Investigation of isotropy of the cosmic radiation for energies greater than 10 to the 13th power eV with the Frejus underground detector

Details Investigation of isotropy of the cosmic radiation for energies greater than 10 to the 13th power eV with the Frejus underground detector Investigation of isotropy of the cosmic radiation for energies greater than 10 to the 13th power eV with the Frejus underground detector

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990phdt........20s&link_type=abstract

Ph.D. Thesis Wuppertal Univ. (Germany). Fachbereich Physik.

Physics

Cosmic Rays, Energy Levels, Isotropy, Radiation Detectors, Deviation, Energy Dissipation, Muons, Point Sources, Resolution

Scientific paper

The complete muon data from the Frejus underground detector recorded during years 1984 to 1988 are analyzed. The good calorimetric resolution of the detector is used to measure the spectral index of the muons underground. Deviations are searched in time, space and spectrum of the isotropic primary cosmic ray flux. No significant deviations from the expected isotropic flux are found in the muon data underground, neither in time nor in space, or spectrum. Looking at point sources, the analysis yields upper limits on a possible excess muon flux, from the direction of Cygmus X3, Hercule X1, the Crab nebula and SN 1987a.

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