title: Parametric excitation of Alfven waves by gravitational radiation
abstract: We consider the parametric excitation of Alfven waves by gravitational radiation propagating on a Minkowski background, parallel to an external magnetic field. As a starting point, standard ideal magnetohydrodynamics equations incorporating the curvature of space-time has been derived. The growth rate of the Alfven waves has been calculated, using the normal-mode approach. Various astrophysical applications of our investigations are discussed, and finally we demonstrate that the coupling coefficients of the interacting modes fulfill the Manley-Rowe relations.
authors.affiliation: Department of Plasma Physics, Umea University, SE-901 87 Umea, Sweden.
authors.initials: M
authors.lastname: Servin
authors.initials: G
authors.lastname: Brodin
authors.initials: M
authors.lastname: Bradley
authors.initials: M
authors.lastname: Marklund