This is something I've been curious for some time. I've heard that there is a relation between gravitational waves and black holes. Moreover, this year the quite important paper "Observation of Gravitational Waves from a Binary Black Hole Merger" was published. Now, I'm starting to study General Relativity and I want to understand better the relation between gravitational waves and black holes from a more rigorous standpoint. In truth I would like to get to some mathematical derivation of that relation. Something that starting from black hole mathematics we end up showing there is a gravitational wave generation. Is there some paper about that out there? I've been searching for this in the last few days but didn't find anything. I belive this might be in the context of the Kerr black holes as it is the one related to rotation as far as I know. Any paper is appreciated!