Fig. 7

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Radial halo surface-brightness profile at 144 MHz. Data points show the surface brightness extracted in 26 kpc annuli centered on NGC 1275. The profile is well fit by a double exponential model (solid black line), with the blue dashed lines showing the individual exponential components. The inner region below 40 kpc, which is contaminated by 3C 84, is not shown.
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