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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 first direct observation of gravitational waves was made on 14 September 2015 and was announced by the LIGO and Virgo collaborations on 11 February 2016. [3] [4] [5] Previously, gravitational waves had been inferred only indirectly, via their effect on the timing of pulsars in binary star systems.
On September 14, 2015, the Advanced LIGO Documentary team was on location filming at the LIGO Livingston Observatory when the detection was made. [4] Over the next five months, it had exclusive media access to document the long, careful process of scientific verification that was conducted by the LIGO Scientific Collaboration to confirm that the received signal was in fact a gravitational wave ...
Currently, the most sensitive ground-based laser interferometer is LIGO – the Laser Interferometer Gravitational Wave Observatory. LIGO is famous as the site of the first confirmed detections of gravitational waves in 2015. LIGO has two detectors: one in Livingston, Louisiana; the other at the Hanford site in Richland, Washington.
An automatic computer search of the LIGO-Hanford datastream triggered an alert to the LIGO team about 6 minutes after the event. The gamma-ray alert had already been issued at this point (16 seconds post-event), [21] so the timing near-coincidence was automatically flagged. The LIGO/Virgo team issued a preliminary alert (with only the crude ...
Number 3.Utah potash mining ponds. Vast expanses of the valuable potassium-rich mineral, which is often used to fertilize crops, are drawn from the Earth at this site.
There are several ground-based laser interferometers which span several miles/kilometers, including: the two Laser Interferometer Gravitational-Wave Observatory (LIGO) detectors in WA and LA, USA; Virgo, at the European Gravitational Observatory in Italy; GEO600 in Germany, and the Kamioka Gravitational Wave Detector (KAGRA) in Japan. While ...
LIGO is a 2019 American documentary film that tells the inside account of the discovery by the international LIGO Scientific Collaboration of the first observation of gravitational waves in September 2015, [1] a discovery that led two years later to the Nobel Prize in Physics for LIGO physicists Rai Weiss, Kip Thorne and Barry Barish. [2]