Spatial structure of X-ray filaments in SN 1006

Abstract

The theory of Non-Linear Diffusive Shock Acceleration (NLDSA) predicts the formation of a precursor upstream of the shock, where accelerated particles diffuse and induce magnetic field amplification through streaming instability. The non detection of this precursor in X-rays in {\it Chandra} observations of the north-eastern region of SN 1006 (G329.6+14.6) led to impose an upper limit to the X-ray emission generated by accelerated electrons diffusing in this precursor, at an emissivity level of <1.5 per cent of the emission from the downstream region (Long et al. 2003). This has been used as an argument against Fermi acceleration at this shock. Here we calculate the spectrum and spatial distribution of accelerated particles in SN 1006 and show that Chandra results (including more recent data) are in perfect agreement with the predictions of NLDSA suggesting efficient particle acceleration and magnetic field amplification upstream of the shock by a factor ~10.

5 pages, 2 figures, accepted for publication in MNRAS Letter

References in corpus (12)

• Analytical solutions for energy spectra of electrons accelerated by nonrelativistic shock-waves in shell type supernova remnants
• Observational constraints on energetic particle diffusion in young SNRs: amplified magnetic field and maximum energy
• A kinetic approach to cosmic ray induced streaming instability at supernova shocks
• Non linear particle acceleration at non-relativistic shock waves in the presence of self-generated turbulence
• Confirmation of strong magnetic field amplification and nuclear cosmic ray acceleration in SN 1006
• Dynamical Feedback of Self-generated Magnetic Fields in Cosmic Ray Modified Shocks
• Gamma ray emission from SNR RX J1713.7-3946 and the origin of galactic cosmic rays
• The contribution of supernova remnants to the galactic cosmic ray spectrum
• The maximum momentum of particles accelerated at cosmic ray modified shocks
• The gas density around SN 1006
• The First X-Ray Proper-Motion Measurements of the Forward Shock in the Northeastern Limb of SN 1006
• Shock acceleration of electrons in the presence of synchrotron losses: I. test particle theory

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• Radio polarization maps of shell-type SNRs II. Sedov models with evolution of turbulent magnetic field
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• Hadronic gamma-ray images of Sedov supernova remnants
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