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Gravitational waves from the final stages of inspiralling binary neutron stars are expected to be one of the most important sources for ground-based gravitational wave detectors. The masses of the components are determinable from the…

太阳与恒星天体物理 · 物理学 2014-02-25 Sergey Postnikov , Madappa Prakash , James Lattimer

With the remarkable advent of gravitational-wave astronomy, we have shed light on previously shrouded events: compact binary coalescences. Neutron stars are promising (and confirmed) sources of gravitational radiation and it proves timely…

高能天体物理现象 · 物理学 2021-09-20 Fabian Gittins

Modelling as a dipole the magnetic interaction of a binary system of neutron stars, we are able to include the magnetic effects in the Newtonian and in the inspiral dynamics of the system using an equivalent one-body description.…

广义相对论与量子宇宙学 · 物理学 2022-11-30 Mariana Lira , Juan Carlos Degollado , Claudia Moreno , Darío Núñez

The tidal deformation of a neutron star in a binary inspiral driven by the emission of gravitational waves affects the orbital dynamics and produces a measurable modulation of the waves. Late in the inspiral, a regime of dynamical tides…

广义相对论与量子宇宙学 · 物理学 2025-06-11 Tristan Pitre , Eric Poisson

Finite size effects come into play during the late stages of neutron star binary inspiral, with the tidal deformability of the supranuclear density matter leaving an imprint on the gravitational-wave signal. As demonstrated in the case of…

高能天体物理现象 · 物理学 2020-04-08 N. Andersson , P. Pnigouras

This article is intended for undergraduate students with the aim to provide a pedagogical introduction to the physics of stellar tidal deformations. The spherically symmetric shape of any star is deformed via rotation around an arbitrary…

高能天体物理现象 · 物理学 2020-07-02 Andreas Zacchi

We study how to extract information on the neutron star equation of state from the gravitational wave signal emitted during the coalescence of a binary system composed of two neutron stars or a neutron star and a black hole. We use…

广义相对论与量子宇宙学 · 物理学 2015-06-17 Andrea Maselli , Leonardo Gualtieri , Valeria Ferrari

Inspirals of neutron star-neutron star binaries are a promising source of gravitational waves for gravitational wave detectors like LIGO. During the inspiral, the tidal gravitational field of one of the stars can resonantly excite internal…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Prakash Balachandran , Eanna E. Flanagan

The excitation of $f$-mode in a neutron star member of coalescing binaries accelerates the merger course, and thereby introduces a phase shift in the gravitational waveform. Emphasising on the tidal phase shift by aligned, rotating stars,…

广义相对论与量子宇宙学 · 物理学 2022-10-12 Hao-Jui Kuan , Kostas D. Kokkotas

We systematically study the tidal deformability for neutron and hyperon stars using relativistic mean field (RMF) equations of state (EOSs). The tidal effect plays an important role during the early part of the evolution of compact…

核理论 · 物理学 2017-01-11 Bharat Kumar , S. K. Biswal , S. K. Patra

We study the effect of tidal forcing on gravitational wave signals from tidally relaxed white dwarf pairs in the LISA, DECIGO and BBO frequency band ($0.1-100\,{\rm mHz}$). We show that for stars not in hydrostatic equilibrium (in their own…

高能天体物理现象 · 物理学 2020-01-08 L. O. McNeill , Rosemary A. Mardling , B. Müller

The gravitational waves (GWs) emitted by neutron star binaries probe the physics of matter at supra nuclear densities. During the late inspiral, tidal deformations raised on each star by the gravitational field of its companion depend…

广义相对论与量子宇宙学 · 物理学 2024-09-19 Justin L. Ripley , Abhishek Hegade K. R. , Rohit S. Chandramouli , and Nicolas Yunes

The gravitational wave signal from a binary neutron star merger carries the imprint of the deformability properties of the coalescing bodies, and then of the equation of state of neutron stars. In current models of the waveforms emitted in…

广义相对论与量子宇宙学 · 物理学 2022-07-20 Gonçalo Castro , Leonardo Gualtieri , Andrea Maselli , Paolo Pani

One of the main targets for ground-based gravitational wave (GW) detectors such as Advanced LIGO (Laser Interferometer Gravitational wave Observatory) and Virgo is coalescences of neutron star (NS) binaries. Even though a NS's macroscopic…

广义相对论与量子宇宙学 · 物理学 2019-05-09 Yong-Beom Choi , Hee-Suk Cho , Chang-Hwan Lee , Young-Min Kim

Gravitational waves emitted by binary neutron stars (BNS) provide information about the internal structure of neutron stars (NSs), helping to verify dense matter equations of state. We investigate how the measurement accuracy of NS's tidal…

广义相对论与量子宇宙学 · 物理学 2026-03-10 Gyeongbin Park , Chang-Hwan Lee , Hee-Suk Cho

In coalescing neutron star (NS) binaries, tidal force can resonantly excite low-frequency (< 500 Hz) oscillation modes in the NS, transferring energy between the orbit and the NS. This resonant tide can induce phase shift in the…

高能天体物理现象 · 物理学 2017-10-11 Wenrui Xu , Dong Lai

The investigation of the phase state of dense matter is hindered by complications of first-principle nonperturbative quantum chromodynamics. By performing the first consistent general-relativistic calculations of tidal-excited g-mode of…

核理论 · 物理学 2024-03-19 Zhiqiang Miao , Enping Zhou , Ang Li

Combining new gravitational waveforms derived by long-term (14--16 orbits) numerical-relativity simulations with waveforms by an effective-one-body (EOB) formalism for coalescing binary neutron stars, we construct hybrid waveforms and…

广义相对论与量子宇宙学 · 物理学 2016-04-20 Kenta Hotokezaka , Koutarou Kyutoku , Yu-ichiro Sekiguchi , Masaru Shibata

The distance-inclination degeneracy limits gravitational-wave parameter estimation of compact binary mergers. Although the degeneracy can be partially broken by including higher-order modes or precession, these effects are suppressed in…

广义相对论与量子宇宙学 · 物理学 2023-02-13 Yiqi Xie , Deep Chatterjee , Gilbert Holder , Daniel E. Holz , Scott Perkins , Kent Yagi , Nicolás Yunes

It has recently been suggested that the tidal deformation of a neutron star excites daughter p- and g-modes to large amplitudes via a quasi-static instability. This would remove energy from the tidal bulge, resulting in dissipation and…

高能天体物理现象 · 物理学 2014-01-24 Tejaswi Venumadhav , Aaron Zimmerman , Christopher M. Hirata