The Anisotropies and Origins of Ultrahigh Energy Cosmic Rays
Francis Halzen
TL;DR
This paper discusses the detection of high-energy cosmic neutrinos by IceCube, their anisotropies, and potential origins, including recent multi-messenger observations linking neutrinos to a flaring TeV blazar.
Contribution
It presents the analysis of IceCube data, the significance of cosmic neutrino discovery, and the first multi-messenger observation connecting neutrinos to a specific astrophysical source.
Findings
Detection of a flux of high-energy cosmic neutrinos
Significance of cosmic neutrino discovery confirmed
Multi-messenger observation linked neutrinos to a TeV blazar
Abstract
IceCube detects more than 100,000 neutrinos per year in the GeV- to PeV-energy range. Among those, we have isolated a flux of high-energy cosmic neutrinos. I will discuss the instrument, the analysis of the data, the significance of the discovery of cosmic neutrinos, and the recent multi-messenger observation of a flaring TeV blazar in coincidence with the IceCube neutrino alert IC170922.
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Radio Astronomy Observations and Technology · Neutrino Physics Research