|Forbidden Line Polarimetry to Detect the Evolution of the Coronal Magnetic Field
|526, Solar Polarization Workshop 8
|Li, H.; Landi Degl'Innocenti, E.; Qu, Z. Q.
|Most of the activity in the solar corona is dominated by magnetic fields.
However, the diagnostics of magnetic fields in the corona is still
challenging, simply because the field is very weak.
The forbidden line polarimetry technique was first suggested by
Charvin (1965) to determine the orientation of the coronal magnetic
field projected on the plane of sky.
In this paper, we adopt the quantum theory for the generation and
transfer of polarized radiation, in the framework of the density matrix
formalism, and we present the linearly polarized coronal emission in forbidden
lines resulting from models of the coronal magnetic field based on the
potential field assumption.
The results indicate that the forbidden line polarimetry technique may provide
a possible way to investigate the polarity reversal of the coronal magnetic
field during the solar cycle.