Structure in the cosmic ray spectrum: an update

An update is given of the evidence from extensive air showers relating to o ur claim that there is 'structure' in the energy spectrum of high-energy co smic rays. The structure: is explained, in our model, in terms of there hav ing been a recent nearby supernova, the remnant of which has accelerated co smic ray nuclei, with rather sharp energy cut-offs at similar to 3 x 10(6) GeV for oxygen nuclei and similar to 1 x 10(7) GeV for iron nuclei. The add ition of the later data on the shower size spectra which amounts to a 250% increase and includes that of Cherenkov radiation, hadrons and muons, is co nsidered by us to enhance the probability of our model being correct, altho ugh the case is still not 'watertight'.