Fig. A.1.

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LOFAR LBA image of the Perseus cluster tapered to 68″ and with compact sources subtracted. The red areas indicate regions that were excluded due to the presence of contaminating sources, for constructing the radial radio surface brightness profile. The yellow circle (154″ radius, 58 kpc) indicates the region that is affected by the presence of 3C 84. The double-exponential fit for radio surface brightness profile was performed on the data between the yellow circle and the dashed teal circle at 650 kpc radius.
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