Bengaluru: Scientists detect fourth gravitational wave

Story By: Rajesh Sharma
Friday, September, 29 2017 - 13:03

Scientists said that they have successfully detected the fourth gravitational wave, ripples in space and time, from the merger of two massive black holes.

"The LIGO (Laser Interferometer Gravitational-wave Observatory) in the US and the Virgo observatory in Europe have observed the gravitational wave signals from yet another merging black hole pair," LIGO scientists said in a statement on Wednesday.Until the first detection of gravitational waves by the LIGO team in 2015, they existed only in Einstein's theory.

The latest event, scientists said, was the first time when a third detector—other than the two operated by LIGO—confirmed.

The LIGO-Virgo collaboration includes more than a thousand scientists from many different countries. The recent publication has 40 authors from 13 Indian institutions.

"The Virgo detector started collecting data on August 1 2017, and was soon bestowed with a detection, jointly with LIGO. The signal was produced by the merger of two massive black holes, weighing 31 and 25 times the mass of the Sun at a distance of 1.7 billion light years away from us. An energy equivalent to the mass of three Suns was radiated as gravitational waves in this energetic astronomical event," the scientists said.


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