Let us take the explosion site to be at point where . Other parameters are assumed to be , . The energy of the supernova explosion is . The contrasts in the distribution of X-ray surface brightness and spectral index are presented for the case of . Power index s is also constant over the surface of a nonspherical SNR because the shock is strong.
Component rises everywhere at the shock by the factor of .
No further turbulent amplification of the magnetic field is assumed. We are to expect the variation of and over the surface of a nonspherical SNR and downstream. The ISM nonuniformity does not affect the evolution of SNR at the previous free expansion stage. Angles and are shown in the figure. The darker colour represents a higher intensity.