Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Werner, Marcus C."'
The Penrose plane wave limit is a remarkable property of Lorentzian spacetimes. Here, we discuss its extension to Finsler spacetimes by introducing suitable lightlike coordinates and adapting the Lorentzian definition of pp-waves. New examples of suc
Externí odkaz:
http://arxiv.org/abs/2205.01162
Autor:
Werner, Marcus C.
We consider light propagation as a probe of non-metricity in area metric spacetimes, and find a deviation from the standard Etherington relation for linearized area metric Schwarzschild. This is joint work with Frederic P. Schuller (Erlangen Universi
Externí odkaz:
http://arxiv.org/abs/1904.11216
Autor:
Werner, Marcus C.
This article presents hitherto unpublished correspondence of Struble in 1947 with Menger, Chandrasekhar, and eventually Einstein, about a possible observational test supporting Einstein's special relativity against Ritz's emission theory using binary
Externí odkaz:
http://arxiv.org/abs/1904.11206
In this paper we return to the subject of Jacobi metrics for timelike and null geodsics in stationary spactimes, correcting some previous misconceptions. We show that not only null geodesics, but also timelike geodesics are governed by a Jacobi-Maupe
Externí odkaz:
http://arxiv.org/abs/1903.11805
Autor:
Gibbons, Gary W., Werner, Marcus C.
Electromagnetism in spacetime can be treated in terms of an analogue linear dielectric medium. In this paper, we discuss the gravitational analogue of the linear magnetoelectric effect, which can be found in multiferroic materials. While this is know
Externí odkaz:
http://arxiv.org/abs/1903.00223
Autor:
Roesch, Henri P., Werner, Marcus C.
In general relativity, spatial light rays of static spherically symmetric spacetimes are geodesics of surfaces in Riemannian optical geometry. In this paper, we apply results on the isoperimetric problem to show that length-minimizing curves subject
Externí odkaz:
http://arxiv.org/abs/1902.01927
We consider light propagation in a spacetime whose kinematics allow weak birefringence, and whose dynamics have recently been derived by gravitational closure. Revisiting the definitions of luminosity and angular diameter distances in this setting, w
Externí odkaz:
http://arxiv.org/abs/1707.01261
Publikováno v:
Phys. Rev. D 95, 104012 (2017)
We investigate the deflection of light by a rotating global monopole spacetime and a rotating Letelier spacetime in the weak deflection approximation. To this end, we apply the Gauss-Bonnet theorem to the corresponding osculating optical geometries a
Externí odkaz:
http://arxiv.org/abs/1702.05600
The Etherington distance duality relation, which relates the luminosity distance, the angular diameter distance and the redshift of objects, depends only upon a conservation law for light that traces back directly to the Lorentzian spacetime geometry
Externí odkaz:
http://arxiv.org/abs/1612.08784
Autor:
Werner, Marcus C.
The standard definition of gravitational lensing magnification is generalized to Lorentzian spacetimes, and it is shown how it can be interpreted geometrically in terms of the van Vleck determinant and the exponential map. This is joint work with Ami
Externí odkaz:
http://arxiv.org/abs/1507.05099