SÉMINAIRE DU GRECO
"Gravitational waves from extreme mass ratio inspirals" 

Patxi Ritter 

The description of extrememassratio 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 blackhole) is required. After a presentation of the theoretical perturbative framework for EMRIs, I will present our numerical procedure to generate EMRI waveforms in the ReggeWheeler 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 selfforce.


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