Comment Section

A shock-only event without the signature of CME ejectum (J. Zhang).
- solar source (2011/10/27 12 UT CME, originated from N12E06, if confirmed) is close to the central meridian, indicating the ejectum was deflected away from the Sun-Earth line by the presence of low-latitude coronal hole.

Image Data

A combination of SWEPAM and MAG data from the ACE Satellite:

Error creating thumbnail: File missing

The blue lines are an approximation of the CME cloud and the red line denotes the shock.