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| Paper: |
Imaging Observations of Coronal Magnetic Field by Nobeyama Radioheliograph |
| Volume: |
437, Solar Polarization Workshop 6 |
| Page: |
433 |
| Authors: |
Shibasaki, K.; Narukage, N.; Yoshimura, K. |
| Abstract: |
Coronal magnetic field in a post flare arcade of loops above the solar limb is mapped by the Nobeyama Radioheliograph. Post flare loops are filled with hot and dense plasma threaded by magnetic field. Thermal free-free microwave emission from these plasma is bright enough to carefully measure circular polarization degree. As circular polarization is the result of gyration of electrons around magnetic field, inversion of circular polarization degree to magnetic field strength is simple. We successfully measured the circular polarization degree distribution at 17 GHz and got a magnetic field map in a post flare arcade of loops above the solar limb. |
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