MG11 |
Participant |
Dolan, Sam | |
Institution |
Cavendish Labs, University of Cambridge - Madingley Road - Cambridge - - UNITED KINGDOM | |
Session |
Talk |
Abstract |
AT4 |
Wave scattering and absorption by rotating black holes |
In this talk I will discuss the scattering and absorption of quantum waves. I start by reviewing the wave equations that describe linear perturbations in physical fields on the Schwarzschild and Kerr backgrounds. I look at perturbative and numerical methods for determining cross sections, and present new results for fermion waves. Next, I examine the effects of spin on cross sections and polarisation, and discuss the absence of superradiance for fermions in the Kerr case. Finally, I outline difficulties in constructing solutions that are physical at both horizons on the Kerr background. |