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Cosmic sirens: discovery of gravitational waves and their impact on astrophysics and fundamental physics

Dhurandhar, Sanjeev and Sathyaprakash, Bangalore 2017. Cosmic sirens: discovery of gravitational waves and their impact on astrophysics and fundamental physics. Current Science 113 (4) , pp. 663-671. 10.18520/cs/v113/i04/663-671

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Abstract

On 14 September 2015, the twin detectors belonging to the Laser Interferometer Gravitational Wave Observatory (LIGO) made a triple discovery: the first direct detection of gravitational waves (GWs), first observation of formation of a black hole and first observation of a binary black hole. Since then LIGO has reported two other events and a marginal candidate. These discoveries have heralded a new era in observational astronomy. They will help us in exploring extremes of astrophysics and gravity. GWs are our best chance of getting an idea of what went on a small fraction of a second after the big bang, even if that takes many more decades. With LIGO’s discoveries we hope to solve many puzzles in astronomy and fundamental physics, but GWs are guaranteed to show up objects and phenomena never imagined before.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Publisher: Current Science Assoc // Indian Academy of Sciences
ISSN: 0011-3891
Date of First Compliant Deposit: 15 September 2017
Date of Acceptance: 25 August 2017
Last Modified: 01 Nov 2017 14:10
URI: http://orca.cf.ac.uk/id/eprint/104679

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