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KerrCFT and gravitational perturbations
, 2009
"... Motivated by the KerrCFT conjecture, we investigate perturbations of the nearhorizon extreme Kerr spacetime. The Teukolsky equation for a massless field of arbitrary spin is solved. Solutions fall into two classes: normal modes and traveling waves. Imposing suitable (outgoing) boundary conditions, ..."
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, we find that there are no unstable modes. The explicit form of metric perturbations is obtained using the Hertz potential formalism, and compared with the KerrCFT boundary conditions. The energy and angular momentum associated with scalar field and gravitational normal modes are calculated
Gravitational Perturbations of a Radiating Spacetime.
, 2008
"... This paper discusses the problem of gravitational perturbations of radiating spacetimes. We lay out the theoretical framework for describing the interaction of external gravitational fields with a radiating spacetime. This is done by deriving the field perturbation equations for a radiating metric. ..."
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This paper discusses the problem of gravitational perturbations of radiating spacetimes. We lay out the theoretical framework for describing the interaction of external gravitational fields with a radiating spacetime. This is done by deriving the field perturbation equations for a radiating metric
Non Gravitational Perturbations on Artificial Satellites
"... . In the present paper we give a brief, introductory view of the main nongravitational perturbations acting on an artificial satellite orbiting around the Earth, describing the basic physical mechanisms which produce the perturbative force and computing its order of magnitude. Particular prominence ..."
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. In the present paper we give a brief, introductory view of the main nongravitational perturbations acting on an artificial satellite orbiting around the Earth, describing the basic physical mechanisms which produce the perturbative force and computing its order of magnitude. Particular prominence
THE BACK REACTION OF GRAVITATIONAL PERTURBATIONS a
, 1997
"... The back reaction of gravitational perturbations in a homogeneous background is determined by an effective energymomentum tensor quadratic in the perturbations. We show that this nonlinear feedback effect is important in the case of long wavelength scalar perturbations in inflationary universe mode ..."
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The back reaction of gravitational perturbations in a homogeneous background is determined by an effective energymomentum tensor quadratic in the perturbations. We show that this nonlinear feedback effect is important in the case of long wavelength scalar perturbations in inflationary universe
NonGravitational Perturbations On Gps Satellites
"... Solar radiation pressure is the most important nongravitational force acting on GPS satellites (Rizos and Stolz, 1985) and therefore its effect has to be modelled with a sufficient accuracy in orbital analysis and prediction. The goal of the present work is to analyze the models currently adopted f ..."
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Solar radiation pressure is the most important nongravitational force acting on GPS satellites (Rizos and Stolz, 1985) and therefore its effect has to be modelled with a sufficient accuracy in orbital analysis and prediction. The goal of the present work is to analyze the models currently adopted
Gravitational Perturbations of Higher Dimensional Rotating Black Holes: Tensor Perturbations,” Phys
 Rev
, 2007
"... Assessing the stability of higherdimensional rotating black holes requires a study of linearized gravitational perturbations around such backgrounds. We study perturbations of MyersPerry black holes with equal angular momenta in an odd number of dimensions (greater than five), allowing for a cosmo ..."
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Cited by 39 (3 self)
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Assessing the stability of higherdimensional rotating black holes requires a study of linearized gravitational perturbations around such backgrounds. We study perturbations of MyersPerry black holes with equal angular momenta in an odd number of dimensions (greater than five), allowing for a
The Back Reaction of Gravitational Perturbations and Applications in Cosmology
"... We study the back reaction of cosmological perturbations on the evolution of the universe. The object usually employed to describe the back reaction of perturbations is called the effective energymomentum tensor (EEMT) of cosmological perturbations. In this formulation, the problem of the gauge depe ..."
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Cited by 1 (0 self)
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frequency perturbations is gauge invariant which greatly simplifies the pioneering approach by Isaacson[1]. As applications we analyze the back reaction of gravitational waves and scalar metric fluctuations in FriedmannRobertsonWalker background spacetimes. We investigate in particular back reaction effects during
Late time decay of scalar, electromagnetic, and gravitational perturbations
, 1999
"... outside rotating black holes ..."
Linear stability of the Schwarzschild black hole under electromagnetic and gravitational perturbations
, 2006
"... We prove that the Schwarzschild black hole is linearly stable under electromagnetic and gravitational perturbations. Our method is to show that for spin s = 1 or s = 2, solutions of the Teukolsky equation with smooth, compactly supported initial data outside the event horizon, decay in L ∞ loc. 1 ..."
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Cited by 4 (1 self)
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We prove that the Schwarzschild black hole is linearly stable under electromagnetic and gravitational perturbations. Our method is to show that for spin s = 1 or s = 2, solutions of the Teukolsky equation with smooth, compactly supported initial data outside the event horizon, decay in L ∞ loc. 1
Results 1  10
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2,265