Cosmic Ray Origins in Supernova Blast Waves

Abstract

We extend the self-similar solution derived by Chevalier for a Sedov blast wave accelerating cosmic rays (CR) to show that the Galactic CR population can be divided into: (A) CR with energies above ~200GeV released upstream during CR acceleration by supernova remnants (SNR), (B) CR advected into the interior of the SNR during expansion and then released from the SNR at the end of its life to provide the Galactic CR component below ~200GeV. The intersection between the two populations may correspond to a measured change in the Galactic CR spectral index at this energy.

arXiv comment12 pages, 8 figures, accepted for publication in Monthly Notices of the Royal Astronomical Society

References in corpus (17)

• PAMELA Measurements of Cosmic-ray Proton and Helium Spectra
• On the magnetic fields and particle acceleration in Cas A
• Discrepant hardening observed in cosmic-ray elemental spectra
• Magnetic Field Amplification in Tycho and other Shell-type Supernova Remnants
• Cosmic ray acceleration and escape from supernova remnants
• Spectral breaks as a signature of cosmic ray induced turbulence in the Galaxy
• Giant Magnetized Outflows from the Centre of the Milky Way
• Origin of the Cosmic Ray Spectral Hardening
• Diffusive Shock Acceleration with Magnetic Amplification by Non-resonant Streaming Instability in SNRs
• Confirmation of strong magnetic field amplification and nuclear cosmic ray acceleration in SN 1006
• Spectrum of cosmic rays, produced in supernova remnants
• High-energy particle acceleration at the radio-lobe shock of Centaurus A
• Spectra of Cosmic Ray Protons and Helium Produced in Supernova Remnants
• The theory of synchrotron emission from supernova remnants
• Cosmic ray acceleration in young supernova remnants
• Cosmic ray acceleration at oblique shocks
• The Impact of Efficient Particle Acceleration on the Evolution of Supernova Remnants in the Sedov-Taylor Phase

Cited by in corpus (19)

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• Space- and Ground-Based Gamma-Ray Astrophysics
• Cosmic Ray Acceleration by Relativistic Shocks: Limits and Estimates
• Explanation of the knee-like feature in the DAMPE cosmic $e^{-}+e^{+}$ energy spectrum
• Spectral Intensities of Antiprotons and the lifetime of Cosmic Rays in the Galaxy
• Shock-accelerated cosmic rays and streaming instability in the adaptive mesh refinement code Ramses
• Efficient cold outflows driven by cosmic rays in high redshift galaxies and their global effects on the IGM
• The effect of cosmic-ray acceleration on supernova blast wave dynamics
• Revealing a peculiar supernova remnant G106.3+2.7 as a petaelectronvolt proton accelerator with X-ray observations
• Lack of thermal energy in superbubbles: hint of cosmic rays?
• The LHAASO PeVatron bright sky: what we learned
• The unreasonable weakness of r-process cosmic rays in the neutron-star-merger nucleosynthesis scenario
• Cosmic rays from massive star clusters : A close look at Westerlund 1
• Modeling the gamma-ray emission in the Galactic Center with a fading cosmic-ray accelerator
• Simulating TeV gamma-ray morphologies of shell-type supernova remnants
• High-energy cosmic rays from compact galactic star clusters: particle fluxes and anisotropy
• Transport parameters from AMS-02 F/Si data and fluorine source abundance
• Studying the link between radio galaxies and AGN fuelling with relativistic hydrodynamic simulations of flickering jets
• Supernova Remnant-Cosmic Ray connection: a modern view