Limits on the Lorentz invariance violation from UHECR astrophysics

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F18%3A00547185" target="_blank" >RIV/68378271:_____/18:00547185 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.3847/1538-4357/aa9f2c" target="_blank" >https://doi.org/10.3847/1538-4357/aa9f2c</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/1538-4357/aa9f2c" target="_blank" >10.3847/1538-4357/aa9f2c</a>

Result language
angličtina
Original language name
Limits on the Lorentz invariance violation from UHECR astrophysics
Original language description
In this paper, the Lorentz invariance violation (LIV) is introduced in the calculations of photon propagation in the universe. LIV is considered in the photon sector, and the mean-free path of the gamma gamma -> e(+)e(-) interaction is calculated. The corresponding photon horizon, including LIV effects, is used to predict major changes in the propagation of photons with energy above 10(18) eV. The flux of GZK photons on Earth, considering LIV, is calculated for several source models of ultra-high-energy cosmic rays (UHECRs). The predicted flux of GZK gamma-rays is compared to the new upper limits on the photon flux obtained by the Pierre Auger Observatory in order to impose upper limits on the LIV coefficients of order n = 0, 1, and 2. The limits on the LIV coefficients derived here are more realistic than previous works and in some cases more restrictive.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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