Julián Candia and Esteban Roulet JCAP09(2003)005 doi:10.1088/1475-7516/2003/09/005
Rigidity dependent knee and cosmic ray induced high energy neutrino fluxes
Julián Candia1 and Esteban Roulet2
Show affiliations Scenarios in which the knee of the cosmic ray spectrum depends on the particle rigidities usually predict that the cosmic ray composition becomes heavier above the knee and have associated a change in the spectral slope of each individual nuclear component which is steeper than the change (Δα
0.3) observed in the total spectrum. We show that this implies that the very high energy (Eν>1014 eV) diffuse neutrino fluxes produced by cosmic rays hitting the atmosphere or colliding with the interstellar medium in the Galaxy will be significantly suppressed, making their detection harder but also reducing the background for the search for other (more challenging) astrophysical neutrino sources.
- Keywords
- PACS
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96.50.sb Composition, energy spectra and interactions
- Subjects
- Dates
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Issue 09 (September 2003)
Received 1 July 2003, accepted for publication 25 August 2003, in final form 13 July 2003
Published 16 September 2003
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Rigidity dependent knee and cosmic ray induced high energy neutrino fluxes
Julián Candia and Esteban Roulet JCAP09(2003)005
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