Brief Context
Context The construction of the Laser Interferometer Gravitational-Wave Observatory (LIGO)-India in Hingoli district, Maharashtra has faced delays, as the Engineering, Procurement and Construction tender is yet to be awarded nearly a year after being floated. About LIGO-India LIGO-India is a major mega-science project aimed at detecting gravitational waves, ripples in spacetime, predicted by Albert Einstein in his Theory of General Relativity (1915). These waves are produced by phenomena such as
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Syllabus: GS3/ Science and Technology
Context
- The construction of the Laser Interferometer Gravitational-Wave Observatory (LIGO)-India in Hingoli district, Maharashtra has faced delays, as the Engineering, Procurement and Construction tender is yet to be awarded nearly a year after being floated.
About LIGO-India
- LIGO-India is a major mega-science project aimed at detecting gravitational waves, ripples in spacetime, predicted by Albert Einstein in his Theory of General Relativity (1915).
- These waves are produced by phenomena such as Black hole mergers, Neutron star collisions and Supernova explosions.
- The project is part of the global LIGO network, working in coordination with facilities in the United States.
Key Features of LIGO-India Project
- LIGO uses laser interferometry to detect tiny distortions in spacetime caused by passing gravitational waves.
- Each interferometer has two arms measuring about 4 km in length, arranged at right angles in an “L” shape.
- These arms contain ultra-high vacuum tubes through which laser beams travel and reflect off mirrors placed at the ends.
- When gravitational waves pass through Earth, they cause extremely tiny changes in the length of the arms, which alter the interference pattern of the laser beams.
- By operating simultaneously, the interferometers act as antennae that detect gravitational waves produced by powerful cosmic events such as black hole mergers and neutron star collisions.
Significance of LIGO-India Project
- New Window to the Universe: Gravitational waves allow scientists to observe cosmic events invisible to traditional telescopes, such as Black hole mergers, Neutron star collisions and Supernova explosions.
- Strengthening Global Scientific Collaboration: LIGO-India will join the global gravitational wave detector network, improving signal accuracy and source localisation of cosmic events.
- Boost to India’s Scientific Capability: It enhances India’s role in frontier physics and astronomy. It also promotes high-precision engineering, lasers, vacuum systems, and data science.
- Technological Spillovers: The project will generate innovations in precision instrumentation, photonics, advanced materials, and big data analysis, which can benefit sectors such as defence, space research, and advanced manufacturing.
Challenges in LIGO-India Project
- Technical Expertise: The project requires highly specialised scientists, engineers, and technicians in fields such as photonics, precision instrumentation, and data science.
- Environmental Sensitivity: Gravitational wave detectors are extremely sensitive to seismic vibrations, human activity, and environmental disturbances.
- Complex Engineering Requirements: The project requires extremely high-precision engineering to detect distortions smaller than a proton, making it technically challenging to maintain such accuracy across several kilometres of infrastructure.
Source: IE