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Silicon X-ray line emission from solar flares and active regionsNew observations of solar flare and active region X-ray spectra obtained with the Columbia University instrument on OSO-8 are presented and discussed. The high sensitivity of the graphite crystal panel has allowed both line and continuum spectra to be served with moderate spectral resolution. Observations with higher spectral resolution have been made with a panel of pentaerythritol crystals. Twenty-nine lines between 1.5 and 7.0 A have been resolved and identified, including several dielectronic recombination satellite lines to Si XIV and Si XIII lines which have been observed for the first time. It has been found that thermal continuum models specified by single values of temperature and emission measure have fitted the data adequately, there being good agreement with the values of these parameters derived from line intensity ratios.
Document ID
19790037878
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Parkinson, J. H.
(Columbia University New York, N.Y.; London, University College, Dorking, Surrey, United Kingdom)
Wolff, R. S.
(Columbia Univ. New York, NY, United States)
Kestenbaum, H. L.
(Columbia Univ. New York, NY, United States)
Ku, W. H.-M.
(Columbia Univ. New York, NY, United States)
Lemen, J. R.
(Columbia Univ. New York, NY, United States)
Long, K. S.
(Columbia Univ. New York, NY, United States)
Novick, R.
(Columbia Univ. New York, NY, United States)
Suozzo, R. J.
(Columbia University New York, N.Y., United States)
Weisskopf, M. C.
(NASA Marshall Space Flight Center Huntsville, Ala.; Columbia University, New York, N.Y., United States)
Date Acquired
August 9, 2013
Publication Date
November 1, 1978
Publication Information
Publication: Solar Physics
Volume: 60
Subject Category
Solar Physics
Accession Number
79A21891
Funding Number(s)
CONTRACT_GRANT: NAS5-22408
Distribution Limits
Public
Copyright
Other

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