Multi Aperture Coronal Spectrographic Technique for Simultaneous and Global Measurements of the Coronal Electron Temperature and its Bulk Flow Speed in the Low Solar Corona

Details Multi Aperture Coronal Spectrographic Technique for Simultaneous and Global Measurements of the Coronal Electron Temperature and its Bulk Flow Speed in the Low Solar Corona Multi Aperture Coronal Spectrographic Technique for Simultaneous and Global Measurements of the Coronal Electron Temperature and its Bulk Flow Speed in the Low Solar Corona

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsh41b1123r&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SH41B-1123

Physics

7507 Chromosphere, 7509 Corona, 7513 Coronal Mass Ejections (2101), 7519 Flares, 7594 Instruments And Techniques

Scientific paper

We describe a spectrographic technique that allows for the simultaneous and global measurements of the coronal electron temperature and its bulk flow speed in the low solar corona. This information is obtained through the measurement of the K-coronal spectrum in the 3900-4400 Angstrom region, whose shape is determined by the electron temperature and its bulk flow speed. The Multi Aperture Coronal Spectrograph allows for the simultaneous measurement of the K-coronal spectra all around the low solar corona (less than 2 solar radii). Since most of the coronal temperature and solar wind speed measurements in the literature are due to ion-based techniques, it is very important to verify that the electron-based measurements compliment the ion-based measurements. This is particularly important owing to the fact that electrons are almost 2000 times lighter than the protons. And if the electron-based measurement do not compliment the proton-based measurement then it is reasonable to explore the possibilities of these two oppositely charged particles being subject to different physical mechanisms in the solar corona.

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