Topology of stellar coronae
Abstract
While the existence of cycles in stellar chromospheric flux has been known for some time, the nature of the corresponding coronal response has been more elusive. We describe recent results on the relationship between cyclic variations in surface magnetic flux and coronal structure and re-assess the role of prominence observations in understanding the topology of stellar coronas. We present a new paradigm for prominence support which allows for extended prominences to co-exist with a compact corona. We discuss briefly the recent results on coronal structure in high- and low-mass stars and their implications for dynamo theory.
- Publication:
-
Highlights of Astronomy
- Pub Date:
- August 2007
- DOI:
- 10.1017/S1743921307010642
- Bibcode:
- 2007HiA....14..289J
- Keywords:
-
- stars: activity;
- stars: imaging;
- stars: magnetic fields