We analyze multiwavelength observations of the cancellation of a moving magnetic feature and a plage element at the outer edge of the moat of an isolated, round...
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PublicationMagnetic Flux Cancellation in the Moat of Sunspots: Results from Simultaneous Vector Spectropolarimetry in the Visible and the Infrared
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PublicationMagneto-acoustic Waves in Sunspots: First Results From a New Three-dimensional Nonlinear Magnetohydrodynamic Code
Waves observed in the photosphere and chromosphere of sunspots show complex dynamics and spatial patterns. The interpretation of high-resolution sunspot wave...
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PublicationMagnetoacoustic Wave Energy from Numerical Simulations of an Observed Sunspot Umbra
We aim at reproducing the height dependence of sunspot wave signatures obtained from spectropolarimetric observations through three-dimensional MHD numerical...
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PublicationMagnetoacoustic Waves in Sunspots
Observed variations of the magnetic field strength in sunspot umbrae consist of intrinsic oscillations and ``false'' oscillations due to time-dependent opacity...
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PublicationMagnetohydrostatic Sunspot Models from Deep Subphotospheric to Chromospheric Layers
In order to understand the influence of magnetic fields on the propagation properties of waves, as derived from different local helioseismology techniques...
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TalkMapping the Sun's upper photosphere with artificial neural networks
In this talk I'll present results from a recent paper in which we have developed a new analysis technique for solar spectra based on artificial neural networks...
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PublicationMethodology for Predicting the Probability Distribution of the Amplitude of Solar Cycle 25
A number of precursor-type methods for solar-cycle prediction are based on the use of regression models and confidence-level estimates. A drawback of these...
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PublicationMoat Flow in the Vicinity of Sunspots for Various Penumbral Configurations
High-resolution time series of sunspots have been obtained with the Swedish 1 m Solar Telescope between 2003 and 2006 at different locations on the solar disk...
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PublicationMorphology and evolution of umbral dots and their substructures
Context: Substructures - dark lanes and tails - of umbral dots (UDs) were predicted by numerical simulations of magnetoconvection and have been detected later...