July 23, 2024

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Radio waves from other galaxies reached Earth after 8 billion years!

Radio waves from other galaxies reached Earth after 8 billion years!

On Thursday, an astonishing discovery made astronomers sit on hot coals: they discovered an object A loud explosion of radio waveswhich is according to that It took 8 billion years to reach Earth.

In fact, that makes it like Oldest radio explosionwhich defies all logic, because it comes from billions of years back, while emitting the equivalent of the sun’s total emission for 30 years.

Its power may have been enormous, but it lasted less than a millisecond. spotted before Very Large Telescope (VLT) to European Southern Observatory (ESO) and found to be Merging a group of two or three galaxies. Astronomers called it VLT FRB 20220610A They published their study in the journal Science.

the Radio waves or fast radio bursts (FRBs)For those who don’t know, they are intense bursts of radio waves lasting milliseconds, of unknown origin, and usually coming from the far reaches of space. The first FRB was detected in 2007, and since then hundreds of these fast cosmic flares have been detected coming from different distant parts of the universe. Another 50 such powerful flames have been observed.

We don’t yet know what causes these massive bursts of energy, but their discovery offers new insights into the distant universe. At the same time, it has been confirmed that fast radio bursts can be used to measure “missing” matter between galaxies and provide a new way to estimate the mass of the universe.

“If we measure the amount of normal matter in the universe – the atoms of which we are all composed – we find that more than half of what should be there today is missing. We think the missing matter is hidden in intergalactic space, but it could be so warm and diffuse that it is impossible to see.” With normal techniques“, explains Professor at Swinburne University of Technology in Australia, Ryan Shannon, one of the directors of the study.Fast bursts of radio waves detect this ionized material. added the scientist.

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