Photon air showers at ultra-high energy and the photonuclear cross-section

@article{Risse2005PhotonAS,
  title={Photon air showers at ultra-high energy and the photonuclear cross-section},
  author={Markus Risse and Piotr Homola and Ralph Engel and Dariusz G{\'o}ra and D. Heck and Jan Pekala and Barbara Wilczynska and Henryk Wilczynski},
  journal={Czechoslovak Journal of Physics},
  year={2005},
  volume={56},
  pages={A327-A336}
}
Experimental conclusions from air shower observations on cosmic-ray photons above 1019 eV are based on the comparison to detailed shower simulations. For the calculations, the photonuclear cross-section needs to be extrapolated over several orders of magnitude in energy. The uncertainty from the cross-section extrapolation translates into an uncertainty of the predicted shower features for primary photons and, thus, into uncertainties for a possible data interpretation. After briefly reviewing… Expand

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References

SHOWING 1-10 OF 62 REFERENCES
Simulation of ultra-high energy photon propagation in the geomagnetic field
TLDR
A Monte Carlo program allowing detailed studies of conversion and cascading of UHE photons in the geomagnetic field and the possibility of investigating signatures of photon-initiated showers. Expand
Upper Limit on Gamma-Ray Flux above 1019 eV Estimated by the Akeno Giant Air Shower Array Experiment
The origin of the highest energy cosmic rays (≥1020 eV) is not well understood. Interesting models called "top-down" scenarios have been proposed to explain the origin. The γ-ray flux inExpand
Primary particle type of the most energetic Fly's Eye air shower
Abstract The longitudinal profile of the most energetic cosmic-ray air shower measured so far, the event recorded by the Fly's Eye detector with a reconstructed primary energy of about 3.2 × 10 20Expand
Upper limit on the photon fraction in highest-energy cosmic rays from AGASA data.
TLDR
A new method to derive an upper limit on photon primaries from small data sets of air showers is developed which accounts for shower properties varying with the primary energy and arrival direction, and constrains the -burst model of the origin of highest-energy cosmic rays. Expand
On the primary particle type of the most energetic Fly's Eye event
The longitudinal profile of the 320 EeV event observed by the Fly's Eye experiment is analysed. A method of testing the hypothesis of a specific primary particle type is described. Results forExpand
Detection of a Cosmic Ray with Measured Energy Well beyond the Expected Spectral Cutoff due to Cosmic Microwave Radiation
We report the detection of a 51-joule (320 +/- 90 EeV) cosmic ray by the Fly's Eye air shower detector in Utah. This is substantially greater than the energy of any previously reported cosmic ray. AExpand
New constraints from haverah park data on the photon and iron fluxes of ultrahigh-energy cosmic rays
TLDR
Using data from inclined events recorded by the Haverah Park shower detector, it is shown that above 10(19) eV less than 41% of the primary cosmic rays can be photons (iron nuclei) at the 95% confidence level. Expand
Energy determination in the Akeno Giant Air Shower Array experiment
Abstract Using data from more than 10 years of observations with the Akeno Giant Air Shower Array (AGASA), we published a result that the energy spectrum of ultra-high energy cosmic rays extendsExpand
Observation of the ankle and evidence for a high-energy break in the cosmic ray spectrum
Abstract We have measured the cosmic ray spectrum at energies above 10 17 eV using the two air fluorescence detectors of the High Resolution Fly's Eye experiment operating in monocular mode. WeExpand
Origin and propagation of extremely high-energy cosmic rays
Abstract Cosmic-ray particles with energies in excess of 10 20  eV have been detected. The sources as well as the physical mechanism(s) responsible for endowing cosmic-ray particles with suchExpand
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2
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4
5
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