Ultrahigh Energy Cosmic Rays: A Galactic Origin?

David Eichler, Noemie Globus, Rahul Kumar, Eyal Gavish

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


It is suggested that essentially all UHECRs we detect, including those at the highest energies, originate in our Galaxy. It is shown that even if the density of sources decreases with Galactic radius, then the anisotropy and composition can be understood. Inward anisotropy, as recently reported by the Auger collaboration can be understood as drift along the current sheet of UHECRs, originating outside of the solar circle, as predicted in Kumar & Eichler, while those originating within the solar circle exit the Galaxy at high latitudes.

Original languageEnglish
Article numberL24
JournalAstrophysical Journal Letters
Issue number2
StatePublished - 20 Apr 2016


  • acceleration of particles
  • cosmic rays
  • shock waves

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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