Evolution of the source region of the interplanetary magnetic cloud of 18-20 Oct. 1995
Abstract
We follow the evolution and activity of the reversed polarity AR 7912 using multi-wavelength observations. We find that the presence of high shear increased by flux emergence led to the occurrence of a long-duration eruptive flare on 14 October 1995, which was manifested in the SXR corona by an arcade of expanding sigmoidal loops. A twisted magnetic cloud was observed at 1 AU between October 18-20. We propose that it was ejected from this reversed polarity AR, and it was associated with the expanding sigmoids.
- Publication:
-
Advances in Space Research
- Pub Date:
- 2002
- DOI:
- 10.1016/S0273-1177(02)00216-8
- Bibcode:
- 2002AdSpR..29.1489V