Gravitational waves: Perspectives of detection

With Giovanni Losurdo, the PI of Advanced Virgo, we recently dwelled on this subject in an invited review paper [1]. Here I first give a short introduction by answering in brief to a few basic and relevant questions, which I was often asked by colleagues not specifically working on gravitation. Then I highlight the main considerations discussed in [1], in a sort of guide for the reader, where more details and an extensive reference list can be found. For more complete info, I call the attention to a number of beautiful pictures, kindly provided by my colleagues, which I put on the IFAE website, but are not given here nor in [1]. After publication of [1], a few relevant developments occurred, especially in the long-term planning of experiments, on which I report here. To update the references would have resulted in adding some sort of ten percent more than those in [1], so I have added only a few, which I rate most recent and particularly relevant to the relative issue.