The visibility of "halo" Coronal Mass Ejections

Authors
Andrews, MD Howard, RA Michels, DJ Lamy, PL Schwenn, R Simmett, GM
Citation
Md. Andrews et al., The visibility of "halo" Coronal Mass Ejections, PHYS CH P C, 24(1-3), 1999, pp. 57-60
Citations number
6
Categorie Soggetti
Earth Sciences
Journal title
PHYSICS AND CHEMISTRY OF THE EARTH PART C-SOLAR-TERRESTIAL AND PLANETARY SCIENCE
ISSN journal
14641917 → ACNP
Volume
24
Issue
1-3
Year of publication
1999
Pages
57 - 60
Database
ISI
SICI code
1464-1917(1999)24:1-3<57:TVO"CM>2.0.ZU;2-Z
Abstract
The January 6, 1997 halo CME is the subject of continuing research due to t he large geomagnetic effects of this event. This paper presents a very simp lified model which explains the key observational features. The CME is mode lled as a hemispherical shell with a cone shaped extension toward the sun. The observed circular are is the projection of the "shoulders" of the CME o nto the image plane. The low surface brightness and the fuzzy appearance of the halo CME are naturally explained. (C) 1998 Elsevier Science Ltd. All r ights reserved.