Chariklo is known to possess an exotic ring system and we show indications from several distinct data sets that Chiron also has a ring system with similar...

The choice of transit detection algorithm can have a strong influence on the results of any photometric exoplanet search. This paper outlines a technique by...

The effects of atmospheric dispersion on the performance of astronomical Adaptive Optics (AO) were already described in the 70's, and they are generally...

A description of the emergence of large concentrations of magnetic fields (active regions) at the solar surface is presented. The dark structures known as...

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The Chromospheric Lyman-Alpha Spectro-Polarimeter (CLASP) is a VUV spectropolarimeter optimized for measuring the linear polarization of the Lyman-alpha line...

One of the biggest challenges in heliophysics is to decipher the magnetic structure of the solar chromosphere. The importance of measuring the chromospheric...

This article shows how some recent developments in the observation and theoretical modeling of weak polarization signals in chromospheric spectral lines are...