Gravitational Wave

Gravitational Wave

In physics, gravitational waves are ripples in the curvature of spacetime which propagate as a wave, travelling outward from the source. Predicted to exist by Albert Einstein in 1916 on the basis of his theory of general relativity, gravitational waves theoretically transport energy as gravitational radiation. Sources of detectable gravitational waves could possibly include binary star systems composed of white dwarfs, neutron stars, or black holes. The existence of gravitational waves is possibly a consequence of the Lorentz invariance of general relativity since it brings the concept of a limiting speed of propagation of the physical interactions with it. Gravitational waves cannot exist in the Newtonian theory of gravitation, since in it physical interactions propagate at infinite speed.

Although gravitational radiation has not been directly detected, there is indirect evidence for its existence. For example, the 1993 Nobel Prize in Physics was awarded for measurements of the Hulse-Taylor binary system which suggests gravitational waves are more than mathematical anomalies. Various gravitational wave detectors exist. However, they remain unsuccessful in detecting such phenomena.

Read more about Gravitational Wave:  Introduction, Effects of A Passing Gravitational Wave, Sources of Gravitational Waves, Astrophysics and Gravitational Waves, Mathematics

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High-Frequency Gravitational Waves - Effects of A Passing Gravitational Wave
... The effects of a passing gravitational wave can be visualized by imagining a perfectly flat region of spacetime with a group of motionless test particles lying in ... As a gravitational wave passes through the particles along a line perpendicular to the plane of the particles (i.e ... here in the animation are exaggerated for the purpose of discussion—in reality a gravitational wave has a very small amplitude (as formulated in ...
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... TAMA 300 is a gravitational wave detector located at the Mitaka campus of the National Astronomical Observatory of Japan ... It is a project of the gravitational wave studies group at the Institute for Cosmic Ray Research (ICRR) of the University of Tokyo ... ray studies, and is currently developing the Large Scale Cryogenic Gravitational Wave Telescope (LCGT) ...
Gravitational Wave - Mathematics - Relation To The Source
... of the orbit of a binary — we can relate the source's motion to the gravitational radiation observed far away ...
High-Frequency Gravitational Waves - Detecting Gravitational Waves - Ground-based Interferometers
... very important, they give only indirect evidence for gravitational waves ... A more conclusive observation would be a direct measurement of the effect of a passing gravitational wave, which could also provide more information about the system which generated it ... Any such direct detection is complicated by the extraordinarily small effect the waves would produce on a detector ...
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... proposed by the LIGO Laboratory and the Indian Initiative in Gravitational Observations (IndIGO) to create a world-class gravitational-wave detector in India ... The expansion of worldwide activities in gravitational-wave detection to produce an effective global network has been a goal of LIGO for many years ... In 2010, a developmental roadmap issued by the Gravitational Wave International Committee (GWIC) recommended that an expansion of the global array of interferometric detectors be pursued as a highest priority ...

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