Fig. 11.

Relation between energy per particle (EP) and energy density of the magnetic field (ϵB) (left) and order (Bord/Btot) of the magnetic field (right) in the spiral (black) and the magnetic (red) arms of M 83. Larger symbols with solid line error bars refer to average values excluding I1 and S2 (see text for details). The smaller symbols with dot-dash error bars present individual regions.
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