SPECTRA OF MAGNETIC FLUCTUATIONS AND RELATIVISTIC PARTICLES PRODUCED BY A NONRESONANT WAVE INSTABILITY IN SUPERNOVA REMNANT SHOCKS

Journal Article · Sun Sep 20 04:00:00 EDT 2009 · Astrophysical Journal (Online)

DOI:https://doi.org/10.1088/0004-637X/703/1/L29· OSTI ID:21371989

Vladimirov, Andrey E; Ellison, Donald C ^[1]

---

1. North Carolina State University, Department of Physics, Raleigh, NC 27695-8202 (United States)

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.

• OSTI ID: 21371989
• Journal Information: Astrophysical Journal (Online), Journal Name: Astrophysical Journal (Online) Journal Issue: 1 Vol. 703; ISSN 1538-4357
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
79 ASTRONOMY AND ASTROPHYSICS
ACCELERATION
COSMIC RADIATION
COSMIC RADIO SOURCES
ENERGY RANGE
INSTABILITY
IONIZING RADIATIONS
MAGNETIC FIELDS
NONLINEAR PROBLEMS
RADIATIONS
RELATIVISTIC RANGE
SHOCK WAVES
SPECTRA
SUPERNOVA REMNANTS
TURBULENCE