a: MDI magnetogram showing the magnetic polarities of the active region NOAA 10965 on May 19, 2007 with susperposed iso-intensity contours at half maximum of the stationary type IV continuum at 432 MHz. b: superposition of radio sources seen in Stokes parameter I on the magnetic field configuration inferred by the PFSS model of Schrijver & De Rosa (2003). The contours of equal brightness temperature at 50% of the maximum represent different frequencies of the NRH.
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