Title
Characterising stationarity on initial data for black holes
Abstract
Dynamical black holes in the non-perturbative regime are not mathematically well understood. Studying the existence of symmetries in spacetimes corresponding to dynamical black holes gives us an insight into their structure. In this talk, I will discuss the construction of geometric invariants on black hole initial data that characterise the symmetries of the spacetime evolving from the initial data. Moreover, these invariants will vanish when a symmetry is present and can be used to measure the deviation from symmetry. Fundamental to this construction is the stability of apparent horizons which will also be discussed.
(No knowledge of General Relativity will be assumed)
Please note that the seminar will take place in person in room 140 of Huxley Building.