STellar Astrophysics & Relativity research cluster/Physics Department seminar
Black hole horizons for dynamical spacetimes
Dr. Alex Nielsen
Albert Einstein Institute/Max-Planck-Institut fur Gravitationsphysik,
Golm, Germany
Wednesday, October 27, 2010
3.00-4.30 pm
Hamilton 303
Albert Einstein Institute/Max-Planck-Institut fǖr Gravitationsphysik, Golm, Germany
The event horizon and trapping horizon are two different ways of defining the boundary of a black hole. I will present some of the differences between these approaches and show how they lead to the boundary of a black hole being at different locations in simple dynamical black hole spacetimes. I will also present some recent numerical work on the foliation dependence of trapping horizons and their uniqueness properties. The talk will give an overview of the current state of black hole horizon research and should be suitable to a general mathematical audience.
