Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsh33a2031r&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SH33A-2031
Astronomy and Astrophysics
Astrophysics
[7509] Solar Physics, Astrophysics, And Astronomy / Corona
Scientific paper
The corona is the uppermost part of the Sun's atmosphere and, up to now, total solar eclipses provide the best conditions for observing it from Earth's surface. The white-light corona (WLC) is the scattered light of the photosphere off free electrons and it dominates in the regions up to 2-3 solar radii. As the motion of electrons is governed by magnetic fields of the corona, and these fields are sensitive to the phase of the solar cycle, the WLC exhibits many faces and a variety of fine structures throughout a cycle. When observing the WLC, one faces problems due to a steep gradient of its brightness and difficulties in discerning individual structures. Our contribution presents a set of unique eclipse pictures of the WLC that were processed by Druckmüller's method; they cover the period from 2001 to 2010 and thus give a fairly good idea about the changes in both the shape and the fine structure of the WLC over a whole solar cycle.
Bělik Marcel
Druckmuller Miloslav
Pasachoff Jay
Rusin Vojtech
Saniga Metod
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