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Matching gravitational-wave observations of binary neutron stars with theoretical model predictions reveals important information about the sources, such as the masses and the distance to the stars. The latter can be used to determine the…

General Relativity and Quantum Cosmology · Physics 2024-08-16 Nina Kunert , Jonathan Gair , Peter T. H. Pang , Tim Dietrich

We present an effective, low-dimensionality frequency-domain template for the gravitational wave signal from the stellar remnants from binary neutron star coalescence. A principal component decomposition of a suite of numerical simulations…

High Energy Astrophysical Phenomena · Physics 2016-04-13 James Alexander Clark , Andreas Bauswein , Nikolaos Stergioulas , Deirdre Shoemaker

Accurate information from gravitational wave signals from coalescing binary neutron stars provides essential input to downstream interpretations, including inference of the neutron star population and equation of state. However, even…

General Relativity and Quantum Cosmology · Physics 2024-04-26 A. B. Yelikar , R. O' Shaughnessy , J. Lange , A. Z. Jan

We report results of numerical relativity simulations for {\it new} 26 non-spinning binary neutron star systems with 6 grid resolutions using an adaptive mesh refinement numerical re\ lativity code {\tt SACRA-MPI}. The finest grid spacing…

High Energy Astrophysical Phenomena · Physics 2020-04-08 Kenta Kiuchi , Kyohei Kawaguchi , Koutarou Kyutoku , Yuichiro Sekiguchi , Masaru Shibata

Recent detections by the gravitational wave facilities LIGO/Virgo have opened a window to study the internal structure of neutron stars through the gravitational waves emitted during their coalescence. In this work we explore, through…

General Relativity and Quantum Cosmology · Physics 2019-09-26 Miguel Bezares , Daniele Viganò , Carlos Palenzuela

The first detection of gravitational waves from the binary neutron star merger GW170817 by the LIGO-Virgo Collaboration has provided fundamental new insights into the astrophysical site for r-process nucleosynthesis and on the nature of…

General Relativity and Quantum Cosmology · Physics 2021-03-10 Grant J. Mathews , In-Saeng Suh , N. Q. Lan , Atul Kedia

For the analysis of gravitational-wave signals, fast and accurate gravitational-waveform models are required. These enable us to obtain information on the system properties from compact binary mergers. In this article, we introduce the…

General Relativity and Quantum Cosmology · Physics 2024-07-17 Adrian Abac , Tim Dietrich , Alessandra Buonanno , Jan Steinhoff , Maximiliano Ujevic

We present a robust method to characterize the gravitational wave emission from the remnant of a neutron star coalescence. Our approach makes only minimal assumptions about the morphology of the signal and provides a full posterior…

General Relativity and Quantum Cosmology · Physics 2018-01-03 Katerina Chatziioannou , James Alexander Clark , Andreas Bauswein , Margaret Millhouse , Tyson B. Littenberg , Neil Cornish

We review the current status of studies of the coalescence of binary neutron star systems. We begin with a discussion of the formation channels of merging binaries and we discuss the most recent theoretical predictions for merger rates.…

General Relativity and Quantum Cosmology · Physics 2015-06-04 Joshua A. Faber , Frederic A. Rasio

The gravitational wave signal emitted during the coalescence of two neutron stars carries information about the stars' internal structure. During the long inspiral phase the main matter observable is the tidal interaction between the binary…

General Relativity and Quantum Cosmology · Physics 2022-05-13 Marcella Wijngaarden , Katerina Chatziioannou , Andreas Bauswein , James A. Clark , Neil J. Cornish

The data analysis of the gravitational wave signals emitted by coalescing neutron star binaries requires the availability of an accurate analytical representation of the dynamics and waveforms of these systems. We propose an…

General Relativity and Quantum Cosmology · Physics 2015-05-15 Sebastiano Bernuzzi , Alessandro Nagar , Tim Dietrich , Thibault Damour

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

In numerical simulations of binary neutron star systems, the equation of state of the dense neutron star matter is an important factor in determining both the physical realism and the numerical accuracy of the simulations. Some equations of…

High Energy Astrophysical Phenomena · Physics 2023-07-10 Alexander Knight , Francois Foucart , Matthew D. Duez , Mike Boyle , Lawrence E. Kidder , Harald P. Pfeiffer , Mark A. Scheel

This a particularly exciting time for gravitational wave physics. Ground-based gravitational wave detectors are now operating at a sensitivity such that gravitational radiation may soon be directly detected, and recently several groups have…

General Relativity and Quantum Cosmology · Physics 2008-11-26 John G. Baker , Manuela Campanelli , Frans Pretorius , Yosef Zlochower

We present a new numerical relativity code designed for simulations of compact binaries involving matter. The code is an upgrade of the BAM code to include general relativistic hydrodynamics and implements state-of-the-art…

General Relativity and Quantum Cosmology · Physics 2011-08-12 Marcus Thierfelder , Sebastiano Bernuzzi , Bernd Bruegmann

To enable detection and maximise the physics output of gravitational wave observations from compact binary systems, it is crucial the availability of accurate waveform models. The present work aims at giving an overview for non-experts of…

General Relativity and Quantum Cosmology · Physics 2021-09-22 Soichiro Isoyama , Riccardo Sturani , Hiroyuki Nakano

The gravitational waveform of merging binary neutron stars encodes information about extreme states of matter. Probing these gravitational emissions requires the gravitational-wave detectors to have high sensitivity above 1 kHz. Fortunately…

General Relativity and Quantum Cosmology · Physics 2018-09-12 Haixing Miao , Huan Yang , Denis Martynov

Black hole-neutron star binary mergers display a much richer phenomenology than black hole-black hole mergers, even in the relatively simple case - considered in this paper - in which both the black hole and the neutron star are…

General Relativity and Quantum Cosmology · Physics 2015-06-16 Francesco Pannarale , Emanuele Berti , Koutarou Kyutoku , Masaru Shibata

Mergers of binary neutron stars and black hole-neutron star binaries are one of the most promising sources for the ground-based gravitational-wave (GW) detectors and also a high-energy astrophysical phenomenon as illustrated by the…

High Energy Astrophysical Phenomena · Physics 2019-08-08 Masaru Shibata , Kenta Hotokezaka

Accurate and reliable gravitational waveform models are crucial in determining the properties of compact binary mergers. In particular, next-generation gravitational-wave detectors will require more accurate waveforms to avoid biases in the…

General Relativity and Quantum Cosmology · Physics 2025-10-21 Adrian Abac , Felip A. Ramis Vidal , Marta Colleoni , Anna Puecher , Alejandra Gonzalez , Tim Dietrich