Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2010-02-12
Astrophys.J.712:746-751,2010
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
Accepted for publication in ApJ
Scientific paper
10.1088/0004-637X/712/1/746
The energy spectra of ultra-high energy cosmic rays (CRs) measured with giant extensive air shower (EAS) arrays exhibit discrepancies between the flux intensities and/or estimated CR energies exceeding experimental errors. The well-known intensity correction factor due to the dispersion of the measured quantity in the presence of a rapidly falling energy spectrum is insufficient to explain the divergence. Another source of systematic energy determination error is proposed concerning the charged particle density measured with the surface arrays, which arises due to simplifications (namely, the superposition approximation) in nucleus-nucleus interaction description applied to the shower modeling. Making use of the essential correction factors results in congruous CR energy spectra within experimental errors. Residual differences in the energy scales of giant arrays can be attributed to the actual overall accuracy of the EAS detection technique used. CR acceleration and propagation model simulations using the dip and ankle scenarios of the transition from galactic to extragalactic CR components are in agreement with the combined energy spectrum observed with EAS arrays.
No associations
LandOfFree
Comparing the energy spectra of ultra-high energy cosmic rays measured with EAS arrays 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 Comparing the energy spectra of ultra-high energy cosmic rays measured with EAS arrays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comparing the energy spectra of ultra-high energy cosmic rays measured with EAS arrays will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-419698