Recent results from the Pierre Auger Observatory—Including comparisons with data from AGASA and HiRes

Details Recent results from the Pierre Auger Observatory—Including comparisons with data from AGASA and HiRes Recent results from the Pierre Auger Observatory—Including comparisons with data from AGASA and HiRes

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008nimpa.588..221w&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section A, Volume 588, Issue 1-2, p. 221-226.

Physics

11

Composition, Energy Spectra And Interactions, Extensive Air Showers, Cosmic Rays, Cosmic-Ray Interactions

Scientific paper

The status of the Pierre Auger Observatory is described. Recent measurements from the Observatory relating to the arrival direction distribution, mass composition and energy spectrum above 1018 eV are presented. No anisotropy has yet been detected. From measurements of the variation of the depth of shower maximum with energy, there are indications—if models of high-energy interactions are correct—that the mass composition is not proton dominated at the highest energies. A flattening of the slope of the energy spectrum from -3.30±0.06 to -2.62±0.02 is observed at 4.5×1018 eV while above 3.6×1019 eV the spectrum steepens with the slope becoming -4.1±0.4. Because of the composition result, caution needs to be observed over interpretation of the steepening as the long-sought Greisen Zatsepin Kuzmin effect. The results are discussed in the context of similar data from the AGASA and HiRes projects and are compared with some models for the propagation of high-energy cosmic rays.

Affiliated with

Also associated with

No associations

Rating

Recent results from the Pierre Auger Observatory—Including comparisons with data from AGASA and HiRes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Recent results from the Pierre Auger Observatory—Including comparisons with data from AGASA and HiRes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recent results from the Pierre Auger Observatory—Including comparisons with data from AGASA and HiRes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1720028