Type IV radio  bursts:
Nonthermal electrons
trapped in CME cores
or substructures
produce plasma or
synchrotron emission
(Boischot, 1957; Stewart, 1985;
Gopalswamy & Kundu 1990;
Bastian et al, 2001)
Moving structure from type IV
 The radio and white light
structures had a speed of
~ 525 km/s. (Gopalswamy &
Kundu, 1989)