Origin of the light cosmic ray component below the ankle

0546850 - FZÚ 2022 RIV US eng J - Journal Article
Supanitsky, A. D. … Total 3 authors
Origin of the light cosmic ray component below the ankle.
Physical Review D. Roč. 98, č. 10 (2018), č. článku 103016. ISSN 2470-0010. E-ISSN 2470-0029
Research Infrastructure: AUGER-CZ - 90038
Keywords : ultra-high energy cosmic rays * Pierre Auger Observatory
OECD category: Particles and field physics
Impact factor: 4.368, year: 2018
Method of publishing: Limited access
https://doi.org/10.1103/PhysRevD.98.103016

The origin and nature of the ultrahigh energy cosmic rays remains a mystery. However, considerable progress has been achieved in past years due to observations performed by the Pierre Auger Observatory and Telescope Array. Above 10(18) eV the observed energy spectrum presents two features: a hardening of the slope at similar to 10(18.6) eV, which is known as the ankle, and a suppression at similar to 10(19.6) eV. The composition inferred from the experimental data, interpreted by using the current high energy hadronic interaction models, seems to be light below the ankle, showing a trend to heavier nuclei for increasing values of the primary energy. Also, the anisotropy information is consistent with an extragalactic origin of this light component that would dominate the spectrum below the ankle.
Permanent Link: http://hdl.handle.net/11104/0323229