An alternative method to finding patterns in HiRes stereo data

R. U. Abbasi, T. Abu-Zayyad, J. F. Amman, G. C. Archbold, K. Belov, S. A. Blake, J. W. Belz, S. BenZvi, D. R. Bergman, J. H. Boyer, G. W. Burt, Z. Cao, B. M. Connolly, W. Deng, Y. Fedorova, J. Findlay, C. B. Finley, R. C. Gray, W. F. Hanlon, C. M. HoffmanM. H. Holzscheiter, G. A. Hughes, P. Hüntemeyer, B. F. Jones, C. C.H. Jui, K. Kim, M. A. Kirn, B. C. Knapp, E. C. Loh, M. M. Maestas, N. Manago, E. J. Mannel, L. J. Marek, K. Martins, J. A.J. Matthews, J. N. Matthews, S. A. Moore, A. O'Neill, C. A. Painter, L. Perera, K. Reil, R. Riehle, M. Roberts, D. Rodriguez, M. Sasaki, S. Schnetzer, L. M. Scott, M. Seman, G. Sinnis, J. D. Smith, P. Sokolsky, C. Song, R. W. Springer, B. T. Stokes, J. R. Thomas, S. B. Thomas, G. B. Thomson, D. Tupa, S. Westerhoff, L. R. Weincke, A. Zech, X. Zhang

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2 Scopus citations

Abstract

In this paper ultra-high energy cosmic rays UHECRs data observed by the HiRes fluorescence detector in stereo mode is analyzed to search for events in the sky with an arrival direction lying on a great circle. Such structure is known as the arc structure. The arc structure is expected when the charged cosmic rays pass through the galactic magnetic field. The arcs searched for could represent a broad or a small scale anisotropy depending on the proposed source model for the UHECRs. The arcs in this paper are looked for using Hough transform were Hough transform is a technique used to looking for patterns in images. No statistically significant arcs were found in this study.

Original languageEnglish (US)
Pages (from-to)385-389
Number of pages5
JournalAstroparticle Physics
Volume28
Issue number4-5
DOIs
StatePublished - Dec 2007

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics

Keywords

  • AGASA
  • Anisotropy
  • HiRes
  • Hough transform
  • Ultra-high energy cosmic rays

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