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| Paper: |
Measurement of the Evolution of the Magnetic Field of the Quiet
Photosphere over a Solar Cycle |
| Volume: |
526, Solar Polarization Workshop 8 |
| Page: |
283 |
| Authors: |
Ramelli, R.; Bianda, M.; Berdyugina, S. V.; Belluzzi, L.; Kleint, L. |
| Abstract: |
The solar photosphere is filled by magnetic fields tangled at scales
much smaller than the resolution capability of solar telescopes.
These hidden magnetic fields can be investigated via the Hanle effect.
In 2007, we started a synoptic program to explore whether the magnetic flux of
the quiet photosphere varies with the solar cycle.
For this purpose we applied a differential Hanle effect technique based on
observations of scattering polarization in C2 molecular lines around
514.0 nm, taken with a cadence of approximately one month.
Our results now span almost one complete solar cycle. |
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