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Event
 Title:
 Alexandre Le Tiec (Observatoire de Paris): Celestial Mechanics in Kerr Spacetime
 When:

26.11.2018 11.00 h
 Where:

Auditório 201 
Niterói
 Category:

Seminários
Description
Seminário do grupo de Física Teórica
Gostaríamos de convidar a todos para um seminário especial do grupo de Física Teórica. A palestra, dada pelo Prof. Alexandre Le Tiec (CNRS), deve ser (relativamente) acessível a não especialistas; então todos são bem vindos!
Data: Segundafeira, 26/11/2017
Horário: 11:00
Sala: 201
Palestrante: Alexandre Le Tiec (Observatoire de Paris)
Título: Celestial Mechanics in Kerr Spacetime
Abstract: The inspiral of a stellarmass compact object into a supermassive black hole is a promising source of gravitational waves for a future spacebased detector, such as the LISA mission. To properly model the gravitationalwave emission from such extreme mass ratio inspirals, the effects of the small body's gravitational field on its own motion  known as the gravitational selfforce (GSF)  have to be taken into account. In this talk, I will present a Hamiltonian formulation of the orbital motion of a small compact body in the Kerr geometry that takes into account all of the conservative effects of the GSF. In particular, I will explain how the dynamics can be neatly encapsulated into an effective Hamiltonian that depends only on the constants of motion. This effective Hamiltonian is used, in particular, to derive the conservative GSF correction to the orbital frequencies of the innermost stable circular orbits of a Kerr black hole, as well as a "first law of mechanics" for binary black hole systems that holds at leading order beyond the testmass approximation.
Venue
 Group:

Auditório 201
 Street:

Av. Litorânea
 ZIP:

24210346
 City:

Niterói
 State:

RJ
 Country:

Description
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