Nineteen cosmic ray events with energies in excess of 10²⁰ eV detected by the Telescope Array observatory (white dots). Colors indicate expected distribution of the cosmic ray flux.

From the article:

Isotropy of Cosmic Rays beyond ${10}^{20}\mathrm{eV}$ Favors Their Heavy Mass Composition
R. U. Abbasi et al. (Telescope Array Collaboration)
Phys. Rev. Lett. 133, 041001 (2024)

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