Résumé / Abstract Seminaire_GReCO

"Gravitational waves from extreme mass ratio inspirals"

Patxi Ritter
Laboratoire de Physique et Chimie de l’Environnement et de l’Espace, Université d'Orléans (Orléans, France)

The description of extreme-mass-ratio binary systems is a challenging problem in gravitational wave physics with significant relevance for the future space interferometer eLISA/NGO. The main difficulty lies in the evaluation of the effects of the small body's gravitational field on itself. To that end, an accurate computation of the perturbations produced by the small body with respect the background geometry of the large object (a massive black-hole) is required. After a presentation of the theoretical perturbative framework for EMRIs, I will present our numerical procedure to generate EMRI wave-forms in the Regge-Wheeler gauge (without radiation reaction). Then I will present an osculating method dedicated to the case of radial orbit evolution, where the trajectory of the falling particle is continuously corrected by the self-force.

lundi 10 juin 2013 - 11:00
Salle des séminaires François Arago,
Institut d'Astrophysique de Paris

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