Dependence of the gamma-ray emission from SN 1006 on the astronomical parameters

We use nonlinear kinetic theory to study the remnant dynamics and the particle acceleration as well as the properties of the nonthermal emission from the supernova remnant SN 1006. The known range of astronomical parameters is examined to determine whether it encompasses the existing synchrotron emission data. Given the present-day spatial extent and expansion rate of the object, it is shown that the hadronic gammaray flux is very sensitive to the ambient gas density N-H and that the existing HESS upper limit requires N-H < 0.1 cm(-3). The strength of the amplified magnetic field downstream of the shock is about 150 mu G.