Washington: Researchers have developed a new technology that aims to make the Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) even more sensitive to gravitational waves faint ripples in space-time. The team from Massachusetts Institute of Technology (MIT) and Australian National University report on improvements to what is called a squeezed vacuum source.
Although not part of the original Advanced LIGO design, injecting the new squeezed vacuum source into the LIGO detector could help double its sensitivity. This will allow detection of gravitational waves that are far weaker or that originate from farther away than is possible now. “There are many processes in the universe that are inherently dark; they don’t give off light of any colour,” said Nergis Mavalvala from MIT Kavli Institute for Astrophysics and Space Research.
“Since many of those processes involve gravity, we want to observe the universe using gravity as a messenger,” Mavalvala said in a paper that appeared in the Optica. Scientists at Advanced LIGO announced the first-ever observation of gravitational waves earlier this year a century after Albert Einstein predicted their existence in his general theory of relativity. IANS
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