Other
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd...9e...7r&link_type=abstract
Supernovae: One Millennium After SN1006, 26th meeting of the IAU, Joint Discussion 9, 17-18 August 2006, Prague, Czech Republic,
Other
Scientific paper
The remnant of SN 1006 has provided the most direct evidence yet for the acceleration of particles to energies above 100 TeV in strong shock waves, and hence for shell supernova remnants as the source of Galactic cosmic rays at least up to the spectral feature at around 3000 TeV known as the "knee." That evidence is the largely featureless X-ray spectrum of SN 1006 and its interpretation as synchrotron radiation. While several other Galactic shell supernova remnants were later found to show evidence of X-ray synchrotron emission, SN 1006 remains the clearest example and the most amenable to further tests and study of the diffusive shock acceleration process. I shall review briefly the 25-year history of the proposal, confirmation, and detailed modeling of synchrotron X-rays from shell supernova remnants, and shall describe the current status of observations and theory. High-resolution X-ray observations with Chandra show that synchrotron filaments are extremely thin, perhaps due to amplification of the ambient magnetic field by orders of magnitude in the shock wave. If such amplification actually occurs here and in similar strong shock waves, astrophysical modeling of many classes of source will be impacted.
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