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The first detection of gravitational waves from a neutron star-neutron star merger, GW170817, has opened up a new avenue for constraining the ultradense-matter equation of state (EOS). The deviation of the observed waveform from a…

High Energy Astrophysical Phenomena · Physics 2019-06-26 Carolyn A. Raithel

The general behavior of the nuclear equation of state (EOS), relevant for the description of neutron stars (NS), is studied within a Bayesian approach applied to a set of models based on a density dependent relativistic mean field…

Nuclear Theory · Physics 2022-05-02 Tuhin Malik , Márcio Ferreira , B. K. Agrawal , Constança Providência

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

Inference of the equation-of-state (EoS) of dense nuclear matter in neutron-star cores is a principal science goal of X-ray and gravitational-wave observations of neutron stars. In particular, gravitational-wave observations provide an…

General Relativity and Quantum Cosmology · Physics 2023-01-25 Rahul Kashyap , Arnab Dhani , Bangalore Sathyaprakash

In the past few years, the detection of gravitational waves from compact binary coalescences with the Advanced LIGO and Advanced Virgo detectors has become routine. Future observatories will detect even larger numbers of gravitational-wave…

General Relativity and Quantum Cosmology · Physics 2021-08-11 Anuradha Samajdar , Justin Janquart , Chris Van Den Broeck , Tim Dietrich

Post-merger gravitational-wave emission from a binary neutron star merger carries crucial information about the equation of state (EoS) of matter at high temperatures. Current gravitational wave detectors have limited sensitivities at…

High Energy Astrophysical Phenomena · Physics 2025-05-29 Soham Mitra , Praveer Tiwari , Archana Pai

Latest general relativistic simulations for merger of binary neutron stars with realistic equations of state (EOSs) show that a hypermassive neutron star of an ellipsoidal figure is formed after the merger if the total mass is smaller than…

General Relativity and Quantum Cosmology · Physics 2009-11-11 Masaru Shibata

The expected volume of data from the third-generation gravitational waves (GWs) Einstein Telescope (ET) detector would make traditional GWs search methods such as match filtering impractical. This is due to the large template bank required…

Instrumentation and Methods for Astrophysics · Physics 2023-01-04 Wathela Alhassan , Tomasz Bulik , Mariusz Suchenek

We have conducted an extensive study using a diverse set of equations of state (EoSs) to uncover strong relationships between neutron star (NS) observables and the underlying EoS parameters using symbolic regression method. These EoS…

Nuclear Theory · Physics 2025-04-17 N. K. Patra , Tuhin Malik , Helena Pais , Kai Zhou , B. K. Agrawal , Constança Providência

The coalescence of binary neutron stars (BNS) is a prolific source of gravitational waves (GWs) and electromagnetic (EM) radiation, offering a dual observational window into the Universe. Lowering the signal-to-noise ratio (S/N) threshold…

High Energy Astrophysical Phenomena · Physics 2024-10-01 Yun-Fei Du , Emre Seyit Yorgancioglu , Jin-Hui Rao , Ankit Kumar , Shu-Xu Yi , Shuang-Nan Zhang , Shu Zhang

A relativistic jet has been produced in the single well-localised binary neutron star (BNS) merger detected to date in gravitational waves (GWs), and the local rates of BNS mergers and short gamma-ray bursts are of the same order of…

High Energy Astrophysical Phenomena · Physics 2022-10-26 O. S. Salafia , A. Colombo , F. Gabrielli , I. Mandel

Gravitational waves from coalescing neutron stars encode information about nuclear matter at extreme densities, inaccessible by laboratory experiments. The late inspiral is influenced by the presence of tides, which depend on the neutron…

High Energy Astrophysical Phenomena · Physics 2020-11-09 K. Ackley , V. B. Adya , P. Agrawal , P. Altin , G. Ashton , M. Bailes , E. Baltinas , A. Barbuio , D. Beniwal , C. Blair , D. Blair , G. N. Bolingbroke , V. Bossilkov , S. Shachar Boublil , D. D. Brown , B. J. Burridge , J. Calderon Bustillo , J. Cameron , H. Tuong Cao , J. B. Carlin , S. Chang , P. Charlton , C. Chatterjee , D. Chattopadhyay , X. Chen , J. Chi , J. Chow , Q. Chu , A. Ciobanu , T. Clarke , P. Clearwater , J. Cooke , D. Coward , H. Crisp , R. J. Dattatri , A. T. Deller , D. A. Dobie , L. Dunn , P. J. Easter , J. Eichholz , R. Evans , C. Flynn , G. Foran , P. Forsyth , Y. Gai , S. Galaudage , D. K. Galloway , B. Gendre , B. Goncharov , S. Goode , D. Gozzard , B. Grace , A. W. Graham , A. Heger , F. Hernandez Vivanco , R. Hirai , N. A. Holland , Z. J. Holmes , E. Howard , E. Howell , G. Howitt , M. T. Hübner , J. Hurley , C. Ingram , V. Jaberian Hamedan , K. Jenner , L. Ju , D. P. Kapasi , T. Kaur , N. Kijbunchoo , M. Kovalam , R. Kumar Choudhary , P. D. Lasky , M. Y. M. Lau , J. Leung , J. Liu , K. Loh , A. Mailvagan , I. Mandel , J. J. McCann , D. E. McClelland , K. McKenzie , D. McManus , T. McRae , A. Melatos , P. Meyers , H. Middleton , M. T. Miles , M. Millhouse , Y. Lun Mong , B. Mueller , J. Munch , J. Musiov , S. Muusse , R. S. Nathan , Y. Naveh , C. Neijssel , B. Neil , S. W. S. Ng , V. Oloworaran , D. J. Ottaway , M. Page , J. Pan , M. Pathak , E. Payne , J. Powell , J. Pritchard , E. Puckridge , A. Raidani , V. Rallabhandi , D. Reardon , J. A. Riley , L. Roberts , I. M. Romero-Shaw , T. J. Roocke , G. Rowell , N. Sahu , N. Sarin , L. Sarre , H. Sattari , M. Schiworski , S. M. Scott , R. Sengar , D. Shaddock , R. Shannon , J. SHI , P. Sibley , B. J. J. Slagmolen , T. Slaven-Blair , R. J. E. Smith , J. Spollard , L. Steed , L. Strang , H. Sun , A. Sunderland , S. Suvorova , C. Talbot , E. Thrane , D. Töyrä , P. Trahanas , A. Vajpeyi , J. V. van Heijningen , A. F. Vargas , P. J. Veitch , A. Vigna-Gomez , A. Wade , K. Walker , Z. Wang , R. L. Ward , K. Ward , S. Webb , L. Wen , K. Wette , R. Willcox , J. Winterflood , C. Wolf , B. Wu , M. Jet Yap , Z. You , H. Yu , J. Zhang , J. Zhang , C. Zhao , X. Zhu

Interpreting high-energy, astrophysical phenomena, such as supernova explosions or neutron-star collisions, requires a robust understanding of matter at supranuclear densities. However, our knowledge about dense matter explored in the cores…

We present a proof-of-concept study, based on numerical-relativity simulations, of how gravitational waves (GWs) from neutron star merger remnants can probe the nature of matter at extreme densities. Phase transitions and extra degrees of…

High Energy Astrophysical Phenomena · Physics 2017-06-16 David Radice , Sebastiano Bernuzzi , Walter Del Pozzo , Luke F. Roberts , Christian D. Ott

Exploiting a very large library of physically plausible equations of state (EOSs) containing more than $10^{7}$ members and yielding more than $10^{9}$ stellar models, we conduct a survey of the impact that a neutron-star radius measurement…

High Energy Astrophysical Phenomena · Physics 2019-08-16 Lukas R. Weih , Elias R. Most , Luciano Rezzolla

Using data from 289 numerical relativity simulations of merging binary neutron stars, we identify, for the first time, a robust quasi-universal relation connecting the postmerger peak gravitational-wave frequency and the value of the…

General Relativity and Quantum Cosmology · Physics 2022-05-04 Matteo Breschi , Sebastiano Bernuzzi , Daniel Godzieba , Albino Perego , David Radice

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

Binary neutron star mergers (NSMs) have been confirmed as one source of the heaviest observable elements made by the rapid neutron-capture (r-) process. However, modeling NSM outflows -- from the total ejecta masses to their elemental…

High Energy Astrophysical Phenomena · Physics 2022-03-02 Erika M. Holmbeck , Richard O'Shaughnessy , Vera Delfavero , Krzysztof Belczynski

Gravitational waves (GWs) from binary neutron star (BNS) merger remnants complement constraints from the inspiral phase, mass-radius measurements, and microscopic theory by providing information about the neutron-star equation of state…

High Energy Astrophysical Phenomena · Physics 2025-09-24 Christian Ecker , Tyler Gorda , Aleksi Kurkela , Luciano Rezzolla

Using an extended set of equations of state and a multiple-group multiple-code collaborative effort to generate waveforms, we improve numerical-relativity-based data-analysis estimates of the measurability of matter effects in neutron-star…

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