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The Magnetic Free Energy in Active RegionsThe magnetic field permeating the solar atmosphere governs much of the structure, morphology, brightness, and dynamics observed on the Sun. The magnetic field, especially in active regions, is thought to provide the power for energetic events in the solar corona, such as solar flares and Coronal Mass Ejections (CME) and is believed to energize the hot coronal plasma seen in extreme ultraviolet or X-rays. The question remains what specific aspect of the magnetic flux governs the observed variability. To directly understand the role of the magnetic field in energizing the solar corona, it is necessary to measure the free magnetic energy available in active regions. The grant now expiring has demonstrated a new and valuable technique for observing the magnetic free energy in active regions as a function of time.
Document ID
20010093081
Acquisition Source
Goddard Space Flight Center
Document Type
Other
Authors
Metcalf, Thomas R.
(Lockheed Martin Space Systems Co. Palo Alto, CA United States)
Mickey, Donald L.
(Hawaii Univ. Honolulu, HI United States)
LaBonte, Barry J.
(Hawaii Univ. Honolulu, HI United States)
Date Acquired
September 7, 2013
Publication Date
September 15, 2001
Subject Category
Solar Physics
Funding Number(s)
CONTRACT_GRANT: NAG5-7438
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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