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Measurement of the cosmic ray composition at the knee with the SPASE-2/AMANDA-B10 detectors
Vise andre og tillknytning
2004 (engelsk)Inngår i: Astroparticle physics, ISSN 0927-6505, E-ISSN 1873-2852, Vol. 21, nr 6, s. 565-581Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The mass composition of high-energy cosmic rays at energies above 1015 eV can provide crucial information for the understanding of their origin. Air showers were measured simultaneously with the SPASE-2 air shower array and the AMANDA-B10 Cherenkov telescope at the South Pole. This combination has the advantage to sample almost all high-energy shower muons and is thus a new approach to the determination of the cosmic ray composition. The change in the cosmic ray mass composition was measured versus existing data from direct measurements at low energies. Our data show an increase of the mean log atomic mass 〈lnA〉 by about 0.8 between 500 TeV and 5 PeV. This trend of an increasing mass through the "knee" region is robust against a variety of systematic effects. © 2004 Elsevier B.V. All rights reserved.

sted, utgiver, år, opplag, sider
Elsevier, 2004. Vol. 21, nr 6, s. 565-581
Emneord [en]
Cosmic Rays, Mass composition, Neutrino astronomy
HSV kategori
Forskningsprogram
Fysik, Astropartikelfysik
Identifikatorer
URN: urn:nbn:se:lnu:diva-28444DOI: 10.1016/j.astropartphys.2004.04.007OAI: oai:DiVA.org:lnu-28444DiVA, id: diva2:643445
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Source: Scopus

Tilgjengelig fra: 2013-08-27 Laget: 2013-08-26 Sist oppdatert: 2017-12-06bibliografisk kontrollert

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Carius, StaffanPohl, A. C.

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