The evolutional characteristics of magnetic and velocity fields in the photosphere and chromosphere and the relation to the large flares in AR6659.
Abstract
AR6659 is one of the most important active region, which erupted the strongest energy events in Cycle 22. The two-dimensional configuration of the region and the evolutional characteristics of the magnetic and velocity fields of the region are analysed using the photospheric and chromospheric fine structure pictures of Yunnan Observatory and the magnetic field and velocity field data of Beijing Astronomical Observatory. The off-band observation shows that the material of the flares moved forward to the red end. The flare waves propagated along the horizontal field and stimulated inductive flares at the distance of about 100000 km from the sunspot group.
- Publication:
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Publications of the Yunnan Observatory
- Pub Date:
- 1994
- Bibcode:
- 1994PYunO...3...29L
- Keywords:
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- Solar Active Regions: Velocity Fields;
- Solar Active Regions: Solar Magnetic Fields;
- Solar Chromosphere: Solar Magnetic Fields;
- Solar Chromosphere: Velocity Fields;
- Solar Photosphere: Velocity Fields;
- Solar Photosphere: Solar Magnetic Fields