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Electric currents and coronal heating in NOAA active region 6952We examine the spatial and temporal relationship between coronal structures observed with the soft X-ray telescope (SXT) on board the Yohkoh spacecraft and the vertical electric current density derived from photospheric vector magnetograms obtained using the Stokes Polarimeter at the Mees Solar Observatory. We focus on a single active region: AR 6952 which we observed on 7 days during 1991 December. For 11 independent maps of the vertical electric current density co-aligned with non-flaring X-ray images, we search for a morphological relationship between sites of high vertical current density in the photosphere and enhanced X-ray emission in the overlying corona. We find no compelling spatial or temporal correlation between the sites of vertical current and the bright X-ray structures in this active region.
Document ID
19950029148
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Metcalf, T. R.
(Hawaii Univ. Honolulu, HI, United States)
Canfield, R. C.
(Hawaii Univ. Honolulu, HI, United States)
Hudson, H. S.
(Hawaii Univ. Honolulu, HI, United States)
Mickey, D. L.
(Hawaii Univ. Honolulu, HI, United States)
Wulser, J. -P.
(Hawaii Univ. Honolulu, HI, United States)
Martens, P. C. H.
(Lockheed Palo Alto Research Lab, Palo Alto, CA United States)
Tsuneta, S.
(Tokyo Univ. Tokyo, Japan)
Date Acquired
August 16, 2013
Publication Date
June 20, 1994
Publication Information
Publication: The Astrophysical Journal
Volume: 428
Issue: 2 pt
ISSN: 0004-637X
Subject Category
Astronomy
Accession Number
95A60747
Funding Number(s)
CONTRACT_GRANT: NAS8-37334
CONTRACT_GRANT: NAGW-1542
Distribution Limits
Public
Copyright
Other

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