CMSA General Relativity: Quasinormal Modes from Penrose Limits

SEMINARS, CMSA EVENTS

Speaker:

Kwinten Fransen - UC Santa Barbara

In this talk, I will explain how to describe quasinormal modes with large real frequencies using Penrose limits.To do so, I first recall relevant aspects of the Penrose limit, and its resulting plane wave spacetimes, as well as quasinormal modes to subsequently tie these together. Having established the main principle, I will illustrate the usefulness of this point of view with the geometric realization of the emergent symmetry algebra underlying the quasinormal modes in the large real frequency limit and present its application to the astrophysically important example of Kerr black holes. Based on arXiv:2301.06999.

This seminar will be held on Zoom. For more information on how to join, please see: https://cmsa.fas.harvard.edu/event_category/general-relativity/