Scientists record the largest cosmic explosion ever


Astronomers have captured a huge gamma-ray explosion more than a billion light-years away from Earth, which is the largest explosion in the universe, as it was captured by the camera, and the explosive event was the end of a star and the beginning of its transformation into a black hole, according to experts from Electron German Synchrotron in Hamburg.

This was a huge gamma-ray burst, consisting of a mixture of bright gamma-ray flashes and X-rays observed in the sky, emitted from sources far beyond the galaxy. It was also detected by the Fermi and Swift space telescopes, supported by the High Energy Stereoscopic System (HESS) telescope located on Earth in Namibia. Despite being a billion light-years away from Earth, this is in the cosmic backyard, coming from the constellation Eridanus.

The German team that spotted it says it is the most energetic radiation and the longest subsequent gamma-ray afterglow of any gamma-ray burst detected so far. Previous gamma-ray bursts were an average of 20 billion light-years away, and the blast, called GRB 190829A, was first detected on August 29, 2019.

Study co-author Dr. Andrew Taylor of Germany's Electron Synchrotron (DESY) said, we can observe the afterglow for several days and to unprecedented energies of gamma rays.

They were also able to pinpoint its spectrum down to 3.3 TeV, or a trillion times as energy as photons within visible light, and the high-energy photons were not absorbed in collisions with background light on their way to Earth, as occurs at greater distances in the universe.

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