Iglesias, F. A.; Feller, A.; Solanki, S. K.; Zeuner, F.: Prototype characterization and future development of the Fast Solar Polarimeter. SOLARNET IV: The Physics of the Sun from the Interior to the Outer Atmosphere, Lanzarote, Spain (2017)
van Noort, M.; Feller, A.; de la Cruz-Rodriguez, J.; Doerr, H.-P.; Kiselman, D.: Image restoration of polarimetric spectrograph data. SOLARNET IV: The Physics of the Sun from the Interior to the Outer Atmosphere , Lanzarote, Spain (2017)
Zeuner, F.; Feller, A.; Iglesias, F.; Milic, I.; Solanki, S. K.: Spatially resolved Stokes measurements in the Sr I (4607.3 Å) line with FSP at VTT/TESOS. SOLARNET IV: The Physics of the Sun from the Interior to the Outer Atmosphere, Lanzarote, Spain (2017)
Zeuner, F.; Feller, A.; van Noort, M.; Iglesias, F.; Reardon, K.: Fast dual-beam spectropolarimetry - first results on scattering polarization measurements with FSP II at the DST. AG 2017 HiRes Splinter, Göttingen, Germany (2017)
van Noort, M.; Feller, A.; Iglesias, F. A.; Doerr, H.-P.: Image restoration with a grating spectro-polarimeter at the SST and plans for GREGOR/GRIS. 2nd GREGOR/SOLARNET science meeting, Göttingen, Germany (2016)
Feller, A.: Solar polarimetry and the need for fast and low-noise detectors. 19th International Workshop on DEPFET Detectors and Applications, Seeon, Germany (2015)
First icy cold, then midnight sun: at the Arctic Circle, the team will prepare the next flight of the balloon-borne solar observatory - and hopes for solar fireworks.
Astronomical teamwork: By combining data from Solar Orbiter and SDO, a group of researchers has unambiguously determined the magnetic field at the solar surface.
The magnetic field in the solar atmosphere exceeds the geomagnetic field strength by four orders of magnitude. It greatly influences the processes of energy transport within the solar atmosphere, and dominates the morphology of the solar chromosphere and corona. Kinetic energy from convective motions in the Sun can be efficiently stored in magnetic fields and subsequently released - to heat the solar corona to several million degrees or to blast off coronal mass ejections.