LASCO observations of CMEs with helical geometries

Details LASCO observations of CMEs with helical geometries LASCO observations of CMEs with helical geometries

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...19112005d&link_type=abstract

American Astronomical Society, 191st AAS Meeting, #120.05; Bulletin of the American Astronomical Society, Vol. 29, p.1402

Astronomy and Astrophysics

Astronomy

Scientific paper

In the past, many observations of coronal mass ejections (CMEs) have been obtained. Nevertheless, their structure and magnetic topology remains an open question. Previous observations have often been found consistent with simple loop, arcade or bubble geometries. More recently, helical flux rope geometries have been suggested by Low, Chen, Rust and Kumar, and Wu et al. Observations of CMEs with the LASCO coronagraphs on SOHO include events which appear to be consistent with a toroidal geometry. This topology is also that deduced for magnetic clouds observed near the Earth. Examples of helical CMEs observed with LASCO are presented and analyzed.

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