# Features in cosmic-ray lepton data unveil the properties of nearby cosmic accelerators

## TL;DR

This paper analyzes cosmic-ray lepton data features, attributing them to nearby pulsar wind nebulae and supernova remnants, and uses recent observational data to support this astrophysical interpretation.

## Contribution

It provides a comprehensive model explaining spectral features in cosmic-ray leptons using updated transport scenarios and recent AMS-02 and Voyager data.

## Key findings

- Positron spectrum drop-off at 300 GeV linked to a nearby PWN.
- High-energy electron peak shaped by local supernova remnants.
- Spectral softening at 1 TeV explained by a nearby supernova remnant.

## Abstract

We present a comprehensive discussion about the origin of the features in the leptonic component of the cosmic-ray spectrum. Working in the framework of a up-to-date CR transport scenario tuned on the most recent AMS-02 and Voyager data, we show that the prominent features recently found in the positron and in the all-electron spectra by several experiments are explained in a scenario in which pulsar wind nebulae (PWNe) are the dominant sources of the positron flux, and nearby supernova remnants shape the high-energy peak of the electron spectrum. In particular we argue that the drop-off in positron spectrum found by AMS-02 at $\sim 300$ GeV can be explained --- under different assumptions --- in terms of a prominent PWN that provides the bulk of the observed positrons in the $\sim 100$ GeV domain, on top of the contribution from a large number of older objects. Finally, we turn our attention to the spectral softening at $\sim 1$ TeV in the all-lepton spectrum, recently reported by several experiments, showing that it requires the presence of a nearby supernova remnant at its final stage.