Analysis of the Hanle effect in solar molecular lines allows us to obtain empirical information on unresolved, tangled magnetic fields at subresolution scales...

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Imaging of the solar surface from ground based telescopes has achieved to be diffraction limited almost ten years ago, while diffraction-limited...

Due to the continuous developments in polarimetric instrumentation, which will become even more dramatic in the near future with the availability of new...

Although full interoperability between theoretical and observational data in the framework of the Virtual Observatory would be a very desirable achievement, the...

The discovery of a system of Herbig-Haro objects ejected by young, low mass stars in the &sigma Orionis region (Reipurth et al. 1998) has given rise to models...

The ultrafast relaxation of small clusters immediately after ionization is studied. For small Hg$_n$ clusters we determine the fragmentation-time distributions...

Combining an electronic theory with molecular dynamics simulations we present results for the ultrafast structural changes in small clusters. We determine the...

We present a historical review of the theory of the Zeeman effect in molecular lines, from its discovery at the end of the 19th century till today. The fast...