358 citations · 3.7k across the 79 of their papers we have counts for
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Newtonian nonlinear hydrodynamics and magnetohydrodynamics
N. K. Spyrou, C. G. Tsagas
We use covariant methods to analyse the nonlinear evolution of self-gravitating, non-relativistic media. The formalism is first applied to imperfect fluids, aiming at the kinematic…
Slow decay of magnetic fields in open Friedmann universes
John D. Barrow, Christos G. Tsagas
We describe how magnetic fields in Friedmann universes can experience superadiabatic growth without departing from conventional electromagnetism. The reason is the relativistic cou…
Generalized Ohm's law for relativistic plasmas
Alejandra Kandus, Christos G. Tsagas
We generalise the relativistic expression of Ohm's law by studying a multi-fluid system of charged species using the 1+3 covariant formulation of general relativistic electrodynami…
Relativistic cosmology and large-scale structure
Christos G. Tsagas, Anthony Challinor, Roy Maartens
General relativity marked the beginning of modern cosmology and it has since been at the centre of many of the key developments in this field. In the present review, we discuss the…
Cosmology with inhomogeneous magnetic fields
J. D. Barrow, R. Maartens, C. G. Tsagas
We review spacetime dynamics in the presence of large-scale electromagnetic fields and then consider the effects of the magnetic component on perturbations to a spatially homogeneo…
Resonant amplification of magnetic seed fields by gravitational waves in the early universe
Christos G. Tsagas
Inflation is known to produce both gravitational waves and seed magnetic fields on scales well beyond the size of the horizon. The general relativistic interaction between these tw…