Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1771306 | Astroparticle Physics | 2009 | 8 Pages |
Abstract
The High Resolution Fly’s Eye (HiRes) experiment has measured the flux of ultrahigh energy cosmic rays using the stereoscopic air fluorescence technique. The HiRes experiment consists of two detectors that observe cosmic ray showers via the fluorescence light they emit. HiRes data can be analyzed in monocular mode, where each detector is treated separately, or in stereoscopic mode where they are considered together. Using the monocular mode the HiRes collaboration measured the cosmic ray spectrum and made the first observation of the Greisen–Zatsepin–Kuzmin cutoff. In this paper we present the cosmic ray spectrum measured by the stereoscopic technique. Good agreement is found with the monocular spectrum in all details.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Astronomy and Astrophysics
Authors
R.U. Abbasi, T. Abu-Zayyad, M. Al-Seady, M. Allen, J.F. Amann, G. Archbold, K. Belov, J.W. Belz, D.R. Bergman, S.A. Blake, O.A. Brusova, G.W. Burt, C. Cannon, Z. Cao, W. Deng, Y. Fedorova, J. Findlay, C.B. Finley, R.C. Gray, W.F. Hanlon, C.M. Hoffman,