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Quasi-Normal Modes of Stars and Black Holes
AbstractPerturbations of stars and black holes have been one of the main topics of relativistic astrophysics for the last few decades. They are of particular importance today, because of theirExpand
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The Einstein Telescope: a third-generation gravitational wave observatory
Advanced gravitational wave interferometers, currently under realization, will soon permit the detection of gravitational waves from astronomical sources. To open the era of precision gravitationalExpand
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Introducing the CTA concept
The Cherenkov Telescope Array (CTA) is a new observatory for very high-energy (VHE) gamma rays. CTA has ambitions science goals, for which it is necessary to achieve full-sky coverage, to improve theExpand
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Einstein gravitational wave Telescope conceptual design study
This document describes the Conceptual Design of a third generation gravitational wave observatory named Einstein Telescope (“ET”). The design of this new research infrastructure has been realisedExpand
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Towards gravitational wave asteroseismology
We present new results for pulsating neutron stars. We have calculated the eigenfrequencies of the modes that one would expect to be the most important gravitational wave sources: the fundamentalExpand
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In this review we summarize the current understanding of the gravitational-wave driven instability associated with the so-called r-modes in rotating neutron stars. We discuss the nature of theExpand
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On the quasi‐periodic oscillations in magnetars
We study torsional Alfven oscillations of magnetars, i.e., neutron stars with a strong magnetic field. We consider the poloidal and toroidal components of the magnetic field and a wide range ofExpand
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Bayesian timing analysis of giant flare of SGR 180620 by RXTE PCA
Aims. By detecting high-frequency quasi-periodic oscillations (QPOs) and estimating their frequencies during the decaying tail of giant flares from soft gamma-ray repeaters (SGRs) useful constraintsExpand
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Gravitational Radiation Limit on the Spin of Young Neutron Stars
A newly discovered instability in rotating neutron stars, driven by gravitational radiation reaction acting on the stars' r-modes, is shown here to set an upper limit on the spin rate of youngExpand
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Gravitational waves from pulsating stars: Evolving the perturbation equations for a relativistic star
We consider the perturbations of a relativistic star as an initial-value problem. Having discussed the formulation of the problem ~the perturbation equations and the appropriate boundary conditionsExpand
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