Cosmic ray antiprotons and the Single Source model

TL;DR

This paper examines cosmic ray antiprotons in relation to the Single Source model, suggesting that recent AMS-02 observations are consistent with predictions of a local recent supernova as a source of antiprotons.

Contribution

It revisits the Single Source model in light of new AMS-02 data, showing consistency between predictions and observations of antiproton-to-proton ratios.

Findings

Preliminary AMS-02 data align with the Single Source model predictions.

No current inconsistency between observed and predicted antiproton ratios.

Supports the hypothesis of a local recent supernova as a source.

Abstract

In view of the fact that the AMS-02 instrument has recently been used to make preliminary observations of the ratio of the antiprotons (\-{P}) to protons (P) in the primary cosmic radiation we have returned to our idea of signatures of a local recent supernova. We find that at the present level of accuracy there is no inconsistency between our predictions for the \-{P}/P ratio to some hundreds of GeV using the preliminary observations.