Magnetic fields and cosmic rays in M 31 - II. Strength and distribution of the magnetic field components

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Fig. 6.

Map of the strength of the total magnetic field (in μG), determined from the total non-thermal intensities at λ20.5 cm at $1 \overset{'}{.} 5$ $1{{\overset{\prime}{.}}}5$ resolution, assuming global (but not local) equipartition between the energy densities of total magnetic fields and total CRs. Contour levels are at 7, 8, and 9 μG. The colour scale is the same as that in Fig. 5 (top panel).

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