Neutron stars are unique cosmic laboratories for the exploration of matter under extreme conditions of density and neutron-proton asymmetry. Due to their enormous dynamic range, neutron stars display a myriad of exotic states of matter that…

Nuclear Theory · Physics 2018-05-18 J. Piekarewicz

Microscopic calculations of neutron matter based on nuclear interactions derived from chiral effective field theory, combined with the recent observation of a 1.97 +- 0.04 M_sun neutron star, constrain the equation of state of neutron-rich…

Solar and Stellar Astrophysics · Physics 2013-07-23 K. Hebeler , J. M. Lattimer , C. J. Pethick , A. Schwenk

Recent observations have accumulated compelling evidence that some short gamma-ray bursts (SGRBs) are associated with the mergers of neutron star (NS) binaries. This would indicate that the SGRB event is associated with a gravitational-wave…

Cosmology and Nongalactic Astrophysics · Physics 2013-07-11 Samaya Nissanke , Daniel E. Holz , Neal Dalal , Scott A. Hughes , Jonathan L. Sievers , Christopher M. Hirata

The binary neutron-star merger event, GW170817, has cast a new light on nuclear physics research. Using a neutron-star model that includes a crust equation of state (EoS), we calculate the properties of a 1.4 solar-mass neutron star. The…

Nuclear Theory · Physics 2019-09-04 C. Y. Tsang , M. B. Tsang , Pawel Danielewicz , W. G. Lynch , F. J. Fattoyev

In 2017, LIGO-Virgo collaborations reported detection of the first neutron star merger event, GW170817, which is accompanied by electromagnetic counterparts from radio to gamma rays. Although high-energy neutrinos were not detected from…

High Energy Astrophysical Phenomena · Physics 2019-06-12 Shigeo S. Kimura

Following the historical observation of GW170817 and its electromagnetic follow-up, new neutron star merger afterglows are expected to be observed as counterparts to gravitational wave signals during the next science runs of the…

High Energy Astrophysical Phenomena · Physics 2020-03-25 Raphaël Duque , Robert Mochkovitch , Frédéric Daigne

The remnant star of a neutron star merger is an anticipated loud source of kiloHertz gravitational waves that conveys unique information on the equation of state of hot matter at extreme densities. Observations of such signals are hampered…

General Relativity and Quantum Cosmology · Physics 2020-01-22 Matteo Breschi , Sebastiano Bernuzzi , Francesco Zappa , Michalis Agathos , Albino Perego , David Radice , Alessandro Nagar

We show how to coherently combine information from a population of sub-threshold, gravitational-wave binary neutron star post-merger remnants. Although no individual event in our synthetic population can be claimed as a confident detection,…

General Relativity and Quantum Cosmology · Physics 2026-04-21 Fiona H. Panther , Paul D. Lasky

The understanding of neutron star equation of state hinges on a comprehensive analysis of multi-messenger, multi-wavelength data. The recent scrutiny of PSR J0030+0451 data by NICER introduces complexities, unveiling a tension with another…

High Energy Astrophysical Phenomena · Physics 2024-06-05 Zhiqiang Miao , Liqiang Qi , Juan Zhang , Ang Li , Mingyu Ge

Black hole-neutron star mergers resulting in the disruption of the neutron star and the formation of an accretion disk and/or the ejection of unbound material are prime candidates for the joint detection of gravitational-wave and…

Following the detection of the GW170817 signal and its associated electromagnetic emissions, we discuss the prospects of the local Hubble parameter measurement using double neutron stars (DNSs). The kilonova emissions of GW170817 are…

Cosmology and Nongalactic Astrophysics · Physics 2018-01-24 Naoki Seto , Koutarou Kyutoku
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