The Rise of Magnetic Flux Tubes across a Stratified Medium: Effects of the Twist
The results of a 2D numerical simulation of the rise of twisted magnetic flux tubes are sketched. The theoretical criterion for the minimum twist necessary to...
The role of activity complexes in the distribution of solar magnetic fields.
Using published data on the large-scale distribution of solar activity, the authors conclude that the longlived coronal holes are formed and maintained by the...
The role of AGB stars in the evolution of globular clusters
The results from high-resolution spectroscopy and accurate photometry have challenged the traditional paradigm that stars in globular clusters (GC) are simple...
The Role of Bars on Bulge Formation: Stellar Line-Strength Indices of Bulges
We have carried out a long term project to analyse the role played by bars in bulge formation and the formation and evolution of bars from the point of view of...