Monte Carlo Study of Electron and Positron Cosmic-Ray Propagation with the CALET Spectrum

  title={Monte Carlo Study of Electron and Positron Cosmic-Ray Propagation with the CALET Spectrum},
  author={Katsuaki Asano and Yoichi Asaoka and Yosui Akaike and Norita Kawanaka and Kazunori Kohri and H. M. Motz and Toshio Terasawa},
  journal={The Astrophysical Journal},
Focusing on the electron and positron spectrum measured with the Calorimetric Electron Telescope (CALET), which shows characteristic structures, we calculate the flux contributions of cosmic rays that have escaped from randomly appearing supernova remnants. We adopt a Monte Carlo method to take into account the stochastic nature of the appearance of nearby sources. We find that without a complicated energy dependence of the diffusion coefficient, simple power-law diffusion coefficients can… 



Stochastic cosmic ray sources and the TeV break in the all-electron spectrum

  • P. Mertsch
  • Physics
    Journal of Cosmology and Astroparticle Physics
  • 2018
Despite significant progress over more than 100 years, no accelerator has been unambiguously identified as the source of the locally measured flux of cosmic rays. High-energy electrons and positrons

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

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

Pulsars as the sources of high energy cosmic ray positrons

Recent results from the PAMELA satellite indicate the presence of a large flux of positrons (relative to electrons) in the cosmic ray spectrum between approximately 10 and 100 GeV. As annihilating

Multi-messenger constraints to the local emission of cosmic-ray electrons

The data on the inclusive flux of cosmic positrons and electrons (e++e−) have been recently collected from GeV to tens of TeV energies by several experiments with unprecedented precision. In

TeV cosmic ray electrons from millisecond pulsars

Recent γ-ray observations by Fermi Gamma-Ray Space Telescope suggest that the γ-ray millisecond pulsar (MSP) population is separated into two subclasses with respect to pair multiplicity. Here, we

Cosmic-Ray Electrons and Positrons from 1 to 100 GeV: Measurements with HEAT and Their Interpretation

Measurements of the energy spectra of negative electrons and positrons have been performed with the High-Energy Antimatter Telescope (HEAT) in two balloon flights—1994 May from Fort Sumner, NM, and

Explanation of the Knee-like Feature in the DAMPE Cosmic Energy Spectrum

The DArk Matter Particle Explorer, a space-based high precision cosmic-ray detector, has just reported the new measurement of the total electron plus positron energy spectrum up to 4.6 TeV. A notable

Constraining positron emission from pulsar populations with AMS-02 data

The cosmic-ray flux of positrons is measured with high precision by the space-borne particle spectrometer AMS-02. The hypothesis that pulsar wind nebulae (PWNe) can significantly contribute to the

The Energy Spectrum of Cosmic-Ray Electrons from 10 to 100 GeV Observed with a Highly Granulated Imaging Calorimeter

Cosmic-ray electrons have been observed in the energy range from 12 to ~100 GeV with a new balloon-borne payload, the Balloon-borne Electron Telescope with Scintillating Fibers (BETS). This is the

Origin of Cosmic Ray Electrons and Positrons

With experimental results of AMS on the spectra of cosmic ray (CR) e^−, e^+, e^− + e^+ and positron fraction, as well as new measurements of CR e^− + e^+ flux by HESS, one can better understand the