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Extending previous work by a number of authors, we have recently presented a new approach in which the detection of gravitational waves from merging neutron star binaries can be used to determine the equation of state of matter at nuclear…

广义相对论与量子宇宙学 · 物理学 2015-03-09 Kentaro Takami , Luciano Rezzolla , Luca Baiotti

Gravitational wave astronomy has established its role in measuring the equation of state governing cold supranuclear matter. To date and in the near future, gravitational wave measurements from neutron star binaries are likely to be…

广义相对论与量子宇宙学 · 物理学 2019-09-04 Ka Wa Tsang , Tim Dietrich , Chris Van Den Broeck

A number of works have shown that important information on the equation of state of matter at nuclear density can be extracted from the gravitational waves emitted by merging neutron-star binaries. We present a comprehensive analysis of the…

广义相对论与量子宇宙学 · 物理学 2016-06-29 Luciano Rezzolla , Kentaro Takami

We present a new analytic model describing gravitational wave emission in the post-merger phase of binary neutron star mergers. The model is described by a number of physical parameters that are related to various oscillation modes,…

高能天体物理现象 · 物理学 2022-03-09 Theodoros Soultanis , Andreas Bauswein , Nikolaos Stergioulas

Determining the equation of state of matter at nuclear density and hence the structure of neutron stars has been a riddle for decades. We show how the imminent detection of gravitational waves from merging neutron star binaries can be used…

广义相对论与量子宇宙学 · 物理学 2014-09-05 Kentaro Takami , Luciano Rezzolla , Luca Baiotti

We present an effective, low-dimensionality frequency-domain template for the gravitational wave signal from the stellar remnants from binary neutron star coalescence. A principal component decomposition of a suite of numerical simulations…

高能天体物理现象 · 物理学 2016-04-13 James Alexander Clark , Andreas Bauswein , Nikolaos Stergioulas , Deirdre Shoemaker

In this work we analyze the gravitational wave signal from hypermassive neutron stars formed after the merger of binary neutron star systems, focusing on its spectral features. The gravitational wave signals are extracted from numerical…

广义相对论与量子宇宙学 · 物理学 2017-10-16 Francesco Maione , Roberto De Pietri , Alessandra Feo , Frank Löffler

The gravitational wave signal emitted during the coalescence of two neutron stars carries information about the stars' internal structure. During the long inspiral phase the main matter observable is the tidal interaction between the binary…

广义相对论与量子宇宙学 · 物理学 2022-05-13 Marcella Wijngaarden , Katerina Chatziioannou , Andreas Bauswein , James A. Clark , Neil J. Cornish

The first detection of gravitational waves from a binary neutron star merger (GW170817) and the accompanying electromagnetic emission has impressively advanced our understanding of the merger process and has set some first constraints on…

广义相对论与量子宇宙学 · 物理学 2020-02-05 Andreas Bauswein , Nikolaos Stergioulas

We demonstrate Bayesian analyses of the complete gravitational-wave spectrum of binary neutron star mergers events with the next-generation detector Einstein Telescope. Our mock analyses are performed for 20 different signals using the…

广义相对论与量子宇宙学 · 物理学 2026-02-12 Giulia Huez , Sebastiano Bernuzzi , Matteo Breschi , Rossella Gamba

We demonstrate by a large set of merger simulations for symmetric binary neutron stars (NSs) that there is a tight correlation between the frequency peak of the postmerger gravitational-wave (GW) emission and the physical properties of the…

太阳与恒星天体物理 · 物理学 2015-05-28 A. Bauswein , H. -Th. Janka

The post-merger gravitational wave (GW) emission from a binary neutron star merger is expected to provide exciting new constraints on the dense-matter equation of state (EoS). Such constraints rely, by and large, on the existence of…

高能天体物理现象 · 物理学 2022-07-20 Carolyn A. Raithel , Elias R. Most

The recent detection of a neutron star binary through gravitational waves, GW170817, has offered another source of information about the properties of cold supranuclear matter. Information from the signal emitted before the neutron stars…

广义相对论与量子宇宙学 · 物理学 2019-02-20 Andoni Torres-Rivas , Katerina Chatziioannou , Andreas Bauswein , James Alexander Clark

In this article, I introduce ideas and techniques to extract information about the equation of state of matter at very high densities from gravitational waves emitted before, during and after the merger of binary neutron stars. I also…

高能天体物理现象 · 物理学 2019-09-30 Luca Baiotti

Gravitational waves have been detected from the inspiral of a binary neutron-star, GW170817, which allowed constraints to be placed on the neutron star equation of state. The equation of state can be further constrained if gravitational…

广义相对论与量子宇宙学 · 物理学 2019-08-14 Paul J. Easter , Paul D. Lasky , Andrew R. Casey , Luciano Rezzolla , Kentaro Takami

We analyze the gravitational wave (GW) emission from our recently published set of relativistic neutron star (NS) merger simulations and determine characteristic signal features that allow one to link GW measurements to the properties of…

天体物理学 · 物理学 2008-11-26 R. Oechslin , H. -T. Janka

We present a robust method to characterize the gravitational wave emission from the remnant of a neutron star coalescence. Our approach makes only minimal assumptions about the morphology of the signal and provides a full posterior…

广义相对论与量子宇宙学 · 物理学 2018-01-03 Katerina Chatziioannou , James Alexander Clark , Andreas Bauswein , Margaret Millhouse , Tyson B. Littenberg , Neil Cornish

Gravitational waves emitted during the coalescence of binary neutron star systems carry information about the equation of state describing the extremely dense matter inside neutron stars. In particular, the equation of state determines the…

With the first detection of gravitational waves from a binary system of neutron stars, GW170817, a new window was opened to study the properties of matter at and above nuclear-saturation density. Reaching densities a few times that of…

广义相对论与量子宇宙学 · 物理学 2020-05-01 Lukas R. Weih , Matthias Hanauske , Luciano Rezzolla

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
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