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The stochastic background of gravitational wave signals arising from the core-collapse supernovae is produced through various complex mechanisms that need detailed and careful investigation. We proposed a simplified multi-peak waveform of…

General Relativity and Quantum Cosmology · Physics 2024-09-27 Sourav Roy Chowdhury , Maxim Khlopov

This paper presents an estimate for the spectral properties of the stochastic background of gravitational waves emitted by a population of hot, young, rapidly rotating neutron stars throughout the Universe undergoing $f$-mode instabilities,…

Cosmology and Nongalactic Astrophysics · Physics 2016-02-03 Marco Surace , Kostas D. Kokkotas , Pantelis Pnigouras

(Abridged.) The mean-square current quadrupole moment associated with vorticity fluctuations in high-Reynolds-number turbulence in a differentially rotating neutron star is calculated analytically, as are the amplitude and decoherence time…

High Energy Astrophysical Phenomena · Physics 2014-11-20 A. Melatos , C. Peralta

We estimate the spectral properties of the stochastic background of gravitational radiation emitted by a cosmological population of hot, young, rapidly rotating neutron stars. Their formation rate as a function of redshift is deduced from…

Astrophysics · Physics 2009-10-30 Valeria Ferrari , Sabino Matarrese , Raffaella Schneider

Stochastic gravitational wave background produced by a stationary coalescing population of binary neutron stars in the Galaxy is calculated. This background is found to constitute a confusion limit within the LISA frequency band up to a…

Astrophysics · Physics 2009-11-06 V. B. Ignatiev , A. G. Kuranov , K. A. Postnov , M. E. Prokhorov

We estimate the stochastic gravitational-wave background arising from all stellar core-collapse events in the universe based on the gravitational-wave signal predictions of recent numerical simulations. We focus on waveforms from slowly or…

General Relativity and Quantum Cosmology · Physics 2022-03-30 Bella Finkel , Haakon Andresen , Vuk Mandic

High-Reynolds-number turbulence driven by stellar convection in main-sequence stars generates stochastic gravitational radiation. We calculate the wave-strain power spectral density as a function of the zero-age main-sequence mass for an…

Solar and Stellar Astrophysics · Physics 2015-06-22 M. F. Bennett , A. Melatos

We analyse the stochastic background of gravitational radiation emitted by a cosmological population of core-collapse supernovae. The supernova rate as a function of redshift is deduced from an observation-based determination of the star…

Astrophysics · Physics 2009-10-30 Valeria Ferrari , Sabino Matarrese , Raffaella Schneider

The background of gravitational waves produced by the ensemble of rotating neutron stars (which includes pulsars, magnetars and gravitars) is investigated. A formula for \Omega(f) (commonly used to quantify the background) is derived,…

General Relativity and Quantum Cosmology · Physics 2012-11-07 Pablo A. Rosado

The gravitational wave radiation emitted by all, resolved and unresolved, astrophysical sources in the observable universe generates a stochastic background. This background has a directional dependence inherited from the inhomogeneities of…

Cosmology and Nongalactic Astrophysics · Physics 2018-06-27 Giulia Cusin , Cyril Pitrou , Jean-Philippe Uzan

Magnetars have already been a potential candidate as gravitational wave sources that could be detected by current and future terrestrial as well as ground based gravitational wave detectors. In this article, we focus on the gravitational…

General Relativity and Quantum Cosmology · Physics 2021-11-22 Sourav Roy Chowdhury , Maxim Khlopov

A stochastic background of gravitational waves is expected to arise from a superposition of a large number of unresolved gravitational-wave sources of astrophysical and cosmological origin. It is expected to carry unique signatures from the…

Cosmology and Nongalactic Astrophysics · Physics 2012-08-27 The LIGO Scientific Collaboration , the Virgo Collaboration

Gravitational radiation drives an instability in the r-modes of young rapidly rotating neutron stars. This instability is expected to carry away most of the angular momentum of the star by gravitational radiation emission, leaving a star…

General Relativity and Quantum Cosmology · Physics 2009-10-31 Benjamin J. Owen , Lee Lindblom , Curt Cutler , Bernard F. Schutz , Alberto Vecchio , Nils Andersson

Detecting a stochastic gravitational wave background requires that we first understand and model any astrophysical foregrounds. In the millihertz frequency band, the predominate foreground signal will be from unresolved white dwarf binaries…

General Relativity and Quantum Cosmology · Physics 2014-01-23 Matthew R. Adams , Neil J. Cornish

We study the generation of a stochastic gravitational wave (GW) background produced by a population of neutron stars (NSs) which go over a hadron-quark phase transition in its inner shells. We obtain, for example, that the NS phase…

General Relativity and Quantum Cosmology · Physics 2009-10-05 J. C. N. de Araujo , G. F. Marranghello

We revisit the possibility and detectability of a stochastic gravitational wave background (SGWB) produced by a cosmological population of newborn neutron stars (NSs) with r-mode instabilities. We show that the resultant SGWB is insensitive…

Cosmology and Nongalactic Astrophysics · Physics 2011-03-18 Xing-Jiang Zhu , Xi-Long Fan , Zong-Hong Zhu

In massive scalar-tensor gravity, core-collapse supernovae are strong sources of scalar-polarized gravitational waves. These can be detectable out to large distance. The dispersive nature of the propagation of waves in the massive scalar…

General Relativity and Quantum Cosmology · Physics 2023-07-10 Roxana Rosca-Mead , Michalis Agathos , Christopher J. Moore , Ulrich Sperhake

We study the generation of a stochastic gravitational wave (GW) background produced by a population of neutron stars (NSs) which go over a hadron-quark phase transition in its inner shells. We obtain, for example, that the NS phase…

General Relativity and Quantum Cosmology · Physics 2010-11-23 J. C. N. de Araujo , G. F. Marranghello

Stochastic gravitational waves (GW) associated with unresolved astrophysical sources at frequency bands of the ongoing GW interferometers LIGO/VIRGO and LISA are studied. We show that GW noise from rotating galactic neutron stars with low…

Astrophysics · Physics 2007-05-23 K. A. Postnov

Non radial oscillations of neutron stars are associated with the emission of gravitational waves. The characteristic frequencies of these oscillations can be computed using the theory of stellar perturbations, and they are shown to carry…

General Relativity and Quantum Cosmology · Physics 2011-05-10 Valeria Ferrari
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