AAS 200th meeting, Albuquerque, NM, June 2002
Session 88. Atmospheric Heating and Dynamics II
Oral, Thursday, June 6, 2002, 2:00-3:30pm, San Miguel

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[88.09] Long-Term Variation of Solar Coronal Fe XIV and Fe X Fluxes

R. C. Altrock (Air Force Research Laboratory, Space Vehicles Directorate, National Solar Observatory at Sacramento Peak )

Synoptic photoelectric observations of the coronal Fe XIV and Fe X emission lines at 530.3 nm and 637.4 nm, respectively, are analyzed to study the output of the solar corona in these lines as a function of time. The data used are measurements made with the NSO/Sacramento Peak 40-cm coronagraph and Emission-Line Coronal Photometer of the intensity of these lines observed at 1.15 solar radii between 1973 (1984 for Fe X) and 2002. A new calibration determination is used to convert relative intensities to absolute intensities. The solar-cycle variation of these fluxes will be compared to each other and to other solar-cycle parameters. One interesting result is that a constant minimum or basal corona may exist at solar minimum. This paper was supported by the Air Force Office of Scientific Research.

If you would like more information about this abstract, please follow the link to http://www.nso.edu/CORONA. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

The author(s) of this abstract have provided an email address for comments about the abstract: altrock@nso.edu

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Bulletin of the American Astronomical Society, 34
© 2002. The American Astronomical Soceity.