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IceCube neutrinos point to long-sought cosmic ray accelerator  
On July 12 2018, the National Science Foundation held a press release on a breakthrough in multi-messenger astrophysics related to the origins of high energy cosmic rays. IceCube’s observation of a high energy muon neutrino event, identified as IceCube-170922A, from the direction of a known flaring blazar TXS 0506+056, prompted observations of associated photon counterparts, such as gamma-rays, X-rays, and optical and radio radiation, from other instruments on Earth and in space. This ultimately provided the first evidence for a known blazar as a source of high-energy astrophysical neutrinos, which were discovered by IceCube in 2013. The new results are published in two papers in Science. The IceCube group at Stony Brook, led by associate professor Joanna Kiryluk, is deeply involved in the precise measurement and characterization of the diffuse astrophysical (electron and tau) neutrino flux.

More information can be found here:

IceCube Neutrinos Point to Long-Sought Cosmic Ray Accelerator

July 12, NSF Press Conference on Breakthrough in Multi-messenger Astrophysics

Two Science article (published July 12): here and here.


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