Spectra of magnetic fluctuations and relativistic particles produced by a nonresonant wave instability in supernova remnant shocks

Abstract

We model strong forward shocks in young supernova remnants with efficient particle acceleration where a nonresonant instability driven by the cosmic ray current amplifies magnetic turbulence in the shock precursor. Particle injection, magnetic field amplification (MFA) and the nonlinear feedback of particles and fields on the bulk flow are derived consistently. The shock structure depends critically on the efficiency of turbulence cascading. If cascading is suppressed, MFA is strong, the shock precursor is stratified, and the turbulence spectrum contains several discrete peaks. These peaks, as well as the amount of MFA, should influence synchrotron X-rays, allowing observational tests of cascading and other assumptions intrinsic to the nonlinear model of nonresonant wave growth.

3 figures, 5 pages. Accepted for publication in ApJL

References in corpus (10)

• Non-linear Study of Bell's Cosmic Ray Current-driven Instability
• Non linear particle acceleration at non-relativistic shock waves in the presence of self-generated turbulence
• Diffusive Shock Acceleration with Magnetic Amplification by Non-resonant Streaming Instability in SNRs
• Nonlinear Diffusive Shock Acceleration with Magnetic Field Amplification
• Modeling Bell's Non-resonant Cosmic Ray Instability
• Dots, clumps and filaments: the intermittent images of synchrotron emission in random magnetic fields of young supernova remnants
• Turbulence Dissipation and Particle Injection in Non-Linear Diffusive Shock Acceleration with Magnetic Field Amplification
• Turbulence and particle acceleration in collisionless supernovae remnant shocks: I-Anisotropic spectra solutions
• Dynamics of Mesoscale Magnetic Field in Diffusive Shock Acceleration
• Multiwavelength Signatures of Cosmic Ray Acceleration by Young Supernova Remnants

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