Multi-Messenger Physics with the Pierre Auger Observatory

The Pierre Auger Collaboration

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An overview of the multi-messenger capabilities of the Pierre Auger Observatory is presented. The techniques and performance of searching for Ultra-High Energy neutrinos, photons and neutrons are described. Some of the most relevant results are reviewed, such as stringent upper bounds that were placed to a flux of diffuse cosmogenic neutrinos and photons, bounds placed on neutrinos emitted from compact binary mergers that were detected by LIGO and Virgo during their first and second observing runs, as well as searches for high energy photons and neutrons from the Galactic center that constrain the properties of the putative Galactic PeVatron, observed by the H.E.S.S.\ collaboration. The observation of directional correlations between ultra-high energy cosmic rays and either high energy astrophysical neutrinos or specific source populations, weighted by their electromagnetic radiation, are also discussed. They constitute additional multi-messenger approaches aimed at identifying the sources of high energy cosmic rays.
Original languageEnglish
Article number24
Number of pages19
JournalFrontiers in Astronomy and Space Sciences
Issue numberApril 2019
Publication statusPublished - 24 Apr 2019

Bibliographical note

28 pages, 7 figures, Review published in Frontiers in Astronomy and Space Sciences


  • astro-ph.HE


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