Volume 337 - Neutrino Oscillation Workshop (NOW2018) - Session III: Multimessenger astrophysics
Anisotropy studies with the Pierre Auger Observatory
R. de Almeida* on behalf of the Pierre Auger Collaboration
*corresponding author
Full text: pdf
Published on: April 24, 2019
Abstract
The search for understanding the cosmos has led mankind to a deep investigation of the sky. Using telescopes that capture radiation in various wavelength ranges, we can assess the existence of planets, stars, galaxies, clusters of galaxies, etc. In addition to electromagnetic radiation, subatomic particles, such as nucleons, or atomic nuclei, that propagate from space to our planet, here defined as cosmic rays, carry information that is revealing about the Universe. In particular, for those with energies above 10$^{18}$ eV called Ultra High Energy Cosmic Rays (UHECR), interactions with the Earth's atmosphere make it possible to estimate their energy and chemical composition as well as to relate their arrival directions with potential astrophysical sources. In this work we describe two recent results obtained by the Pierre Auger Collaboration related to anisotropy studies. These are the large-scale anisotropy observed in the arrival direction of the events detected with energies above 8 EeV and indications of anisotropy at intermediate scales for those with energies above 40 EeV.
DOI: https://doi.org/10.22323/1.337.0053
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