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Estimating the potential of SWGO to measure the composition-dependent behaviour of the CR anisotropy

  • the SWGO Collaboration
    ,
  • Rodrigo Guedes Lang(Author)
    ,
  • Paolo Desiati(Author)
    ,
  • Gwenael Giacinti(Author)
    ,
  • Samridha Kunwar(Author)
    ,
  • Andrew M. Taylor(Author)
  • Friedrich-Alexander University Erlangen-Nürnberg
    ,
  • University of Wisconsin-Madison
    ,
  • Shanghai Jiao Tong University
    ,
  • Max Planck Institute for Nuclear Physics
    ,
  • German Electron Synchrotron
    ,
  • University of Lisbon
Research Output:
Contribution to journal
Conference article
Peer-review

Publication metrics

Metrics

SciVal
Author count
261
SciVal
Paper percentile
27

Abstract

Current cosmic ray anisotropy experiments have shown a significant swing in both the direction and the amplitude of the dipole at energies around tens of TeV. Due to the charged nature of these particles, and the presence of magnetic fields in our galaxy, an underlying composition-dependent dipole swing is expected. For this reason, combining measurements of the composition and the distribution of arrival directions is essential for unveiling the astrophysical origin of this structure. In this work, we study the potential of the upcoming Southern Wide-field Gamma-ray Observatory (SWGO) in contributing to these anisotropy studies. We present a template-based method developed for reconstructing the number of muons and separating primary cosmic rays. Preliminary resolutions of 5 − 30% in the number of muons and an accuracy of 70 − 90% in the species separation are found. A clear improvement is seen by considering a dedicated muon-counter layer in a detector, highlighting the future potential of SWGO.

Publication Information

Output type

Research Output:
Contribution to journal
Conference article
Peer-review

Original language

English

Article number

486

Journal (Volume, Issue Number)

Proceedings of Science (Volume 444)

Publication milestones

  • Published - 27/09/2024

Publication status

Published - 27/09/2024

Publication IDs

  • Scopus: 85212255617

Related Event

Title

38th International Cosmic Ray Conference, ICRC 2023

Event type

Conference

Date

26/07/2023 - 03/08/2023

Location

NagoyaJapan