For the first time, researchers reveal the origin of neutrinos, elementary particles that reach our planet from the depths of the Universe. Highly energetic and difficult to detect, neutrinos travel billions of light years before reaching Earth. Although it is known that these elementary particle
Beginning a Journey Across the Universe: The Discovery of Extragalactic Neutrino Factories. Credit: © Benjamin Amend
Highly energetic and difficult to detect, neutrinos travel billions of light years before reaching Earth. Although it is known that these elementary particles come from the depths of our Universe, their precise origin is still a mystery. An international research team, led by the University of Würzburg and the University of Geneva , is shedding light on one aspect of this enigma: neutrinos are thought to be born in blazars, galactic nuclei fed by supermassive black holes.
To arrive at these results, the research team utilized neutrino data from the IceCube Neutrino Observatory in Antarctica — the most sensitive neutrino detector currently in operation — and BZCat, one of the most accurate catalogues of blazars. “With this data, we had to prove that the blazars whose directional positions coincided with those of the neutrinos were not there by chance.
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