Energy evolution of cosmic-ray mass and intensity measured by the Pierre Auger Observatory

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00640450" target="_blank" >RIV/68378271:_____/25:00640450 - isvavai.cz</a>
Alternative codes found
RIV/61989592:15310/25:73634827
Result on the web
<a href="https://www.epj-conferences.org/articles/epjconf/pdf/2025/04/epjconf_ricap2024_07002.pdf" target="_blank" >https://www.epj-conferences.org/articles/epjconf/pdf/2025/04/epjconf_ricap2024_07002.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/epjconf/202531907002" target="_blank" >10.1051/epjconf/202531907002</a>

Result language
angličtina
Original language name
Energy evolution of cosmic-ray mass and intensity measured by the Pierre Auger Observatory
Original language description
The Pierre Auger Observatory has conducted measurements of the energy spectrum and mass composition of cosmic rays using different methods. Utilizing both surface and fluorescence detectors (SD and FD), the Observatory provides unprecedented precision in understanding these particles. While primarily designed to measure ultra-high energy cosmic rays, the FD’s highelevation telescopes and the dense arrays of SD stations enable observations down to 6 PeV and 60 PeV, respectively. To determine the depth of shower maximum, a critical parameter for identifying primary particle types, both direct longitudinal profile measurements from the FD and indirect signal analyses from the SD are employed. An energy evolution of the mass of primary particles, as well as of the spectral index of the flux intensity, are observed and characterized by features described in the presented work. The measurements benefit from the joint operation of the FD and SD, delivering a systematic uncertainty of 14% in energy determination and an accumulated exposure reaching 80 000 km2 sr yr at the highest energies.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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