Measurement of the energy spectrum of cosmic rays above 10^18 eV using the Pierre Auger Observatory

Abraham, J.; ...; Antičić, Tome; ...; Kadija, Krešo; ...; Mićanović, Saša; ...; Šuša, Tatjana; ...; Ziolkowski, M.

doi:Doi:10.1016/j.physletb.2010.02.013

Pregled bibliografske jedinice broj: 437924

Measurement of the energy spectrum of cosmic rays above 10^18 eV using the Pierre Auger Observatory

Abraham, J.; ...; Antičić, Tome; ...; Kadija, Krešo; ...; Mićanović, Saša; ...; Šuša, Tatjana; ...; Ziolkowski, M.

Measurement of the energy spectrum of cosmic rays above 10^18 eV using the Pierre Auger Observatory // Physics letters. B, 685 (2010), 4/5; 239-246 doi::10.1016/j.physletb.2010.02.013 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 437924 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Measurement of the energy spectrum of cosmic rays above 10^18 eV using the Pierre Auger Observatory

Autori
Abraham, J. ; ... ; Antičić, Tome ; ... ; Kadija, Krešo ; ... ; Mićanović, Saša ; ... ; Šuša, Tatjana ; ... ; Ziolkowski, M.

Izvornik
Physics letters. B (0370-2693) 685 (2010), 4/5; 239-246

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Pierre Auger Observatory; cosmic rays; energy spectrum

Sažetak
We report a measurement of the flux of cosmic rays with unprecedented precision and statistics using the Pierre Auger Observatory. Based on fluorescence observations in coincidence with at least one surface detector we derive a spectrum for energies above 10^18 eV. We also update the previously published energy spectrum obtained with the surface detector array. The two spectra are combined addressing the systematic uncertainties and, in particular, the influence of the energy resolution on the spectral shape. The spectrum can be described by a broken power law E^{; ; ; −γ}; ; ; with index γ = 3.3 below the ankle which is measured at log10 (Eankle /eV) = 18.6. Above the ankle the spectrum is described by a power law with index 2.6 followed by a flux suppression, above about log10 (E/eV) = 19.5, detected with high statistical significance.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
Pierre Auger Collaboration - Observatorio Pierre Auger

POVEZANOST RADA

Projekti:
098-0982887-2878 - Eksperimentalna fizika na LHC energijama (Kadija, Krešo, MZOS ) ( CroRIS)

Ustanove:
Institut "Ruđer Bošković", Zagreb

Profili:

Saša Mićanović (autor)