Fig. 18

Degree of field order q, the ratio of the ordered field strength in the sky plane to the isotropic turbulent field strength, derived from the fractional polarization of the nonthermal intensity of IC 342 at λ6.2 cm at 25′′ resolution and assuming equipartition between the energy densities of cosmic rays and magnetic field. q is computed only at points where the total nonthermal intensities at λ6.2 cm are larger than 10 times the rms noise.
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