Spectroscopic mapping of solar wind velocities

Details Spectroscopic mapping of solar wind velocities Spectroscopic mapping of solar wind velocities

Sep 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978clus.nasa..354k&link_type=abstract

In JPL A Close-up of the Sun p 354-365 (SEE N78-32964 23-92)

Astronomy and Astrophysics

Astronomy

1

Astronomical Spectroscopy, Mapping, Solar Probes, Solar Spectra, Solar Wind Velocity, Line Spectra, Lyman Alpha Radiation, Solar Corona, Solar Eclipses, Spectrum Analysis

Scientific paper

During the total solar eclipse of 1970, measurements of resonantly scattered Lyman-alpha radiation from the solar corona revealed a means to determine temperatures and densities in the solar corona beyond 1.5 R solar radii. A natural extension of this work is to use the Solar Probe to measure the spectral line profile of Lyman-alpha radiation backscattered toward the Sun from coronal regions between 4 R solar radii and 10 R solar radii. The backscattered profile would provide unique and quantitative determinations of the outlaw velocities of coronal material into the solar wind. Such information is of critical importance for understanding solar-wind formation and solar-terrestrial effects on the earth's climate. There is no known way to obtain this information without a Solar Probe-type mission.

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