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Galactic PeV neutrinos
Affiliation:1. Department of Mechanical Engineering, University of Kentucky, Lexington, KY 40506-0503, USA;2. Department of Aircraft Engineering, Erciyes University, Melikgazi, Kayseri, 38039, Turkey;3. Department of Civil and Environmental Engineering, University of Virginia, Charlottesville, VA 22901, USA;1. Institute of High Technologies, Taras Shevchenko National University of Kiev, 4-g, Academician Glushkov Ave., Kiev 03022, Ukraine;2. Bogolyubov Institute for Theoretical Physics, NASU, 14-b, Metrolohichna Str., Kiev 03143, Ukraine;3. North Carolina Central University, Durham, NC, USA;4. INFN-Laboratori Nazionali di Frascati, 40, Via E. Fermi, Frascati 00044, Italy;1. Graduate School of Advanced Sciences of Matter, Hiroshima University, Higashi‐Hiroshima 739-8530, Japan;2. Cryogenic and Instrumental Analysis Division, N-BARD, Hiroshima University, Higashi‐Hiroshima 739-8526, Japan;1. Department of Physics, Brown University, Providence, RI 02912, USA;2. National High Magnetic Field Laboratory, Tallahassee, FL 32310, USA;3. Department of Applied Physics and Geballe Laboratory for Advanced Materials, Stanford University, CA 94305, USA;1. Key Laboratory of Automobile Materials of Ministry of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130022, PR China;2. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun, 130022, PR China;3. The College of Liberal Arts and Science, Arizona State University, AZ 85287, United States;4. Department of Electrical and Computer Engineering, University of California Davis, CA 95616, United States
Abstract:The IceCube experiment has detected two neutrinos with energies between 1 and 10 PeV. They might have originated from Galactic or extragalactic sources of cosmic rays. In the present work we consider hadronic interactions of the diffuse very high energy cosmic rays with the interstellar matter within our Galaxy to explain the PeV neutrino events detected in IceCube. We also expect PeV gamma ray events along with the PeV neutrino events if the observed PeV neutrinos were produced within our Galaxy in hadronic interactions. PeV gamma rays are unlikely to reach us from sources outside our Galaxy due to pair production with cosmic background radiation fields. We suggest that in future with simultaneous detections of PeV gamma rays and neutrinos it would be possible to distinguish between Galactic and extragalactic origins of very high energy neutrinos.
Keywords:PeV neutrinos  Very high energy cosmic rays
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