Aims:I deduced a 3D sunspot model that is in full agreement with spectropolarimetric observations, in order to address the question of a possible penumbral...
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PublicationA 3D sunspot model derived from an inversion of spectropolarimetric observations and its implications for the penumbral heating
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PublicationA distinct magnetic property of the inner penumbral boundary. II. Formation of a penumbra at the expense of a pore
Context. We recently presented evidence that stable umbra-penumbra boundaries are characterised by a distinct canonical value of the vertical component of the...
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PublicationA distinct magnetic property of the inner penumbral boundary. II. Formation of a penumbra at the expense of a pore
Context. We recently presented evidence that stable umbra-penumbra boundaries are characterised by a distinct canonical value of the vertical component of the...
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PublicationA Geometrical Height Scale for Sunspot Penumbrae
Inversions of spectropolarimetric observations of penumbral filaments deliver the stratification of different physical quantities in an optical depth scale...
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PublicationA High-Resolution Study of Inhomogeneities in Sunspot Umbrae
A detailed study of the brightness, size, spatial distribution, and filling factor of the different umbral inhomogeneities is presented. Many sunspots show...
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PublicationA high-resolution study of the structure of sunspot light bridges and abnormal granulation
Strong light bridges (SLBs) represent an abrupt change in the physical conditions of sunspot umbrae. They divide the umbra into separate units (fragments...
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PublicationA Hot Downflowing Model Atmosphere for Umbral Flashes and the Physical Properties of Their Dark Fibrils
We perform non-LTE inversions in a large set of umbral flashes, including the dark fibrils visible within them, and in the quiescent umbra by using the...
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PublicationA new method for the photometric determination of umbral and total sunspot areas.
Not Available
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PublicationA statistical study of the decay phase of sunspot groups from 1874 to 1939
A statistical study of the decay of sunspots and sunspot groups is carried out using data contained in the Greenwich Photoheliographic Results. The period...