Cosmic ray electron and positron spectra at TeV energies

TL;DR

This paper reviews recent high-energy cosmic ray electron and positron measurements up to 1 TeV, discussing their interpretation, stochastic fluctuations, and models explaining the positron excess.

Contribution

It provides a comprehensive review of TeV cosmic ray electron and positron spectra, highlighting new observational data and discussing models for the positron excess.

Findings

Recent measurements extend to ~1 TeV for electrons and positrons.

Analysis of stochastic fluctuations in the spectra.

Discussion of secondary models for positron excess.

Abstract

Observations of cosmic ray electrons have made great strides in the last decade and direct observations of the all-electron flux as well as separate electron and positron spectra are now available up to ~ 1 TeV. In this invited contribution to the 2022 edition of the Rencontres de Moriond on Very High Energy Phenomena in the Universe, we review the data on cosmic ray electron and positron spectra at TeV energies and offer general comments on their interpretation. Subsequently, we focus on the study of the stochastic fluctuations and a secondary model for the positron excess.