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A Catalog of Halo Coronal Mass Ejections from SOHO

Howard, R. A.; Gopalswamy, N.; Michalek, G. +4 more

Coronal mass ejections (CMEs) that appear to surround the occulting disk of the observing coronagraph are known as halo CMEs. Halos constitute a subset of energetic CMEs that have important heliospheric consequences. Here we describe an on-line catalog that contains all the halo CMEs that were identified in the images obtained by the Solar and Hel…

Relationship between CME Parameters and Large-Scale Structure of Solar Magnetic Fields

Ivanov, E. V.; Fainshtein, V. G.

In this work, we explore how the parameters of coronal mass ejections (CME) associated with eruptive prominences (EP) depend on their position relative to the coronal streamer belt (CSB) and coronal streamer chains (CSCs). We show that the CMEs whose axes are close to CSB propagate at lower mean speed than the CMEs observed in the vicinity of CSCs…

Determining the Full Halo Coronal Mass Ejection Characteristics

Fainshtein, V. G.

Observing halo coronal mass ejections (HCMEs) in the coronagraph field of view allows one to only determine the apparent parameters in the plane of the sky. Recently, several methods have been proposed allowing one to find some true geometrical and kinematical parameters of HCMEs. In most cases, a simple cone model was used to describe the CME sha…