'LIGO-India Observatory will enable dramatic astronomy and astrophysics returns anticipated in the coming decade'
interferometers), a scientific achievement whose significance was recognized by winning the Nobel Prize in Physics in 2017.
LIGO, a giant L-shaped instrument, consists of two 4 km long arms- concrete structures that protect vacuum tubes residing inside. Each arm shoots laser pulses simultaneously that bounce off a mirror at the end and return to the vertex. A detector checks if these return at the same time.The presence of gravitational waves results in a slight delay in the return of these pulses, enabling researchers to study and record them.
Although the two existing LIGOs- in Louisiana and Washington in the US- can study gravitational waves, there is a need for multiple detectors- ideally three or more- to localize the location of a source in the sky. More of these are being set up and upgraded in Italy and Japan.project will be built with a memorandum of understanding with the National Science Foundation, US, along with several national and international research and academic institutions.
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