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O VI Profiles of Solar Quiet and Active Areas Recorded by OSO-8 L.P.S.P. Experiment

Published online by Cambridge University Press:  25 September 2017

P. Lemaire ,
P. McWhirter ,
G. Artzner ,
J. C. Vial ,
R.M. Bonnet ,
P. Gouttebroze ,
A. Jouchoux ,
J. Leibacher ,
A. Skumanich  and
A. Vidal-Madjar
P. McWhirter
Affiliation:
Culham Laboratory, Abingdon, Oxon, England
J. Leibacher
Affiliation:
Lockheed Research Laboratory, Palo Alto, Ca., U.S.A.
A. Skumanich
Affiliation:
High Altitude Observatory, National Center for Atmospheric Research, Boulder, Co., U.S.A.

Extract

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O VI resonance line (2s2S - 2p2PO , 103.19 nm) is formed in the chromosphere-corona transition zone with a temperature of maximum ionization of 350 000°C (Jordan, 1969). The OSO-8/LPSP experiment has observed this line with a 0.006 nm resolution, few arcseconds angular resolution and a time resolution up to few seconds. We present the shape of the line in different areas on the sun (quiet and active). As transition lines are used to determine propagation of wave from chromosphere to corona, we compare width of the O VI line with other measurements obtained with lines of lower ionization temperature. From successive profiles we consider the possibility of direct measurements of wave propagating.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 43: Vth Conference on UV & X-Ray Spectroscopy of Astrophysical & Laboratory Plasmas , July 1977 , pp. 46
Copyright
Copyright © Crown Research Institutes 1977