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The Laser Interferometer Gravitational-Wave Observatory (LIGO) is a large-scale physics experiment and observatory designed to detect cosmic gravitational waves and to develop gravitational-wave observations as an astronomical tool. [1]
The Kamioka Gravitational Wave Detector (KAGRA) is a large interferometer designed to detect gravitational waves predicted by the general theory of relativity.KAGRA is a Michelson interferometer that is isolated from external disturbances: its mirrors and instrumentation are suspended and its laser beam operates in a vacuum.
A schematic diagram of a laser interferometer. A gravitational-wave detector (used in a gravitational-wave observatory) is any device designed to measure tiny distortions of spacetime called gravitational waves. Since the 1960s, various kinds of gravitational-wave detectors have been built and constantly improved.
Laser Interferometer Gravitational-Wave Observatory (LIGO) and new Exploration Center in Richland. LIGO holds public tours of the LExC and laboratory on the second Saturday of each month, and is ...
The Laser Interferometer Space Antenna (LISA) is a planned space probe to detect and measure gravitational waves [2] —tiny ripples in the fabric of spacetime—from astronomical sources. [3] LISA will be the first dedicated space-based gravitational-wave observatory. It aims to measure gravitational waves directly by using laser interferometry.
This project was eventually founded in 1992 as the Laser Interferometer Gravitational-Wave Observatory (LIGO). The original instruments were upgraded between 2010 and 2015 (to Advanced LIGO), giving an increase of around 10 times their original sensitivity. [36]
Mathematically speaking, if is the amplitude (assumed to be small) of the incoming gravitational wave and the length of the optical cavity in which the light is in circulation, the change of the optical path due to the gravitational wave is given by the formula: [9] = with being a geometrical factor which depends on the relative orientation ...
The IndIGO Consortium has spearheaded the proposal for the LIGO-India gravitational wave observatory, in association with the LIGO laboratory in US.In addition to the LIGO-India project, the other activities of IndIGO involve facilitating international collaborations in gravitational-wave physics and astronomy, initiating a strong experimental gravitational-wave research program in India ...