Gravitational waves from ultra-compact stars: new theoretical results

by Marek Abramowicz (University of Gothenburg)

Wednesday 2 Jun 2021, 13:30 → 14:30 Europe/Stockholm

https://stockholmuniversity.zoom.us/j/530682073

I present a recent analytic solution (Horak & Abramowicz 2021, unpublished) that describes quasi-normal modes of super-compact stars close to the Bondi limit. In the LIGO-Virgo terminology these are wave-fronts and frequencies of ringdowns and echoes. The new results will help distinguishing between black hole versus non black hole origin of the waves. They may also constrain some quantum-gravity ideas about the quantum black hole alternatives, like firewalls and gravastars.

https://stockholmuniversity.zoom.us/j/530682073

Abramowicz_2021-Jun-02.mp4