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Related papers: Binary neutron star mergers: Effects of spin and p…

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Observations of the properties of multiple coalescing neutron stars will simultaneously provide insight into neutron star mass and spin distribution, the neutron star merger rate, and the nuclear equation of state. Not all merging binaries…

General Relativity and Quantum Cosmology · Physics 2020-01-08 Daniel Wysocki , Richard O'Shaughnessy , Leslie Wade , Jacob Lange

Binary neutron star (BNS) post-merger gravitational-wave emission can occur in the aftermath of a BNS merger -- provided the system avoids prompt collapse to a black hole -- as a quasistable hypermassive remnant experiences quadrupolar…

We perform long-term simulations of spinning binary neutron stars, with our highest dimensionless spin being $\chi \sim 0.32$. To assess the importance of spin during the inspiral we vary the spin, and also use two equations of state, one…

General Relativity and Quantum Cosmology · Physics 2019-08-07 Antonios Tsokaros , Milton Ruiz , Vasileios Paschalidis , Stuart L. Shapiro , Kōji Uryū

We study the merger of binary neutron stars using different realistic, microphysical nuclear equations of state, as well as incorporating magnetic field and neutrino cooling effects. In particular, we concentrate on the influence of the…

General Relativity and Quantum Cosmology · Physics 2015-09-02 C. Palenzuela , S. L. Liebling , D. Neilsen , L. Lehner , O. L. Caballero , E. O'Connor , M. Anderson

Measurements of the properties of binary neutron star systems from gravitational-wave observations require accurate theoretical models for such signals. However, current models are incomplete, as they do not take into account all of the…

General Relativity and Quantum Cosmology · Physics 2018-11-07 Reetika Dudi , Francesco Pannarale , Tim Dietrich , Mark Hannam , Sebastiano Bernuzzi , Frank Ohme , Bernd Bruegmann

Accurate modeling of the multi-messenger signatures connected to binary neutron star mergers requires proper knowledge on the final remnant's fate and the conditions under which black holes (BHs) can form in such mergers. In this article,…

High Energy Astrophysical Phenomena · Physics 2024-03-04 Federico Schianchi , Maximiliano Ujevic , Anna Neuweiler , Henrique Gieg , Ivan Markin , Tim Dietrich

We show that the maximum and the minimum mass of merging neutron stars can be estimated with upcoming gravitational wave observations. We simulate populations of binary neutron star signals and model their mass distribution including upper…

High Energy Astrophysical Phenomena · Physics 2020-09-30 Katerina Chatziioannou , Will M. Farr

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

The dynamics of a binary neutron stars merger is governed by physics under the most extreme conditions, including strong spacetime curvature, ultra-high matter densities, luminous neutrino emission and the rapid amplification of the initial…

High Energy Astrophysical Phenomena · Physics 2025-09-17 Ricard Aguilera-Miret , Jan-Erik Christian , Stephan Rosswog , Carlos Palenzuela

We construct new, multivariate empirical relations for measuring neutron star radii and tidal deformabilities from the dominant gravitational wave frequency in the post-merger phase of binary neutron star mergers. The relations determine…

General Relativity and Quantum Cosmology · Physics 2020-04-29 Stamatis Vretinaris , Nikolaos Stergioulas , Andreas Bauswein

The precise measurement of neutron star (NS) spins can provide important insight into the formation and evolution of compact binaries containing NS. While traditional methods of NS spin measurement rely on pulsar observations, gravitational…

High Energy Astrophysical Phenomena · Physics 2024-08-01 Ish Gupta

The post-merger gravitational wave (GW) emission from a binary neutron star merger is expected to provide exciting new constraints on the dense-matter equation of state (EoS). Such constraints rely, by and large, on the existence of…

High Energy Astrophysical Phenomena · Physics 2022-07-20 Carolyn A. Raithel , Elias R. Most

Binary neutron star mergers, which can lead to less massive black holes relative to other known astrophysical channels, have the potential to probe modifications to general relativity that arise at smaller curvature scales compared to more…

General Relativity and Quantum Cosmology · Physics 2022-11-29 William E. East , Frans Pretorius

The binary neutron star (BNS) mass distribution measured with gravitational-wave observations has the potential to reveal information about the dense matter equation of state, supernova physics, the expansion rate of the universe, and tests…

High Energy Astrophysical Phenomena · Physics 2022-02-16 Sylvia Biscoveanu , Colm Talbot , Salvatore Vitale

Spinning neutron stars (NSs) can emit continuous gravitational waves (GWs) that carry a wealth of information about the compact object. If such a signal is detected, it will provide us with new insight into the physical properties of matter…

General Relativity and Quantum Cosmology · Physics 2023-09-12 Wen-Fan Feng , Tan Liu , Jie-Wen Chen , Yan Wang , Soumya D. Mohanty

We present results from three-dimensional general relativistic simulations of binary neutron star coalescences and mergers using public codes. We considered equal mass models where the baryon mass of the two Neutron Stars (NS) is…

General Relativity and Quantum Cosmology · Physics 2016-08-09 Francesco Maione , Roberto De Pietri , Alessandra Feo , Frank Löffler

We study the gravitational-wave peak luminosity and radiated energy of quasicircular neutron star mergers using a large sample of numerical relativity simulations with different binary parameters and input physics. The peak luminosity for…

General Relativity and Quantum Cosmology · Physics 2018-03-21 Francesco Zappa , Sebastiano Bernuzzi , David Radice , Albino Perego , Tim Dietrich

Neutron star-black hole binaries are among the strongest sources of gravitational waves detectable by current observatories. They can also power bright electromagnetic signals (gamma-ray bursts, kilonovae), and may be a significant source…

Gravitational waves emitted from the coalescence of neutron star binaries open a new window to probe matter and fundamental physics in unexplored, extreme regimes. To extract information about the supranuclear matter inside neutron stars…

General Relativity and Quantum Cosmology · Physics 2021-03-10 Tim Dietrich , Tanja Hinderer , Anuradha Samajdar

The gravitational radiation emitted during the merger of a black hole with a neutron star is rather similar to the radiation from the merger of two black holes when the neutron star is not tidally disrupted. When tidal disruption occurs,…

General Relativity and Quantum Cosmology · Physics 2015-10-28 Francesco Pannarale , Emanuele Berti , Koutarou Kyutoku , Benjamin D. Lackey , Masaru Shibata
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