Sala Inter 12:00 
Seminarium Instytutu

Marek Abramowicz (CAMK Warsaw)

Gravitational waves from ultra-compact stars

I present a recent analytic solution (Horak & Abramowicz 2021, unpublished) that describes quasi-normal modes of super-compact stars close to the Bondi limit.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. They may help distinguishing between black hole versus non black hole origin of the waves.

Presentation (pdf)