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Michael DuVernois | Wisconsin IceCube Particle Astrophysics Center | USA

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IceCube non-detection of neutrinos from GRBs

In a new paper in Nature, IceCube shows a solid, non-detection of neutrinos from gamma-ray bursts (GRBs). That is, the expected emission of neutrinos if GRBs were the sources of the highest energy cosmic rays was not observed. There had been a generally agreed model of GRB emission, and now it’s essentially ruled out. Cosmic rays remain a mystery…

More personal comments on this in a bit, but let me send along some of the news coverage in the shorter term:

IceCube popular version of the Mystery of the Cosmic Rays

IceCube press release

“Although we have not discovered where cosmic rays come from, we have taken a major step towards ruling out one of the leading predictions,” said IceCube principal investigator and University of Wisconsin-Madison physics professor Francis Halzen.

 

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