![]() ![]() ![]() Searches for time-dependent neutrino sources with IceCube data from 2008 to 2012. Can astrophysical neutrinos trace the origin of the detected ultra-high energy cosmic rays? Mon. The highest-energy cosmic rays cannot be dominantly protons from steady sources. Constraints on the origin of cosmic rays above 10 18 eV from large-scale anisotropy searches in data of the Pierre Auger Observatory. Open questions in cosmic-ray research at ultrahigh energies. Gravitational waves and gamma-rays from a binary neutron star merger: GW170817 and GRB 170817a. The observational prospects are promising, with several high-energy-neutrino observatories already in construction, a first generation of ultra-high-energy-neutrino observatories planned to be fully deployed around 2025–2030 and, on the electromagnetic side, several wide-field-of-view instruments planned for 2025 and beyond, with great potential for discoveries and excellent neutrino follow-up capabilities.Ībbott, B. Transient sources have widely different observational characteristics and, to assess their detectability in neutrinos, the time-dependent modelling of multi-wavelength signals, multi-messenger signals and their uncertainties is essential.įurther constraints on source modelling and the actual identification of neutrino transients will be achieved by adequate and powerful neutrino detectors, combined with electromagnetic follow-up telescopes and gravitational wave detectors via efficient networks. The properties of these neutrinos, in particular their energy and flux, depend on numerous physical processes operating at different timescales and length scales, and, therefore, their description requires careful modelling combining various phenomenological or numerical methods. The production of high-energy to ultra-high-energy neutrinos is governed by the interaction of accelerated cosmic rays with photon and baryon backgrounds, and high-power astrophysical transients are promising source candidates for these energetic astroparticles. ![]()
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