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Table 6

Minimum energy magnetic field as a function of γmin determined from the bright ridge observed at 43 GHz in the primary (LHS2) hotspot in the western lobe of Cygnus A.

γmin Bmin [mG]

1 0.80
10 0.61
100 0.46
1000 0.35
10 000 0.27

Notes. We assume a spectral slope of 0.72, as determined for the larger area fitted using multifrequency data.

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