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The role of the crust on the tidal deformability of a cold nonaccreted neutron star is studied using the recent unified equation of state BSk24. This equation of state, which is based on the nuclear-energy density functional theory,…

High Energy Astrophysical Phenomena · Physics 2020-01-31 Loïc Perot , Nicolas Chamel , Aurélien Sourie

With the recent measurement of GW170817 providing constraints on the tidal deformability of a neutron star, it is very important to understand what features of the equation of state have the biggest effect on it. We therefore study the…

High Energy Astrophysical Phenomena · Physics 2020-02-06 A. M. Kalaitzis , T. F. Motta , A. W. Thomas

{\it Background.} We investigate possible correlations between neutron star observables and properties of atomic nuclei. Particularly, we explore how the tidal deformability of a 1.4 solar mass neutron star, $M_{1.4}$, and the neutron skin…

Nuclear Theory · Physics 2021-02-17 G. F. Burgio , I. Vidana

The constraints on tidal deformability $\Lambda$ of neutron stars are first extracted from GW170817 by LIGO and Virgo Collaborations but the relation between radius $R$ and tidal deformability $\Lambda$ is still nuder debate. Using an…

Nuclear Theory · Physics 2020-08-26 Nai-Bo Zhang , Bin Qi , Shou-Yu Wang

We use a Bayesian inference analysis to explore the sensitivity of Taylor expansion parameters of the nuclear equation of state (EOS) to the neutron star dimensionless tidal deformability ($\Lambda$) on 1 to 2 solar masses neutron stars. A…

Nuclear Theory · Physics 2020-10-28 C. Y. Tsang , M. B. Tsang , Pawel Danielewicz , W. G. Lynch , F. J. Fattoyev

The equation of state of the neutron-star outer crust is sensitive to nuclear mass predictions and provides a direct connection to properties of nuclei throughout the nuclide map, including those beyond experimental reach. We quantify the…

Nuclear Theory · Physics 2026-05-12 P. S. Koliogiannis , N. Paar

Because all neutron stars share a common equation of state, tidal deformability constraints from the compact binary coalescence GW170817 have implications for the properties of neutron stars in other systems. Using equation-of-state…

General Relativity and Quantum Cosmology · Physics 2019-07-03 Bharat Kumar , Philippe Landry

Measurements of neutron-star macrophysical properties thanks to multimessenger observations offer the possibility to constrain the properties of nuclear matter. Indeed cold and dense matter as found inside neutron stars, in particular in…

High Energy Astrophysical Phenomena · Physics 2021-07-09 Lami Suleiman , Morgane Fortin , Julian Leszek Zdunik , Pawel Haensel

We investigate the constraints on the mass and radius of neutron stars by considering the tidal deformability in the merge of neutron star binaries. In order to extract the most reliable range of uncertainty from theory, we employ models…

Nuclear Theory · Physics 2019-01-02 Young-Min Kim , Yeunhwan Lim , Kyujin Kwak , Chang Ho Hyun , Chang-Hwan Lee

We study the impact of crust-core connection procedures on various neutron-star properties, especially on the tidal deformability. We consider three types of connection procedures to treat the discontinuity in a nonunified equation of state…

High Energy Astrophysical Phenomena · Physics 2026-02-18 Junbo Pang , Hong Shen , Jinniu Hu

We present results for the tidal deformability in neutron stars, the tidal Love number $k_2$, and the effective deformability of a binary system. The microscopic equation of state for cold $\beta$-stable neutron matter is based upon…

Nuclear Theory · Physics 2026-05-25 Francesca Sammarruca , Prabin Thapa

We derive an equation of state for magnetized charge neutral nuclear matter relevant for neutron star structure. The calculations are performed within an effective chiral model based on generalization of sigma model with nonlinear self…

Nuclear Theory · Physics 2018-11-16 Tuhin Malik , Debashree Sen , T. K. Jha , Hiranmaya Mishra

In the late inspiral phase, gravitational waves from binary neutron star mergers carry the imprint of the equation of state due to the tidally deformed structure of the components. If the stars contain solid crusts, then their shear modulus…

General Relativity and Quantum Cosmology · Physics 2019-09-02 Bhaskar Biswas , Rana Nandi , Prasanta Char , Sukanta Bose

Gravitational wave measurements of binary neutron star coalescences offer information about the properties of the extreme matter that comprises the stars. Despite our expectation that all neutron stars in the Universe obey the same equation…

General Relativity and Quantum Cosmology · Physics 2018-05-30 Katerina Chatziioannou , Carl-Johan Haster , Aaron Zimmerman

Universal relations (i.e., insensitive to the equation of state) between macroscopic properties of neutron stars have proven useful for a variety of applications -- from providing a direct means to extract observables from data to breaking…

General Relativity and Quantum Cosmology · Physics 2022-08-30 Jayana A. Saes , Raissa F. P. Mendes

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

We study the effects of high magnetic fields on the structure and on the geometry of the crust in neutron stars. We find that the crust geometry is substantially modified by the magnetic field inside the star. We build stationary and…

High Energy Astrophysical Phenomena · Physics 2017-12-18 B. Franzon , R. Negreiros , S. Schramm

We present predictions for neutron star tidal deformabilities obtained from a Bayesian analysis of the nuclear equation of state, assuming a minimal model at high-density that neglects the possibility of phase transitions. The Bayesian…

Nuclear Theory · Physics 2019-12-17 Y. Lim , J. W. Holt

Finite size effects in a neutron star merger are manifested, at leading order, through the tidal deformabilities (Lambdas) of the stars. If strong first-order phase transitions do not exist within neutron stars, both neutron stars are…

High Energy Astrophysical Phenomena · Physics 2018-10-24 Tianqi Zhao , James M. Lattimer

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…

Nuclear Theory · Physics 2019-06-05 Plamen G. Krastev , Bao-An Li
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