Abstract
Analysis of seven near-limb coronal mass ejections (CMEs) has shown that at distances R<1.4R from the center of the Sun CMEs according to their formation can be divided into two types: type 1 CMEs and type 2 CMEs. In the case of type 1 CMEs, the frontal structure (FS) is formed by processes occurring in FS itself, which is the outer shell of the magnetic flux rope. As for type 2 CMEs, EP-CME, internal arched structures erupt, explosively expand, capture and accelerate the more distant arched structures, which merge to form the frontal structure of the type 2 CMEs.
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