Colloquium by Dr. Chiara Mingarelli
Pulsar Timing Arrays: The Next Window to Open on the Gravitational-Wave Universe
Dr. Chiara Mingarelli
木瓜福利影视 of Connecticut and the Center for Computational Astrophysics at the Flatiron Institute
Abstract
Galaxy mergers are a standard aspect of galaxy formation and evolution, and most (likely all) large galaxies contain supermassive black holes. As part of the merging process, the supermassive black holes should in-spiral together and eventually merge, generating a background of gravitational radiation in the nanohertz to microhertz regime. An array of precisely timed pulsars spread across the sky can form a galactic-scale gravitational wave detector in the nanohertz band. I describe the current efforts to develop and extend the pulsar timing array concept, together with recent limits which have emerged from the NANOGrav Collaboration, hinting at the beginning of a new way to study the Universe.
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If you want to join the online colloquium, please send an e-mail to Dr. Sarah Caudill.