On the absolute value of the air-fluorescence yield
arXiv:1401.4310 · doi:10.1016/j.astropartphys.2014.02.003
Abstract
The absolute value of the air-fluorescence yield is a key parameter for the energy reconstruction of extensive air showers registered by fluorescence telescopes. In previous publications, we reported a detailed Monte Carlo simulation of the air-fluorescence generation that allowed the theoretical evaluation of this parameter. This simulation has been upgraded in the present work. As a result, we determined an updated absolute value of the fluorescence yield of 7.9+-2.0 ph/MeV for the band at 337 nm in dry air at 800 hPa and 293 K, in agreement with experimental values. We have also performed a critical analysis of available absolute measurements of the fluorescence yield with the assistance of our simulation. Corrections have been applied to some measurements to account for a bias in the evaluation of the energy deposition. Possible effects of other experimental aspects have also been discussed. From this analysis, we determined an average fluorescence yield of 7.04+-0.24 ph/MeV at the above conditions.
Submitted to Astroparticle Physics
References in corpus (8)
- Spectral resolved Measurement of the Nitrogen Fluorescence Emissions in Air induced by Electrons
- Air fluorescence measurements in the spectral range 300-420 nm using a 28.5 GeV electron beam
- Energy Release in Air Showers
- Measurement of air and nitrogen fluorescence light yields induced by electron beam for UHECR experiments
- Absolute measurement of the nitrogen fluorescence yield in air between 300 and 430 nm
- Improved model for the analysis of air fluorescence induced by electrons
- The impact of the air-fluorescence yield on the reconstructed shower parameters of ultra-high energy cosmic rays
- Average value of available measurements of the absolute air-fluorescence yield
Cited by in corpus (8)
- The Pierre Auger Cosmic Ray Observatory
- Search for ultrarelativistic magnetic monopoles with the Pierre Auger Observatory
- An Estimate of the Spectral Intensity Expected from the Molecular Bremsstrahlung Radiation in Extensive Air Showers
- Molecular Bremsstrahlung Radiation at GHz Frequencies in Air
- Detectors for high-energy messengers from the Universe
- Relevance of the fluorescence radiation in VHE gamma-ray observations with the Cherenkov technique
- Coherent Suppression of Molecular Bremsstrahlung Radiation at GHz Frequencies in the Ionization Trail of Extensive Air Showers
- The Small Contribution of Molecular Bremsstrahlung Radiation to the Air-Fluorescence Yield of Cosmic Ray Shower Particles