Arrival directions of cosmic rays of E greater than 0.4 EeV

Details Arrival directions of cosmic rays of E greater than 0.4 EeV Arrival directions of cosmic rays of E greater than 0.4 EeV

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...303..333b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 303, April 1, 1986, p. 333-335.

Astronomy and Astrophysics

Astrophysics

2

Cosmic Rays, Radiation Distribution, Radiation Sources, Astronomical Coordinates, Bearing (Direction), Isotropy, Milky Way Galaxy, Radiation Detectors

Scientific paper

An attempt has been made to find the sources of cosmic rays using the Utah Fly's Eye detector; no statistically significant departure from isotropy has been observed for energies greater than 0.4 EeV, where 1 EeV is equal to 10 to the 18th eV. If a significant fraction of the observed cosmic rays are Galactic Fe, or 'universal' extragalactic protons, then the observed uniformity of arrival directions would be reasonable. The present isotropic results favor a universal extragalactic source.

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