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Measuring Flavor Ratios of High-Energy Astrophysical Neutrinos
We discuss the prospects for next generation neutrino telescopes, such as IceCube, to measure the flavor ratios of high-energy astrophysical neutrinos. The expected flavor ratios at the sources areExpand
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Cosmic neutrino pevatrons: A brand new pathway to astronomy, astrophysics, and particle physics
Abstract The announcement by the IceCube Collaboration of the observation of 28 cosmic neutrino candidates has been greeted with a great deal of justified excitement. The data reported so far departExpand
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Resonant absorption of cosmic-ray neutrinos by the relic-neutrino background
Within the framework of standard big-bang cosmology and the standard electroweak model, it is shown that ..nu..nu-bar annihilation on the Z resonance is the only cosmic-ray process sensitive to relicExpand
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Neutrinos as a diagnostic of high energy astrophysical processes [rapid communication]
Abstract A leading candidate for the extragalactic source of high energy cosmic rays is the Fermi engine mechanism, in which protons confined by magnetic fields are accelerated to very high energyExpand
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An evaluation of the exposure in nadir observation of the JEM-EUSO mission
We evaluate the exposure during nadir observations with JEM-EUSO, the Extreme Universe Space Observatory, on-board the Japanese Experiment Module of the International Space Station. Designed as aExpand
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Relic neutrino absorption spectroscopy
Resonant annihilation of extremely high-energy cosmic neutrinos on big-bang relic anti-neutrinos (and vice versa) into Z-bosons leads to sizable absorption dips in the neutrino flux to be observed atExpand
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TeV γ rays and neutrinos from photodisintegration of nuclei in Cygnus OB2
TeV {gamma}-rays may provide significant information about high energy astrophysical accelerators. Such {gamma}-rays can result from the photo-de-excitation of PeV nuclei after their parents haveExpand
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Pinning down the cosmic ray source mechanism with new IceCube data
Very recently the IceCube Collaboration has reported an observation of 28 neutrino candidates with energies between 50 TeV and 2 PeV, constituting a 4.1$\sigma$ excess compared to the atmosphericExpand
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Decay of high-energy astrophysical neutrinos.
Existing limits on the nonradiative decay of one neutrino to another plus a massless particle (e.g., a singlet Majoron) are very weak. The best limits on the lifetime to mass ratio come from solarExpand
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Probing Planck scale physics with IceCube
Neutrino oscillations can be affected by decoherence induced e.g. by Planck scale suppressed interactions with the space-time foam predicted in some approaches to quantum gravity. We study theExpand
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