We would like to invite you to the Mathematical-Physical Colloquium of the Faculty of Mathematics and Physics at Leibniz Universität Hannover:

The colloquium takes place **online** (in the StudIP course "Mathematisch-Physikalisches Kolloquium" in the BigBlueButton meeting "Kolloquium"). *Please log into StudIP, register for this course (maybe use this link again after login) and use the tab "Meetings" to enter the BigBlueButton meeting "Kolloquium".*

On Tuesday, **18.1.2022** at **17:15**,

**Prof. Dr. Guido Müller (University of Florida)**

speaks on the subject

**Gravitational waves in the next two decades**.

**Abstract:** The 2015 detection of gravitational waves generated by a pair of merging black holes 1.3 billion years ago was a watershed moment in science and has forever changed how we look at the universe. Since then, the nearly 100 observed events revealed a class of black holes we did not know existed while the multi-messenger detections of mergers involving neutron stars showed us that we are all made from star dust. But this is only the beginning of an exciting journey back in time using this obscure messenger of distortions in spacetime. Following an introduction to gravitational waves, a brief overview of the current status and future plans for ground-based observatories, I will focus mostly on LISA, the first space-based observatory which targets a vast range of different sources often involving one million to one hundred million solar mass black holes out to very high redshifts.