The analysis of multi-wavelength, high-cadence images obtained from the NRH shows the on-disk signatures of the initiation of the CME at low-coronal heights, <=2 Rs The formation of the CME inferred from the radio data indicates a nearly developed halo at the low corona.

(Maia et al., Solar Physics, 204, Issue 1/2, p. 197-212, 2001)