Measuring the spin distribution of supermassive black holes is of critical importance for understanding how these black holes and their host galaxies form and e

Based on graduate school lectures in contemporary relativity and gravitational physics, this book gives a complete and unified picture of the present status of

This book focuses on one mechanism in black hole physics which has proven to be universal, multifaceted and with a rich phenomenology: rotational superradiance.

Neutron stars are the most compact astronomical objects in the universe which are accessible by direct observation. Studying neutron stars means studying physic