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Dynamical structure of extreme ultraviolet macrospiculesWe describe the substructures forming the macrospicules and their temporal evolution, as revealed by the application of an image enhancement algorithm to extreme ultraviolet (EUV) observations of macrospicules. The enhanced images uncover, for the first time, the substructures forming the column-like structures within the macrospicules and the low-lying arches at their base. The spatial and temporal evolution of macrospicules clearly show continuous interaction between these substructures with occasional ejection of plasma following a ballistic trajectory. We comment on the importance of these results for planning near future space observations of macrospicules with better temporal and spatial resolution.
Document ID
19950030779
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Karovska, Margarita (Harvard-Smithsonian Center for Astrophysics, Cambridge, MA United States)
Habbal, Shadia Rifai (Harvard-Smithsonian Center for Astrophysics, Cambridge, MA United States)
Date Acquired
August 16, 2013
Publication Date
August 10, 1994
Publication Information
Publication: The Astrophysical Journal, Part 2 - Letters
Volume: 431
Issue: 1
ISSN: 0004-637X
Subject Category
SOLAR PHYSICS
Funding Number(s)
CONTRACT_GRANT: AF-AFOSR-91-0244
CONTRACT_GRANT: NAGW-3513
CONTRACT_GRANT: NAGW-249
Distribution Limits
Public
Copyright
Other