The first 5 years of gravitational-wave astrophysics
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Publication:5092800
DOI10.1126/SCIENCE.ABC7397zbMATH Open1491.83003arXiv2011.03563OpenAlexW3104566442MaRDI QIDQ5092800
Publication date: 25 July 2022
Published in: Science (Search for Journal in Brave)
Abstract: Gravitational waves are ripples in spacetime generated by the acceleration of astrophysical objects. A direct consequence of general relativity, they were first directly observed in 2015 by the twin Laser Interferometer Gravitational-Wave Observatory (LIGO) observatories. I review the first five years of gravitational wave detections. More than fifty gravitational waves events have been found, emitted by pairs of merging compact objects such as neutron stars and black holes. These signals yield insights into the formation of compact objects and their progenitor stars, enable stringent tests of general relativity and constrain the behavior of matter at densities higher than an atomic nucleus. Mergers that emit both gravitational and electromagnetic waves probe the formation of short gamma ray bursts, the nucleosynthesis of heavy elements, and measure the local expansion rate of the Universe.
Full work available at URL: https://arxiv.org/abs/2011.03563
Research exposition (monographs, survey articles) pertaining to relativity and gravitational theory (83-02) Observational and experimental questions in relativity and gravitational theory (83B05) Gravitational waves (83C35)
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