The 3D reconstructions of the coronal electron density in the range 1.5-4 Rsun for the whole year of 2008
Abstract
We present a three dimensional reconstructions of the electron density in the corona at the distances from 1.5 to 4R for the whole year of 2008, i.e. during solar minimum. The recon-structions is based on STEREO/COR1 data and performed using a regularized tomography inversion method. The reconstructed streamer belt structure is generally consistent with the neutral magnetic line derived from a potential field extrapolation method (PFSS) for the most of the time. However for some pre-CME events this consistency is less clear. This inconsistency could indicates the non-potentiality of the pre-CME magnetic field configuration. Also it is seen a significant density decrease in the streamer belt after some CME events. This clearly indicates the streamer blow out effect. As we have 3D reconstructed density, the streamer belt mass lost due to that CMEs is estimated.
- Publication:
-
38th COSPAR Scientific Assembly
- Pub Date:
- 2010
- Bibcode:
- 2010cosp...38.1920K