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Lone high-energy neutrino likely came from shredded star in distant galaxy – Ars Technica

Provides evidence that tidal disruption events can also be cosmic particle accelerators.



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Enlarge/ The remains of a shredded star formed an accretion disk around the black hole whose powerful tidal forces ripped it apart. This created a cosmic particle accelerator spewing out fast subatomic particles.
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Roughly 700 million years ago, a tiny subatomic particle was born in a galaxy far, far away and began its journey across the vast expanses of our universe. That neutrino finally reached the Earth’s South Pole last October, setting off detectors buried deep…

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