Radio Evolution of Supernova Remnants Including Non-linear Particle Acceleration: Insights from Hydrodynamic Simulations

Abstract

We present a model for the radio evolution of supernova remnants (SNRs) obtained by using three-dimensional (3D) hydrodynamic simulations, coupled with nonlinear kinetic theory of cosmic ray (CR) acceleration in SNRs. We model the radio evolution of SNRs on a global level, by performing simulations for wide range of the relevant physical parameters, such as the ambient density, the supernova (SN) explosion energy, the acceleration efficiency and the magnetic field amplification (MFA) efficiency. We attribute the observed spread of radio surface brightnesses for corresponding SNR diameters to the spread of these parameters. In addition to our simulations of type Ia SNRs, we also considered SNR radio evolution in denser, nonuniform circumstellar environment, modified by the progenitor star wind. These simulations start with the mass of the ejecta substantially higher than in the case of a type Ia SN and presumably lower shock speed. The magnetic field is understandably seen as very important for the radio evolution of SNRs. In terms of MFA, we include both resonant and non-resonant modes in our large scale simulations, by implementing models obtained from first-principles, particle-in-cell (PIC) simulations and non-linear magnetohydrodynamical (MHD) simulations. We test the quality and reliability of our models on a sample consisting of Galactic and extragalactic SNRs. Our simulations give $\Sigma -D$ slopes between -4 and -6 for the full Sedov regime. Recent empirical slopes obtained for the Galactic samples are around -5, while for the extragalactic samples are around -4.

17 pages, 6 figures, 1 table, corrected typos, added new references and conclusions, 2 new coauthors, accepted for publication in ApJ

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Cited by in corpus (14)

• A Statistical Analysis of Galactic Radio Supernova Remnants
• Mysterious Odd Radio Circle near the Large Magellanic Cloud -- An Intergalactic Supernova Remnant?
• The ASKAP-EMU Early Science Project:Radio Continuum Survey of the Small Magellanic Cloud
• Non-linear diffusive shock acceleration: A recipe for injection of electrons
• New ASKAP Radio Supernova Remnants and Candidates in the Large Magellanic Cloud
• Radio Emission from Interstellar Shocks: Young Type Ia Supernova Remnants and the Case of N 103B in the Large Magellanic Cloud
• ASKAP$-$EMU Discovery of "Raspberry": a new Galactic SNR Candidate G308.73+1.38
• Search for and Identification of Young Compact Galactic Supernova Remnants Using THOR
• Odd Radio Circles as supernovae remnants in the intragroup medium
• Particle acceleration in interstellar shocks
• ATCA Study of Small Magellanic Cloud Supernova Remnant 1E 0102.2-7219
• Supernova remnants in clumpy medium: A model of hydrodynamic and radio synchrotron evolution
• Non-linear Diffusive Shock Acceleration of Cosmic Rays -- Quasi-thermal and Non-thermal Particle Distributions
• Efficiencies of Magnetic-Field Amplification and Electron Acceleration in Young Supernova Remnants: Global Averages and Kepler's Supernova Remnant