74 citations · 690 across the 38 of their papers we have counts for
26 papers · 1 filter
Cosmologies with a magnetic field, dust, and Lambda
Martin Zofka, Kjell Rosquist
We investigate exact solutions of the Einstein-Maxwell equations with the cosmological constant where the source of the gravitational field consists of a magnetic field and dust. I…
Interacting Kerr-Newman Electromagnetic Fields
Sajad Aghapour, Lars Andersson, Kjell Rosquist +1
In this paper, we study some of the properties of the limit of the Kerr-Newman solution of Einstein-Maxwell equations. Noting Carter's observation of the near equality be…
Observational backreaction in discrete black holes lattice cosmological models
Daniele Gregoris, Kjell Rosquist
Applying the Sachs formalism, the optical properties encoded in the distance modulus are studied along curves exhibiting local rotational symmetry for some closed inhomogeneous cos…
Twisted Gravitational Waves of Petrov Type D
Kjell Rosquist, Donato Bini, Bahram Mashhoon
Twisted gravitational waves (TGWs) are nonplanar unidirectional Ricci-flat solutions of general relativity. Thus far only TGWs of Petrov type \emph{II} are implicitly known that de…
Spinning Particles in Twisted Gravitational Wave Spacetimes
Donato Bini, Carmen Chicone, Bahram Mashhoon +1
Twisted gravitational waves (TGWs) are nonplanar waves with twisted rays that move along a fixed direction in space. We study further the physical characteristics of a recent class…
Analytic Analysis of Irregular Discrete Universes
Shan W. Jolin, Kjell Rosquist
In this work we investigate the dynamics of cosmological models with spherical topology containing up to 600 Schwarzschild black holes arranged in an irregular manner. We solve the…