Galactic magnetic turbulence from radio data

► Galactic magnetic turbulence are traced by the angular power spectrum of radio maps. ► The turbulence power spectrum is found to be flatter than 3D Kolmogorov. ► The turbulent halo scale is found to be thin, smaller than (of order of) 1 kpc. ► Results point towards non-conventional cosmic-ray models with convective winds. ► Alternatively, results can suggest non-trivial mechanism for transferring turbulent energy from large to small scales.