The RAD2 spectral range (14-1
MHz) Wind/WAVES correspond
to 2-10 Ro à Type II bursts can
identify shock-driving CMEs in
the near-Sun IP medium.
For accelerating CMEs: shocks
form at large heliocentric
distances
For Halo CMEs: type II occurs
first because it takes some time for
the CME to be visible above the
occulting disk.
(CME time – when the CME first
appears in the C2 FOV)