Séminaire / Seminar GReCO |
| « Some examples of the interaction between gravitational waves and magnetic fields in astrophysics and cosmology » |
|
P. Dunsby |
| We review recent advances in the study of the interaction of electromagnetic fields with gravitational perturbations, giving a number of simple examples from astrophysics and cosmology. Specifically we discuss how density velocity and gravitational wave perturbations that naturally occur in the early universe could generate and amplify seed magnetic fields to strengths capable of supporting the galactic dynamo and how gravitational waves emitted during the black hole ringdown process might be detected indirectly via their interaction with magnetic fields in the vicinity of the photon sphere. |
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jeudi 28 juin 2007 - 11:00 Salle des séminaires Évry Schatzman Institut d'Astrophysique de Paris |
| Pages web du séminaire / Seminar's webpage |