We estimate the typical spectrum of spatial fluctuations of intensity due to the penumbral filaments. High angular resolution continuum images are used (cut-off...
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PublicationThe Spectrum of Fluctuations across Penumbral Filaments
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PublicationThe subsurface structure of sunspots and the origin of solar active regions
Several topics concerning the subsurface structure and evolution of sunspots are discussed. These include the morphology and stability of the magnetized plasma...
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PublicationThe Sunrise Mission
The first science flight of the balloon-borne Sunrise telescope took place in June 2009 from ESRANGE (near Kiruna/Sweden) to Somerset Island in northern Canada...
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PublicationThe Temperature - Magnetic Field Relation in Observed and Simulated Sunspots
Observations of the relation between continuum intensity and magnetic field strength in sunspots have been made for nearly five decades. This work presents full...
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PublicationThe Thermal and Magnetic Structure of Umbral Dots from the Inversion of High-Resolution Full Stokes Observations
This paper presents the analysis of high-resolution Stokes observations of eight different umbral dots in a sunspot. The spectra were recorded with the La Palma...
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PublicationThe Three-dimensional Interaction between Emerging Magnetic Flux and a Large-Scale Coronal Field: Reconnection, Current Sheets, and Jets
Using MHD numerical experiments in three dimensions, we study the emergence of a bipolar magnetic region from the solar interior into a model corona containing...
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PublicationThe Three-dimensional Structure of a Sunspot Magnetic Field
We report on observations of the three-dimensional structure of a sunspot magnetic field from the photosphere to the chromosphere, obtained with the new visible...
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PublicationThe usefulness of analytic response functions
Aims:We introduce analytical response functions and their main properties as an important diagnostic tool that help understand Stokes profile formation physics...
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PublicationThe Zeeman Effect in the G Band
We investigate the possibility of measuring magnetic field strength in G-band bright points through the analysis of Zeeman polarization in molecular CH lines...