Zobrazeno 1 - 10
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pro vyhledávání: '"Newman, Ezra T."'
Autor:
Newman, Ezra T.
We point out an unusual relationship among a variety of null geodesic congruences; (a) the generators of ordinary light-cones and (b) certain (related) shear-free but twisting congruences in Minkowski Space-time as well as (c) asymptotically shear-fr
Externí odkaz:
http://arxiv.org/abs/1704.04971
Autor:
Newman, Ezra T.
Since the late1950s, almost all discussions of Asymptotically Flat (Einstein-Maxwell) Space-Times have taken place in the context of Penrose's Null Infinity, $\mathcal{I}^{+}.$\ $\ $In addition,\ almost all calculations have used the Bondi coordinate
Externí odkaz:
http://arxiv.org/abs/1701.08406
Autor:
Newman, Ezra T.
We begin by emphasizing that we are dealing with standard Einstein or Einstein-Maxwell theory - absolutely no new physics has been inserted. The fresh item is that the well-known asymptotically flat solutions of the Einstein-Maxwell theory are transf
Externí odkaz:
http://arxiv.org/abs/1602.07218
Autor:
Newman, Ezra T.
Considering the spin-coefficient version of the left-flat vacuum Einstein equations, all but one of the fifty equations can be explicitly integrated via the introduction of five spin-weight s=-2 complex potentials. The final equation is a non-linear
Externí odkaz:
http://arxiv.org/abs/1303.1807
Autor:
Newman, Ezra T.
Considering perturbations off the Reissner-Nordstrom metric while keeping the perturbations in the class of type II Einstein-Maxwell metrics, we do a spherical harmonic expansion of all the variables up to the quadrupole term. This leads to a rather
Externí odkaz:
http://arxiv.org/abs/1109.4106
Autor:
Newman, Ezra T., Price, Richard H.
Publikováno v:
Phys.Rev.D82:083516,2010
The spin weighted spherical harmonic (SWSH) description of angular functions typically is associated with the Newman-Penrose (NP) null tetrad formalism. Recently the SWSH description, but not the NP formalism, has been used in the study of the polari
Externí odkaz:
http://arxiv.org/abs/1007.4351
Autor:
Adamo, Tim, Newman, Ezra T
Publikováno v:
Class.Quant.Grav.25:245005,2008
We begin with the time-dependent electric and magnetic dipole solution of Maxwell's equations in Minkowski space. This Maxwell field is then used to determine the behavior of the gravitational field (the Weyl tensor) as a second-order perturbation of
Externí odkaz:
http://arxiv.org/abs/0807.3537
We argue that the well-known problem of the instabilities associated with the self-forces (radiation reaction forces) in classical electrodynamics are possibly stabilized by the introduction of gravitational forces via general relativity.
Externí odkaz:
http://arxiv.org/abs/0803.3921
Autor:
Kozameh, Carlos, Newman, Ezra T.
Publikováno v:
Class.Quant.Grav.24:3085-3090,2007
We show that, though they are rare, there are asymptotically flat space-times that possess null geodesic congruences that are both asymptotically shear- free and twist-free (surface forming). In particular, we display the class of space-times that po
Externí odkaz:
http://arxiv.org/abs/gr-qc/0703108
Autor:
Newman, Ezra T.
Publikováno v:
Class.Quant.Grav. 23 (2006) 3385-3392
We first review asymptotic twistor theory with its real subspace of null asymptotic twistors. This is followed by a description of an asymptotic version of the Kerr theorem that produces regular asymptotically shear free null geodesic congruences in
Externí odkaz:
http://arxiv.org/abs/gr-qc/0512079