SN 1006 AND COSMIC-RAY ACCELERATION

SN 1006 was shown by ASCA to be of a dual nature, with nonthermal emissioncoming from the bright limbs and fainter thermal emission coming from the centerand the other sides. This is the best example we have of shock acceleration ofcosmicray electrons to energies approaching the knee in the cosmicrayspectrum. We have analysed the XMMNewton pointings on SN 1006, and havemeasured for the first time the radial and azimuthal variations of thesynchrotron emission. We propose to map the whole remnant with deeper exposures,allowing spectral analysis at a radial scale of 15 (about the XMM HEW) in thebright limbs and at a spatial scale of 2. in the interior. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]