Interpretation of AMS-02 positrons data with secondary production and pulsars

Abstract

We establish a theoretical model, which includes the flux from the secondary production and pulsar wind nebulae, to analyze recent positron data derived from AMS-02. We model the primary positron contribution through the sum of an average flux from distant sources and flux from the local pulsars in the ATNF catalog, while the secondary production comes from interactions of primary cosmic rays in the interstellar medium. Under certain assumptions, we include and study the most important properties of primary positrons from pulsar wind nebula in the ATNF catalog. We find consistency between theoretical model and the AMS-02 data for various analysis. The result suggests the existence and feasibility of a self-consistent interpretation for AMS-02 positron data in the field of astroparticle contributions, where data below 10 GeV are mostly produced by the secondary production, while above by pulsar wind nebulae.