Nature of ultra high energy cosmic rays on the basis of the recent results from experiment AUGER
Sources and chemical (mass) composition of the ultra high energy cosmic rays (UHECRs) are still unknown. Once more, recent results of the experimental measurements of the energy spectrum and chemical composition of UHECRs presented by AUGER, HIRES and TA are contradictory: HIRES and TA data are cons...
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| Format: | Article |
| Language: | English |
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National Aviation University
2011-10-01
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| Series: | Вісник Астрономічної школи |
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| Online Access: | http://astro.nau.edu.ua/issues/2011_V.7_Iss.1/Gnatyk.html |
| _version_ | 1819102209723334656 |
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| author | R. B. Gnatyk |
| author_facet | R. B. Gnatyk |
| author_sort | R. B. Gnatyk |
| collection | DOAJ |
| description | Sources and chemical (mass) composition of the ultra high energy cosmic rays (UHECRs) are still unknown. Once more, recent results of the experimental measurements of the energy spectrum and chemical composition of UHECRs presented by AUGER, HIRES and TA are contradictory: HIRES and TA data are consistent with a proton-dominated flux of UHECRs for the all energy diapason, while AUGER data suggest increasing contribution of heavy nuclei at highest energy. In this paper the energy dependence of the depth of the shower maximum development X_max for UHECR flux composed of mixture of protons and irons is investigated. It is shown, that AUGER 2011 data about the spectrum and chemical composition can be explained as a sum of fluxes of light (proton) and heavy (iron) components with domination of proton component (maximum contribution of iron component about 30%). |
| first_indexed | 2024-12-22T01:30:56Z |
| format | Article |
| id | doaj.art-f658a0b14d034af186636b8bf412acdb |
| institution | Directory Open Access Journal |
| issn | 1607-2855 2411-6602 |
| language | English |
| last_indexed | 2024-12-22T01:30:56Z |
| publishDate | 2011-10-01 |
| publisher | National Aviation University |
| record_format | Article |
| series | Вісник Астрономічної школи |
| spelling | doaj.art-f658a0b14d034af186636b8bf412acdb2022-12-21T18:43:29ZengNational Aviation UniversityВісник Астрономічної школи1607-28552411-66022011-10-0171242710.18372/2411-6602.07.10242411-6602.07.1024Nature of ultra high energy cosmic rays on the basis of the recent results from experiment AUGERR. B. Gnatyk0Kyiv Shevchenko National University, UkraineSources and chemical (mass) composition of the ultra high energy cosmic rays (UHECRs) are still unknown. Once more, recent results of the experimental measurements of the energy spectrum and chemical composition of UHECRs presented by AUGER, HIRES and TA are contradictory: HIRES and TA data are consistent with a proton-dominated flux of UHECRs for the all energy diapason, while AUGER data suggest increasing contribution of heavy nuclei at highest energy. In this paper the energy dependence of the depth of the shower maximum development X_max for UHECR flux composed of mixture of protons and irons is investigated. It is shown, that AUGER 2011 data about the spectrum and chemical composition can be explained as a sum of fluxes of light (proton) and heavy (iron) components with domination of proton component (maximum contribution of iron component about 30%).http://astro.nau.edu.ua/issues/2011_V.7_Iss.1/Gnatyk.htmlultra high energy cosmic raysexperimental measurements of the energy spectrumchemical composition and nature of cosmic rays |
| spellingShingle | R. B. Gnatyk Nature of ultra high energy cosmic rays on the basis of the recent results from experiment AUGER Вісник Астрономічної школи ultra high energy cosmic rays experimental measurements of the energy spectrum chemical composition and nature of cosmic rays |
| title | Nature of ultra high energy cosmic rays on the basis of the recent results from experiment AUGER |
| title_full | Nature of ultra high energy cosmic rays on the basis of the recent results from experiment AUGER |
| title_fullStr | Nature of ultra high energy cosmic rays on the basis of the recent results from experiment AUGER |
| title_full_unstemmed | Nature of ultra high energy cosmic rays on the basis of the recent results from experiment AUGER |
| title_short | Nature of ultra high energy cosmic rays on the basis of the recent results from experiment AUGER |
| title_sort | nature of ultra high energy cosmic rays on the basis of the recent results from experiment auger |
| topic | ultra high energy cosmic rays experimental measurements of the energy spectrum chemical composition and nature of cosmic rays |
| url | http://astro.nau.edu.ua/issues/2011_V.7_Iss.1/Gnatyk.html |
| work_keys_str_mv | AT rbgnatyk natureofultrahighenergycosmicraysonthebasisoftherecentresultsfromexperimentauger |