IceCube Neutrinos: From GeV to PeV
نویسندگان
چکیده
منابع مشابه
First observation of PeV-energy neutrinos with IceCube.
We report on the observation of two neutrino-induced events which have an estimated deposited energy in the IceCube detector of 1.04±0.16 and 1.14±0.17 PeV, respectively, the highest neutrino energies observed so far. These events are consistent with fully contained particle showers induced by neutral-current ν(e,μ,τ) (ν(e,μ,τ)) or charged-current ν(e) (ν(e)) interactions within the IceCube det...
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Recently, the IceCube Collaboration has reported the first observation of cosmic 2 PeV energy neutrinos giving a signal 3 above the atmospheric background [1]. More recently, 18 events 4 above the expected atmospheric background were reported with energies above 100 TeV. These neutrinos are likely to be of cosmic origin; their angular distribution is consistent with isotropy. The average spectr...
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Late time decay of very heavy dark matter is considered as one of the possible explanations for diffuse PeV neutrinos observed in IceCube. We consider implications of multimessenger constraints, and show that proposed models are marginally consistent with the diffuse γ-ray background data. Critical tests are possible by a detailed analysis and identification of the sub-TeV isotropic diffuse γ-r...
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Neutrinos offer a particularly promising eye on the extreme Universe. Neutrinos are not attenuated by intervening radiation fields such as the Cosmic Microwave Background, and so they are messengers from the very distant and very young phase of the universe. Also, neutrinos are not deflected by cosmic magnetic fields, and so they should point to their sources. In addition, there are particle ph...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2014
ISSN: 0920-5632
DOI: 10.1016/j.nuclphysbps.2013.10.058