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An upper limit to the proton fraction in cosmic rays above 10.sup.19./sup. eV from the Pierre Auger Observatory
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SYSNO ASEP 0093653 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title An upper limit to the proton fraction in cosmic rays above 1019 eV from the Pierre Auger Observatory Title Horní limit podílu fotonů v kosmickém záření nad 1019eV z observatoře Piera Augera Author(s) Abraham, J. (AR)
Aglietta, M. (IT)
Aguirre, C. (BO)
Boháčová, Martina (FZU-D) RID, ORCID
Hrabovský, Miroslav (FZU-D) RID, ORCID
Mandát, Dušan (FZU-D) RID, ORCID
Nosek, D. (CZ)
Nožka, Libor (FZU-D) RID, ORCID
Palatka, Miroslav (FZU-D) RID, ORCID, SAI
Pech, Miroslav (FZU-D) RID, ORCID
Prouza, Michael (FZU-D) RID, ORCID
Řídký, Jan (FZU-D) RID, ORCID
Schovánek, Petr (FZU-D) RID, ORCID
Šmída, Radomír (FZU-D) RID
Trávníček, Petr (FZU-D) RID, ORCIDSource Title Astroparticle Physics. - : Elsevier - ISSN 0927-6505
Roč. 27, - (2007), s. 155-168Number of pages 14 s. Language eng - English Country NL - Netherlands Keywords cosmic rays ; ultra-high energy photons ; exctensive air showers ; Pierre Auger Observatory Subject RIV BF - Elementary Particles and High Energy Physics R&D Projects LA 134 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LN00A006 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LC527 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z10100502 - FZU-D (2005-2011) Annotation An upper limit of 16% (at 95% c.l.) is derived for the photon fraction in cosmic rays with energies greater then 1019 eV, based on observations of the depth of shower maximum performed with the hybrid detector for Pierre Auger Observatory Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2008
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