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The properties of the Galactic supernova remnant SN 1006 are theoreticallyreanalysed. Nonlinear kinetic theory is used to determine the accelerationefficiency of cosmic rays (CRs) in the supernova remnant SN 1006. The knownrange of astronomical parameters and the existing measurements of nonthermalemission are examined in order to define the values of the relevant physicalparameters which determine the CR acceleration efficiency. It is shown that theparameter values -- proton injection rate, electron to proton ratio anddownstream magnetic field strength -- are determined with the appropriateaccuracy. In particular also the observed azimuthal variations in the gamma-raymorphology agree with the theoretical expectation. These parameter values,together with the reduction of the gamma-ray flux relative to a sphericallysymmetric acceleration geometry, allow a good fit to the existing data,including the recently detected TeV emission by H.E.S.S. SN 1006 represents thefirst example where a high efficiency of nuclear CR production, required forthe Galactic CR sources, is consistently established.

Cosmic ray acceleration parameters from multi-wavelength observations. The case of SN 1006