99 citations · 1.3k across the 55 of their papers we have counts for
15 papers · 1 filter
Sunspots: from small-scale inhomogeneities towards a global theory
Rolf Schlichenmaier
The penumbra of a sunspot is a fascinating phenomenon featuring complex velocity and magnetic fields. It challenges both our understanding of radiative magneto-convection and our m…
Reversal-free CaIIH profiles: a challenge for solar chromosphere modeling in quiet inter-network
R. Rezaei, J. H. M. J. Bruls, W. Schmidt +3
We study chromospheric emission to understand the temperature stratification in the solar chromosphere. We observed the intensity profile of the CaIIH line in a quiet Sun region cl…
Temporal evolution of magnetic elements
R. Rezaei, R. Schlichenmaier, W. Schmidt +1
We study the structure and evolution of the magnetic field of the quiet Sun by investigating weak spectro-polarimetric signals. To this end, we observed a quiet region close to the…
Hinode observations reveal boundary layers of magnetic elements in the solar photosphere
R. Rezaei, O. Steiner, S. Wedemeyer-Böhm +3
We study the structure of the magnetic elements in network-cell interiors. A quiet Sun area close to the disc centre was observed with the spectro-polarimeter of the Solar Optical…
The Fine-Structure of the Net-Circular Polarization in a Sunspot Penumbra
A. Tritschler, D. A. N. Mueller, R. Schlichenmaier +1
We present novel evidence for a fine structure observed in the net-circular polarization (NCP) of a sunspot penumbra based on spectropolarimetric measurements utilizing the Zeeman…
Magnetic properties of G-band bright points in a sunspot moat
C. Beck, L. R. Bellot Rubio, R. Schlichenmaier +1
We present simultaneous spectropolarimetric observations of four visible and three infrared spectral lines from the VTT (Tenerife), together with speckle-reconstructed filtergrams…