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Measurement of macroscopic properties of neutron stars, whether in binary or in an isolated system, provides us a key opportunity to place a stringent constraint on its equation of state. In this paper, we perform Bayesian model-selection…

高能天体物理现象 · 物理学 2022-03-28 Bhaskar Biswas

Gravitational wave (GW) astronomy has consolidated its role as a new observational window to reveal the properties of compact binaries in the Universe. In particular, the discovery of the first binary neutron star coalescence, GW170817, led…

广义相对论与量子宇宙学 · 物理学 2018-12-26 Anuradha Samajdar , Tim Dietrich

In this present work, we suggest studying neutron star with a conformal coupling by using the analytical expressions of realistic equations of state. The equations of perturbed and nonperturbed metrics, scalar field and the pressure of the…

广义相对论与量子宇宙学 · 物理学 2021-10-28 Hamza Boumaza

A set of equations of state obtained from finite-range Gogny forces and momentum-dependent interactions is used to investigate the recent observation of gravitational waves from the binary neutron star merger GW170817 event. For this set of…

核理论 · 物理学 2021-02-16 O. Lourenço , M. Bhuyan , C. H. Lenzi , M. Dutra , C. Gonzalez-Boquera , M. Centelles , X. Viñas

Gravitational waves emitted in the late inspiral of binary neutron stars are affected by their tidal deformation. We study the tidal dynamics in full general relativity through matched-asymptotic expansions and prove that the dynamical…

广义相对论与量子宇宙学 · 物理学 2026-03-17 Abhishek Hegade K. R. , K. J. Kwon , Tejaswi Venumadhav , Hang Yu , Nicolás Yunes

We develop a Bayesian analysis method for selecting the most probable equation of state under a set of constraints from compact star physics, which now include the tidal deformability from GW170817. We apply this method for the first time…

高能天体物理现象 · 物理学 2019-02-19 A. Ayriyan , D. Alvarez-Castillo , D. Blaschke , H. Grigorian

Gravitational-wave observations of neutron star mergers can probe the nuclear equation of state by measuring the imprint of the neutron star's tidal deformability on the signal. We investigate the ability of future gravitational-wave…

高能天体物理现象 · 物理学 2022-11-04 Daniel Finstad , Laurel V. White , Duncan A. Brown

The equation of state dependence of neutron star's astrophysical features modeling is key to our understanding of dense matter. However, there exists a series of almost equation-of-state independent relations reported in the literature,…

高能天体物理现象 · 物理学 2024-05-20 Lami Suleiman , Jocelyn Read

The chi-squared based covariance approach allows one to estimate the correlations among desired observables related to nuclear matter directly from a set of fit data without taking recourse to the distributions of the nuclear matter…

核理论 · 物理学 2020-11-11 Tuhin Malik , B. K. Agrawal , Constança Providência , J. N. De

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

Gravitational-wave signals from coalescing binary neutron stars can yield important information about the properties of nuclear-matter equation of state from the early part of the signal through tidal effects to the properties and…

高能天体物理现象 · 物理学 2021-09-13 Harry Ho-Yin Ng , Patrick Chi-Kit Cheong , Lap-Ming Lin , Tjonnie Guang Feng Li

Applying an equation of state (EOS) with its symmetric nuclear matter (SNM) contribution and low-density symmetry energy $E_{sym}(\rho)$ constrained by heavy-ion reaction data, we calculate the dimensionless tidal deformability $\Lambda$ of…

核理论 · 物理学 2019-06-05 Plamen G. Krastev , Bao-An Li

The first detection of gravitational waves from the binary neutron star merger event GW170817 has started to provide important new constraints on the nuclear equation of state at high density. The tidal deformability bound of GW170817…

高能天体物理现象 · 物理学 2019-05-29 Rana Nandi , Prasanta Char , Subrata Pal

The study of neutron star mergers by the detection of the emitted gravitational waves is one of the most promised tools to study the properties of dense nuclear matter at high densities. It is worth claiming that, at the moment, strong…

高能天体物理现象 · 物理学 2021-10-22 A. Kanakis-Pegios , P. S. Koliogiannis , Ch. C. Moustakidis

Gravitational waves from the merger of two neutron stars cannot be easily distinguished from those produced by a comparable-mass mixed binary in which one of the companions is a black hole. Low-mass black holes are interesting because they…

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…

广义相对论与量子宇宙学 · 物理学 2022-11-02 Gregory Ashton , Tim Dietrich

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

Relations between neutron star properties that do not depend on the nuclear equation of state offer insights on neutron star physics and have practical applications in data analysis. Such relations are obtained by fitting to a range of…

高能天体物理现象 · 物理学 2024-02-13 Isaac Legred , Bubakar O. Sy-Garcia , Katerina Chatziioannou , Reed Essick

Neutron stars are known to host extremely powerful magnetic fields. Among other effects, one of the consequences of harbouring such fields is the deformation of the neutron star structure, leading, together with rotation, to the emission of…

高能天体物理现象 · 物理学 2021-10-27 J. Soldateschi , N. Bucciantini , L. Del Zanna

The coalescence of two neutron stars is an important gravitational wave source for LIGO and other detectors. Numerous studies have considered the precision with which binary parameters (masses, spins, Love numbers) can be measured. Here I…

广义相对论与量子宇宙学 · 物理学 2014-03-19 Marc Favata