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All-particle primary energy spectrum in the 3-200 PeV energy range

dc.contributor.authorGARYAKA, A. P.
dc.contributor.authorMARTIROSOV, R. M.
dc.contributor.authorTER-ANTONYAN, S. V.
dc.contributor.authorERLYKIN, A. D.
dc.contributor.authorNIKOLSKAYA, N. M.
hal.structure.identifierLaboratoire de Physique Théorique et Astroparticules [LPTA]
dc.contributor.authorGALLANT, Yves
dc.contributor.authorJONES, L. W.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorPROCUREUR, J.
dc.date.created2008-08-10
dc.date.issued2008-08-12
dc.identifier.issn0954-3899
dc.description.abstractEnWe present all-particle primary cosmic-ray energy spectrum in the 3-200 PeV energy range obtained by a multi-parametric event-by-event evaluation of the primary energy. The results are obtained on the basis of an expanded EAS dataset detected at mountain level (700 g/cm^2) by the GAMMA experiment. The energy evaluation method has been developed using the EAS simulation with the SIBYLL interaction model taking into account the response of GAMMA detectors and reconstruction uncertainties of EAS parameters. Nearly unbiased (<5%) energy estimations regardless of a primary nuclear mass with an accuracy of about 15-10% in the 3-200 PeV energy range respectively are attained. An irregularity ('bump') in the spectrum is observed at primary energies of ~74 PeV. This bump exceeds a smooth power-law fit to the data by about 4 standard deviations. Not rejecting stochastic nature of the bump completely, we examined the systematic uncertainties of our methods and conclude that they cannot be responsible for the observed feature.
dc.language.isoen
dc.publisherIOP Publishing
dc.title.enAll-particle primary energy spectrum in the 3-200 PeV energy range
dc.typeArticle de revue
dc.identifier.doi10.1088/0954-3899/35/11/115201
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Phénomènes cosmiques de haute energie [astro-ph.HE]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Phénomènes cosmiques de haute energie [astro-ph.HE]
dc.identifier.arxiv0808.1421
bordeaux.journalJournal of Physics G: Nuclear and Particle Physics
bordeaux.page115201
bordeaux.volume35
bordeaux.peerReviewedoui
hal.identifierhal-00402643
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00402643v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.jtitle=Journal%20of%20Physics%20G:%20Nuclear%20and%20Particle%20Physics&amp;rft.date=2008-08-12&amp;rft.volume=35&amp;rft.spage=115201&amp;rft.epage=115201&amp;rft.eissn=0954-3899&amp;rft.issn=0954-3899&amp;rft.au=GARYAKA,%20A.%20P.&amp;MARTIROSOV,%20R.%20M.&amp;TER-ANTONYAN,%20S.%20V.&amp;ERLYKIN,%20A.%20D.&amp;NIKOLSKAYA,%20N.%20M.&amp;rft.genre=article


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