1.
Phys Rev Lett
; 92(15): 151101, 2004 Apr 16.
Article
in English
| MEDLINE
| ID: mdl-15169276
ABSTRACT
We have measured the cosmic ray spectrum above 10(17.2) eV using the two air-fluorescence detectors of the High Resolution Fly's Eye observatory operating in monocular mode. We describe the detector, phototube, and atmospheric calibrations, as well as the analysis techniques for the two detectors. We fit the spectrum to a model consisting of galactic and extragalactic sources.