Flares are among the most energetic magnetic solar phenomena. They are often accompanied by ejections of charged particles, which have a direct influence on the...
Formation of the Mg II h and k Polarization Profiles in a Solar Plage Model and Their Suitability to Infer Magnetic Fields
The Mg II h and k lines are among the strongest in the near-ultraviolet solar spectrum and their line core originates in the upper chromosphere, just below the...
Full Stokes-vector Inversion of the Solar Mg II h and k Lines
The polarization of the Mg II h and k resonance lines is the result of the joint action of scattering processes and the magnetic field–induced Hanle, Zeeman...
Introduction of new postdocs. (1) Stellar magnetic fields, (2) My humble efforts to understand galaxy formation and evolution, (3) Waiting for Herschel: my perspective
(1) Stellar magnetic fields. Spectro-polarimetry is a very powerful tool to diagnose magnetic fields in a large variety of astrophysical objects. My research...
Inversion of the radiative transfer equation for polarized light
Since the early 1970s, inversion techniques have become the most useful tool for inferring the magnetic, dynamic, and thermodynamic properties of the solar...
We present a visual determination of the number of bright points (BPs) existing in the quiet Sun, which are structures though to trace intense kG magnetic...
Magnetic Field Information in the Near-ultraviolet Fe II Lines of the CLASP2 Space Experiment
We investigate theoretically the circular polarization signals induced by the Zeeman effect in the Fe II lines of the 279.3-280.7 nm spectral range of the...
Magnetic reconnection in partially ionized plasmas
The phenomenon of magnetic reconnection in a magnetized plasma has been a subject of numerous studies over the past several decades in a variety of contexts...