Presentation 1 : Poster
Coronal Supra-thermal Streams
Serge Koutchmy and Arthur Nikoghossian
Linear structures of the Solar Corona seen on eclipse images above
active regions after the flaring activity are good candidates for
being produced by primary supra-thermal streams of electrons.
We propose a method to compute the Compton scattering effect applied
to this case and compute the corresponding diagrams. This predicted
effect will be search for on eclipse data and possibly using the SoHO
Lasco coronagraph observations.
Presentation 2 : Poster
Deep Coronal Imaging using the FeXIV Green Coronal Line.
Serge Koutchmy and Christian Viladrich
Recent coronal spectra taken at the Total Eclipses of 1994-2001 showed
that the FeXIV 530.3 nm line can be rather bright up to at least a
radial distance of 2 solar radii. We designed a special imaging
experiment to study the green line emissions as far as possible during
the former June 21, 2001 eclipse in Angola.
The main results are given in this poster, including the record of
the green line emissions up to 4 solar radii. This result permits
to define a groundbased efficient coronagraph which would routinely
image the corona using this very bright line.