Speaker
Davide Usseglio
Description
In this talk I will discuss the general strategy employed for solving analytically the Teukolsky equation where the perturbation is sourced by a particle in a hyperbolic orbit. This method relies on a combination of post-Newtonian (PN) and post-Minkowskian (PM) expansion in order to extract analytical information and it has been used for studying the scattering of a scalar charge around a Schwarzschild black hole. In the second part of my talk I’ll discuss the state of our works in the gravitational case, highlighting the difficulties faced in going to high order in PM and PN for the computation of the waveform and the fluxes.
