The AMS Collaboration has recently released data on cosmic ray (CR) leptons
and hadrons that can shed light on two exciting problems in CR physics: on one
side, the origin of the rise of the CR positron fraction above ~10 GeV of
energy, on the other side, the nature of the spectral features observed in CR
protons and helium at TeV energies. Concerning heavier nuclei, The ATIC-2
experiment has recently reported an puzzling spectral upturn at energy ~50 GeV
per nucleon in several primary/primary ratios involving Iron, such as the O/Fe
or C/Fe ratio. In this work, the AMS data are described using a two-component
scenario, where the total CR flux is provided by a mixture of fluxes
accelerated by sources with different properties. Within this picture, the role
of secondary CR production inside nearby supernova remnants is discussed. In
particular, we present the predictions of our model for the C/Fe and O/Fe
ratios, in connection with the spectral anomalies found by the ATIC-2
experiment.Comment: 8 pages, 2 figures - Proceeding of the 34th International Cosmic Ray
Conference. PoS(2015) 55