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We use gravitational-wave observations of the binary neutron star merger GW170817 to explore the tidal deformabilities and radii of neutron stars. We perform Bayesian parameter estimation with the source location and distance informed by…

High Energy Astrophysical Phenomena · Physics 2018-11-01 Soumi De , Daniel Finstad , James M. Lattimer , Duncan A. Brown , Edo Berger , Christopher M. Biwer

Gravitational waves from the coalescence of two neutron stars were recently detected for the first time by the LIGO-Virgo collaboration, in event GW170817. This detection placed an upper limit on the effective tidal deformability of the two…

High Energy Astrophysical Phenomena · Physics 2018-05-02 Carolyn Raithel , Feryal Özel , Dimitrios Psaltis

We perform new longterm (15-16 orbits) simulations of coalescing binary neutron stars in numerical relativity using an updated Einstein's equation solver, employing low-eccentricity initial data, and modeling the neutron stars by a…

General Relativity and Quantum Cosmology · Physics 2015-04-01 Kenta Hotokezaka , Koutarou Kyutoku , Hirotada Okawa , Masaru Shibata

Gravitational waves from compact binary coalescences are valuable for testing theories of gravity in the strong field regime. By measuring neutron star tidal deformability using gravitational waves from binary neutron stars, stringent…

General Relativity and Quantum Cosmology · Physics 2024-08-21 Stephanie M. Brown

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

The early part of the gravitational wave signal of binary neutron star inspirals can potentially yield robust information on the nuclear equation of state. The influence of a star's internal structure on the waveform is characterized by a…

High Energy Astrophysical Phenomena · Physics 2011-02-28 Tanja Hinderer , Benjamin D. Lackey , Ryan N. Lang , Jocelyn S. Read

The agreement of the nuclear equation of state (EoS) deduced from the GW170817 based tidal deformability with the one obtained from empirical data on microscopic nuclei is examined. It is found that suitably chosen experimental data on…

Nuclear Theory · Physics 2019-05-29 Tuhin Malik , B. K. Agrawal , J. N. De , S. K. Samaddar , C. Providência , C. Mondal , T. K. Jha

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

The LIGO/Virgo detection of gravitational waves originating from a neutron-star merger, GW170817, has recently provided new stringent limits on the tidal deformabilities of the stars involved in the collision. Combining this measurement…

High Energy Astrophysical Phenomena · Physics 2018-05-02 Eemeli Annala , Tyler Gorda , Aleksi Kurkela , Aleksi Vuorinen

Constraints set on key parameters of the nuclear matter equation of state (EoS) by the values of the tidal deformability, inferred from GW170817, are examined by using a diverse set of relativistic and non-relativistic mean field models.…

Nuclear Theory · Physics 2018-10-03 Tuhin Malik , N. Alam , M. Fortin , C. Providência , B. K. Agrawal , T. K. Jha , Bharat Kumar , S. K. Patra

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…

Nuclear Theory · Physics 2017-01-11 Bharat Kumar , S. K. Biswal , S. K. Patra

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 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

Gravitational-wave observations of inspiralling binary neutron star systems can be used to measure the neutron-star equation of state (EOS) through the tidally induced shift in the waveform phase that depends on the tidal deformability…

General Relativity and Quantum Cosmology · Physics 2015-03-05 Benjamin D. Lackey , Leslie Wade

The tidal measurement of gravitational waves from the binary neutron star merger event GW170817 allows us to probe nuclear physics that suffers less from astrophysical systematics compared to neutron star radius measurements with…

General Relativity and Quantum Cosmology · Physics 2021-01-19 Zack Carson , Andrew W. Steiner , Kent Yagi

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

We confront observational data from gravitational wave event GW170817 with microscopic modeling of the cold neutron star equation of state. We develop and employ a Bayesian statistical framework that enables us to implement constraints on…

Nuclear Theory · Physics 2018-08-15 Yeunhwan Lim , Jeremy W. Holt

One of largest uncertainties in nuclear physics is the relation between the pressure and density of supranuclear matter: the equation of state. Some of this uncertainty may be removed through future gravitational wave observations of…

General Relativity and Quantum Cosmology · Physics 2018-10-16 Kent Yagi , Nicolas Yunes

Gravitational-wave observations in the near future may allow us to measure tidal deformabilities of neutron stars, which leads us to the understanding of physics at nuclear density. In principle, the gravitational waveform depends on…

General Relativity and Quantum Cosmology · Physics 2018-06-06 Kent Yagi

Extending our previous studies, we perform high-resolution simulations of inspiraling binary neutron stars in numerical relativity. We thoroughly carry through a convergence study in our currently available computational resources with the…

High Energy Astrophysical Phenomena · Physics 2017-11-01 Kenta Kiuchi , Kyohei Kawaguchi , Koutarou Kyutoku , Yuichiro Sekiguchi , Masaru Shibata , Keisuke Taniguchi
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