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Abstract <p>It is shown that Eddington-like accretion event in the Galactic center several million years ago and particle acceleration at accompanying shocks and jets could explain the observed cosmic ray spectrum at energies above 1 PeV. Cosmic ray particles are confined in extended (several hundred kiloparsec in size) Galactic halo. It is shown that the halo magnetic field could be as small as <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(2\times 10^{-7}\)</EquationSource> <!--NuclPhys2560199Zirakashvili-m1--> </InlineEquation> G for the effective confinement.</p>

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Ultra-High Energy Cosmic Rays from the Galactic Center

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • V. N. Zirakashvili,
  • S. I. Rogovaya

摘要

Abstract

It is shown that Eddington-like accretion event in the Galactic center several million years ago and particle acceleration at accompanying shocks and jets could explain the observed cosmic ray spectrum at energies above 1 PeV. Cosmic ray particles are confined in extended (several hundred kiloparsec in size) Galactic halo. It is shown that the halo magnetic field could be as small as \(2\times 10^{-7}\) G for the effective confinement.