Physics
Scientific paper
Jul 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aipc..382..177h&link_type=abstract
Proceedings of the eigth international solar wind conference: Solar wind eight. AIP Conference Proceedings, Volume 382, pp. 177
Physics
Solar Electromagnetic Emission, Visible
Scientific paper
Establishing the temperature structure and temperature gradient in the source region of the solar wind, from limb observations, is often exacerbated by the interception along the line of sight of hotter and denser material originating from the boundaries of coronal holes. Probing coronal holes, however, can be optimized with a judicious choice of spectral lines, such as the visible forbidden iron lines of Fe IX 3801, Fe X 6374 and Fe XI 7892 Å, which are sensitive to electron temperatures around 106 K. In addition observations made with the Fe XIV 5303 Å line should yield information about any hot material intercepting the line of sight. The combination of these Fe lines offers a very powerful diagnostic tool for the electron temperature within coronal holes and the structures embedded within them.
Brickhouse Nancy S.
Esser Ruth
Rifai Habbal Shadia
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