15 citations · 44 across the 8 of their papers we have counts for
7 papers · 1 filter
A stray light analysis for SO/PHI-HRT and an updated comparison of the inferred magnetic field with SDO/HMI
Jonas Sinjan, Tino L. Riethmüller, Achim Gandorfer +6
Context. The High Resolution Telescope of the Polarimetric and Helioseismic Imager on Solar Orbiter (SO/PHI-HRT) operates in an extreme observational environment, observing the Sun…
Solar photospheric velocities measured in space: a comparison between SO/PHI-HRT and SDO/HMI
D. Calchetti, K. Albert, F. J. Bailén +15
The Polarimetric and Helioseismic Imager (SO/PHI) onboard Solar Orbiter is a spectropolarimeter scanning the Fe I line at 617.3 nm, providing data of the solar photosphere. The sam…
Magnetograms underestimate even unipolar magnetic flux nearly everywhere on the solar disk
Jonas Sinjan, Sami K. Solanki, Johann Hirzberger +2
We aim to test the reliability of determining the line-of-sight magnetic field from a 3D MHD simulation of a unipolar region. In contrast to earlier similar studies, we consider th…
Science Requirement Document (SRD) for the European Solar Telescope (EST) (3rd Edition, December 2025)
Rolf Schlichenmaier, Luis R. Bellot Rubio, Manuel Collados Vera +31
The European Strategy Forum on Research Infrastructures (ESFRI) included the European Solar Telescope (EST) as an ESFRI Project in its 2016 Roadmap and confirmed this status in 202…
Intensity contrast of solar plage as a function of magnetic flux at high spatial resolution
F. Kahil, T. L. Riethmüller, S. K. Solanki
Magnetic elements have an intensity contrast that depends on the type of region they are located in (e.g. quiet Sun, or active region plage). Observed values also depend on the spa…
Investigations of small-scale magnetic features on the solar surface
T. L. Riethmüller
Solar activity is controlled by the magnetic field, which also causes the variability of the solar irradiance that in turn is thought to influence the climate on Earth. The magneti…
High-resolution spectro-polarimetry of a flaring sunspot penumbra
J. Hirzberger, T. Riethm\" uller, A. Lagg +2
We present simultaneous photospheric and chromospheric observations of the trailing sunspot in NOAA 10904 during a weak flare eruption (GOES magnitude B7.8), obtained with the Swed…