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Related papers: Resonant tides in binary neutron star mergers: ana…

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The gravitational-wave events GW170817 and GW190425 have led to a number of important insights on the equation of state of dense matter and the properties of neutron stars, such as their radii and the maximum mass. Some of these conclusions…

High Energy Astrophysical Phenomena · Physics 2022-04-20 L. Jens Papenfort , Elias R. Most , Samuel Tootle , Luciano Rezzolla

Gravitational waveforms from numerical simulations are a critical tool to test and analytically calibrate the waveform models used to study the properties of merging compact objects. In this paper, we present a series of high-accuracy…

In the violent post-merger of binary neutron-star mergers strong oscillations are present that impact the emitted gravitational-wave (GW) signal. The frequencies, temperatures and densities involved in these oscillations allow for…

General Relativity and Quantum Cosmology · Physics 2025-03-11 Michail Chabanov , Luciano Rezzolla

This paper presents an estimate for the spectral properties of the stochastic background of gravitational waves emitted by a population of hot, young, rapidly rotating neutron stars throughout the Universe undergoing $f$-mode instabilities,…

Cosmology and Nongalactic Astrophysics · Physics 2016-02-03 Marco Surace , Kostas D. Kokkotas , Pantelis Pnigouras

We present ${\tt NRPMw}$, an analytical model of gravitational-waves from neutron star merger remnants informed using 618 numerical relativity (NR) simulations. ${\tt NRPMw}$ is designed in the frequency domain using a combination of…

General Relativity and Quantum Cosmology · Physics 2022-05-19 Matteo Breschi , Sebastiano Bernuzzi , Kabir Chakravarti , Alessandro Camilletti , Aviral Prakash , Albino Perego

With the recent advent of multi-messenger gravitational-wave astronomy and in anticipation of more sensitive, next-generation gravitational-wave detectors, we investigate the dynamics, gravitational-wave emission, and nucleosynthetic yields…

General Relativity and Quantum Cosmology · Physics 2018-12-07 L. Jens Papenfort , Roman Gold , Luciano Rezzolla

With the first detections of binary neutron star mergers by gravitational-wave detectors, it proves timely to consider how the internal structure of neutron stars affects the way in which they can be asymmetrically deformed. Such…

High Energy Astrophysical Phenomena · Physics 2020-05-27 Fabian Gittins , Nils Andersson , Jonas P. Pereira

The dynamical tide can play an important role in the orbital motion of close eccentric double white dwarf binaries. As the launching of the space-based gravitational-wave detector, the Laser Interferometer Space Antenna (LISA), is just…

General Relativity and Quantum Cosmology · Physics 2024-05-24 Shu Yan Lau , Kent Yagi , Phil Arras

Future gravitational wave detections of merging binary neutron star systems have the possibility to tightly constrain the equation of state of dense nuclear matter. In order to extract such constraints, gravitational waveform models need to…

The successful detection of continuous gravitational waves from spinning neutron stars (NSs) will shape our understanding of the physical properties of dense matter under extreme conditions. Binary population synthesis simulations show that…

General Relativity and Quantum Cosmology · Physics 2025-02-14 Wen-Fan Feng , Tan Liu , Yan Wang , Lijing Shao

In rotating stars and planets, excitation of inertial waves in convective envelopes provides an important channel for tidal dissipation, but the dissipation rate due to inertial waves depends erratically on the tidal frequency. Tidal…

Fluid Dynamics · Physics 2021-09-29 Yufeng Lin , Gordon I. Ogilvie

Recent studies suggest that coalescing neutron stars are subject to a fluid instability involving the nonlinear coupling of the tide to $p$-modes and $g$-modes. Its influence on the inspiral dynamics and thus the gravitational wave signal…

High Energy Astrophysical Phenomena · Physics 2016-12-07 Reed Essick , Salvatore Vitale , Nevin N. Weinberg

Massive (hypermassive and supramassive) neutron stars are likely to be often formed after the merger of binary neutron stars. We explore the evolution process of the remnant massive neutron stars and gravitational waves emitted by them,…

High Energy Astrophysical Phenomena · Physics 2015-06-16 Kenta Hotokezaka , Kenta Kiuchi , Koutarou Kyutoku , Takayuki Muranushi , Yu-ichiro Sekiguchi , Masaru Shibata , Keisuke Taniguchi

Recent observation of the tidally-excited stellar oscillations in the main-sequence binary KOI-54 by the KEPLER satellite provides a unique opportunity for studying dynamical tides in eccentric binary systems. We develop a general theory of…

Solar and Stellar Astrophysics · Physics 2015-05-28 Jim Fuller , Dong Lai

Electromagnetic and gravitational-wave signals from neutron stars are shaped by rapid rotation and strong magnetic fields. Determining these properties is essential to interpret such signals, but current measurements are limited: rotation…

High Energy Astrophysical Phenomena · Physics 2025-09-15 Anson Ka Long Yip , Tjonnie Guang Feng Li

We calculate the tidal response of helium and carbon/oxygen (C/O) white dwarf (WD) binaries inspiraling due to gravitational wave emission. We show that resonance locks, previously considered in binaries with an early-type star, occur…

Solar and Stellar Astrophysics · Physics 2015-06-12 Joshua Burkart , Eliot Quataert , Phil Arras , Nevin N. Weinberg

We perform direct numerical simulations of the tidal encounter of a rotating planet on a highly eccentric or parabolic orbit about a central star formulated as an initial value problem. This approach enables us to extend previous work of…

Solar and Stellar Astrophysics · Physics 2015-05-19 J. C. B. Papaloizou , P. B. Ivanov

We study the tidal response of rotating solar mass stars, as well as more massive rotating stars, of different ages in the context of tidal captures leading to either giant exoplanets on close in orbits, or the formation of binary systems…

Solar and Stellar Astrophysics · Physics 2015-06-16 S. V. Chernov , J. C. B. Papaloizou , P. B. Ivanov

Gravitational waves from the collision of binary neutron stars provide a unique opportunity to study the behaviour of supranuclear matter, the fundamental properties of gravity, and the cosmic history of our Universe. However, given the…

General Relativity and Quantum Cosmology · Physics 2022-11-02 Gregory Ashton , Tim Dietrich

Accurate and fast gravitational waveform (GW) models are essential to extract information about the properties of compact binary systems that generate GWs. Building on previous work, we present an extension of the NRTidal model for binary…

General Relativity and Quantum Cosmology · Physics 2019-08-07 Tim Dietrich , Anuradha Samajdar , Sebastian Khan , Nathan K. Johnson-McDaniel , Reetika Dudi , Wolfgang Tichy