Robert Lea is a science journalist in the U.K. whose articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space, Newsweek and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.
's Fermi gamma-ray space telescope has examined what may have been the most powerful explosion since the Big Bang, discovering a hitherto unseen feature. The feature could be the result of matter and antimatter particles annihilating at 99.9% the speed of light.
recorded an unusual energy peak that caught our attention," research leader Maria Edvige Ravasio from Radboud University said in a statement."When I first saw that signal, it gave me goosebumps. Our analysis since then shows it to be the first high-confidence emission line ever seen in The first gamma-ray burst was seen in 1967 by the U.S. Vela satellites; it was officially documented two years later, then revealed to the public in 1973.
When light passes through matter, because elements absorb and emit light at specific frequencies, they leave absorption and emission"fingerprints" on this light. This means scientists can reconstruct the elements this light passed through and determine the chemical compositions of objects it has interacted with.
A illustration of the supernova that launched teh BOAT, the gamma-ray burst that is the most powerful cosmic explosion since the Big BangThe emission line seen by Fermi in the light from the BOAT lasted for about 40 seconds, reaching a peak energy of 12 million electron volts . The energy of light in the visible region of the"twin." When these particles meet, they annihilate, releasing their energy back to the universe.
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