Ever since scientists made the first detection of gravitational waves from a pair of colliding black holes in 2015, evidence has been growing that the Universe ought to be full of them.
"Then, with more data, the signal will become more significant and will show spatial correlations, at which point we will know it is a gravitational wave background. We are very much looking forward to contributing several years of new data to the IPTA for the first time, to help achieve a gravitational wave background detection.
That means there's a lot more science to do before we can definitively claim that the gravitational wave background has been detected. But with the evidence to hand, it's reasonable to start getting a little bit excited.That's because, if we have detected the gravitational wave background, the likeliest source is from collisions between some of the most massive objects in the Universe – supermassive black holes.
"The detection of gravitational waves from a population of massive black hole binaries or from another cosmic source will give us unprecedented insights into how galaxies form and grow, or cosmological processes taking place in the infant Universe,""A major international effort of the scale of IPTA is needed to reach this goal, and the next few years could bring us a golden age for these explorations of the Universe.
France Dernières Nouvelles, France Actualités
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