An upper limit to the photon fraction in cosmic rays above 1019 eV from the Pierre Auger
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F07%3A00005008" target="_blank" >RIV/61989592:15310/07:00005008 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
An upper limit to the photon fraction in cosmic rays above 1019 eV from the Pierre Auger
Original language description
An upper limit of 16% (at 95% c.l.) is derived for the photon fraction in cosmic rays with energies greater than 1019 eV, based on observations of the depth of shower maximum performed with the hybrid detector of the Pierre Auger Observatory. This is thefirst such limit on photons obtained by observing the fluorescence light profile of air showers. This upper limit confirms and improves on previous results from the Haverah Park and AGASA surface arrays. Additional data recorded with the Auger surface detectors for a subset of the event sample support the conclusion that a photon origin of the observed events is not favored.
Czech name
Horní limit pro podíl fotonů u kosmických paprsků nad 1019 eV podle observatoře Pierra Augera.
Czech description
Na základě pozorování max. šířky spršky paprsků hybridním detektorem observatoře Pierra Augera je odvozen horní limit podílu fotonů v případě kosmických paprsků s energiemi většími než 1019 eV. Jde o první limit počtu fotonů, získaný pozorováním profilufluorescence vzdušné spršky.####
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BH - Optics, masers and lasers
OECD FORD branch
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Result continuities
Project
<a href="/en/project/1M06002" target="_blank" >1M06002: Optical structures, detection systems and relevant technologies for low photon number applications</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2007
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astroparticle Physics
ISSN
0927-6505
e-ISSN
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Volume of the periodical
27
Issue of the periodical within the volume
2-3
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
14
Pages from-to
155-168
UT code for WoS article
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EID of the result in the Scopus database
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