911 citations
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- AlbaNovaSE24 papers
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14 papers · 1 filter
Search for the magnetic field of the O7.5 III star xi Persei
H. F. Henrichs, R. S. Schnerr, J. A. de Jong +3
Cyclical wind variability is an ubiquitous but as yet unexplained feature among OB stars. The O7.5 III(n)((f)) star xi Persei is the brightest representative of this class on the N…
The magnetic field of the B3V star 16 Pegasi
H. F. Henrichs, C. Neiner, R. S. Schnerr +8
The Slowly Pulsating B3V star 16 Pegasi was discovered by Hubrig (2006) to be magnetic, based on low-resolution spectropolarimetric observations with FORS1 at the VLT. We have conf…
Recent Evidence for Convection in Sunspot Penumbrae
G. B. Scharmer
Whereas penumbral models during the last 15 years have been successful in explaining Evershed flows and magnetic field inclination variations in terms of flux tubes, the lack of co…
CRISP Spectropolarimetric Imaging of Penumbral Fine Structure
G. B. Scharmer, G. Narayan, T. Hillberg +6
We discuss penumbral fine structure in a small part of a pore, observed with the CRISP imaging spectropolarimeter at the Swedish 1-m Solar Telescope (SST), close to its diffraction…
Stokes imaging polarimetry using image restoration at the Swedish 1-m Solar Telescope
M. J. van Noort, L. H. M. Rouppe van der Voort
Aims: We aim to achieve high spatial resolution as well as high polarimetric sensitivity, using an earth-based 1m-class solar telescope, for the study of magnetic fine structure on…
Convection and the origin of Evershed flows in sunspot penumbrae
G. B. Scharmer, A. Nordlund, T. Heinemann
We discuss a numerical 3D radiation-MHD simulation of penumbral fine structure in a small sunspot. This simulation shows the development of short filamentary structures with horizo…