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Related papers: Mixing by Non-linear Gravity Wave Breaking on a Wh…

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With the observation of gravitational waves from merging compact binary systems, a new observing window of the universe has been opened. Most of the gravitational wave events currently detected are due to the merger of binary black hole…

High Energy Astrophysical Phenomena · Physics 2023-10-03 Giacomo Bruno , Gwenhaël De Wasseige , Romain Gorski , Mathieu Lamoureux , Matthias Vereecken

White dwarfs experience a thermal renaissance when they receive mass from a stellar companion in a binary. For accretion rates < 10^-8 Msun/yr, the freshly accumulated hydrogen/helium envelope ignites in a thermally unstable manner that…

Astrophysics · Physics 2009-11-07 Dean M. Townsley , Lars Bildsten

We study the nonlinear dynamics of binary black hole systems with scalar charge by numerically evolving the full equations of motion for shift-symmetric Einstein scalar Gauss-Bonnet gravity. We consider quasi-circular binaries with…

General Relativity and Quantum Cosmology · Physics 2023-01-25 Maxence Corman , Justin L. Ripley , William E. East

Observations of a merging neutron star binary in both gravitational waves, by the Laser Interferometer Gravitational-wave Observatory (LIGO), and across the spectrum of electromagnetic radiation, by myriad telescopes, have been used to show…

General Relativity and Quantum Cosmology · Physics 2022-07-13 Craig Copi , Glenn D. Starkman

We present the results of a study of propagating warp or bending waves in accretion discs. Three dimensional hydrodynamic simulations were performed using SPH, and the results of these are compared with calculations based on the linear…

Astrophysics · Physics 2009-10-31 Richard P. Nelson , John C. B. Papaloizou

Compression of the stellar winds from rapidly rotating hot stars is described by the wind compression model. However, it was also shown that rapid rotation leads to rotational distortion of the stellar surface, resulting in the appearance…

Solar and Stellar Astrophysics · Physics 2014-10-22 Zuzana Cariková , Augustin Skopal

We systematically investigate the mergers of neutron star-white dwarf binaries from beginning to end, with focus on the properties of the inflows and outflows in accretion disks and their electromagnetic emissions. Using population…

High Energy Astrophysical Phenomena · Physics 2022-09-28 Mark Alexander Kaltenborn , Chris L. Fryer , Ryan T. Wollaeger , Krzysztof Belczynski , Wesley Even , Chryssa Kouveliotou

The cosmological evolution of the binary black hole (BH) merger rate and the energy density of the gravitational-wave (GW) background are investigated. To evaluate the redshift dependence of the BH formation rate, BHs are assumed to…

High Energy Astrophysical Phenomena · Physics 2016-11-30 Ken'ichiro Nakazato , Yuu Niino , Norichika Sago

Cataclysmic Variables (CVs) and Symbiotic Binaries are close (or not so close) binary star systems which contain both a white dwarf (WD) primary and a larger cooler secondary star that typically fills its Roche Lobe. The cooler star is…

Solar and Stellar Astrophysics · Physics 2020-06-03 S. Starrfield , M. Bose , C. Iliadis , W. R. Hix , C. E. Woodward , R. M. Wagner

We investigate strongly nonlinear stationary gravity waves which experience refraction due to a thin vertical shear layer of horizontal background wind. The velocity amplitude of the waves is of the same order of magnitude as the background…

Fluid Dynamics · Physics 2023-09-14 Mark Schlutow , Georg S. Völker

Black hole-neutron star binary mergers display a much richer phenomenology than black hole-black hole mergers, even in the relatively simple case - considered in this paper - in which both the black hole and the neutron star are…

General Relativity and Quantum Cosmology · Physics 2015-06-16 Francesco Pannarale , Emanuele Berti , Koutarou Kyutoku , Masaru Shibata

There has been a growing interest within the astrophysics community in highly magnetized and fast-spinning white dwarfs (WDs), commonly referred to as HMWDs. WDs with these characteristics are quite uncommon and possess magnetic fields…

Solar and Stellar Astrophysics · Physics 2024-12-20 M. F. Sousa , E. Otoniel , J. G. Coelho , J. C. N. de Araujo

We apply common gravitational wave inference procedures on binary black hole merger waveforms beyond general relativity. We consider dynamical Chern-Simons gravity, a modified theory of gravity with origins in string theory and loop quantum…

General Relativity and Quantum Cosmology · Physics 2023-02-02 Maria Okounkova , Maximiliano Isi , Katerina Chatziioannou , Will M. Farr

Intermediate-mass main sequence stars have large radiative envelopes overlying convective cores. This configuration allows internal gravity waves (IGWs) generated at the convective-radiative interface to propagate towards the stellar…

Solar and Stellar Astrophysics · Physics 2020-08-12 R. P. Ratnasingam , P. V. F. Edelmann , T. M. Rogers

The impact forces generated by the impact of a breaking wave are poorly understood. These impulsive hydrodynamic loads to a ship's hull are of short duration relative to ship motions and buoyant wave loads and often result in extremely high…

We present results from numerical simulations of the interaction of internal gravity waves (IGW) with magnetic fields in the radiative interior of the Sun. In this second paper, the waves are forced self-consistently by an overlying…

Solar and Stellar Astrophysics · Physics 2015-05-20 T. M. Rogers , K. B. MacGregor

Jets can become collimated as they propagate through dense environments and understanding such interactions is crucial for linking physical models of the environments to observations. In this work, we use 3D special-relativistic simulations…

High Energy Astrophysical Phenomena · Physics 2021-10-27 Lorenzo Nativi , Gavin P. Lamb , Stephan Rosswog , Christoffer Lundman , Grzegorz Kowal

This work is an analytical investigation of the evolution of surface water waves in Miles and Jeffreys theories of wind wave interaction in water of finite depth. The present review is divided into two major parts. The first corresponds to…

Pattern Formation and Solitons · Physics 2024-08-07 A. Latifi , M. A. Manna , R. A. Kraenkel

We discuss gravitational waves from merging binaries using a Newtonian approach with some inputs from the Post-Newtonian formalism. We show that it is possible to understand the key features of the signal using fundamental physics and also…

Popular Physics · Physics 2019-12-20 Jahanvi , Ashish Kumar Meena , J. S. Bagla

Although the general theory of relativity (GR) predicts that gravitational waves (GWs) have exactly the same propagation velocity as electromagnetic (EM) waves, many theories of gravity beyond GR expect otherwise. Accurate measurement of…

General Relativity and Quantum Cosmology · Physics 2024-08-06 Tian-Yong Cao , Ankit Kumar , Shu-Xu Yi
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