Fig. 9
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Non-thermal radio continuum spectra for the spiral arm (SA), inter-arm (IA), and core regions (N5194c and N5195c). The flux densities at 619 MHz are only given as lower limits and are not included in the analysis. The solid lines are the best-fitting free–free absorption models (Eq. (10)). The dotted lines show the power-law fits for frequencies ≥ 144 MHz.
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