Cancelled Star and Black Holes in Galactic Centers

by Prof. Re'Em Sari

The Hebrew University of Jerusalem

at Physics Colloquium

Tue, 09 May 2023, 15:15
Ilse Katz Institute for Nanoscale Science & Technology (51), room 015

Abstract

Most galaxies contain a super massive black hole at their centers, with mass 10^5-10^10 that of our sun. This gigantic mass reshapes the orbits of stars and stellar mass black holes around it. We discuss the processes which determine the stellar distribution around supermassive black holes, and derive the equilibrium state. We show how these relate to extreme events, observable from our own galactic center and other galactic centers in the universe. These include gravitational waves in the LISA band, tidal disruption of stars, and mysterious pulses of x-rays known as Quasi Periodic Eruptions (QPEs).

Created on 27-02-2023 by Maniv, Eran (eranmaniv)
Updaded on 09-05-2023 by Maniv, Eran (eranmaniv)