Solar magnetic indices are used to model the solar irradiance and ultimately to forecast it. However, the observation of such indices is generally limited to...
PublicationA Full-Sun Magnetic Index from Helioseismology Inferences
PublicationA Morphological Study of the Light-Bridges in Sunspots
Abstract image available at: http://cdsads.u-strasbg.fr/abs/1973SoPh...31..377V
PublicationA new observational strategy in search for solar g-modes
The aim of the present work is the detection of solar g-modes, by means of a new observational strategy based on the exploitation of their spatial and temporal...
PublicationA Peculiar Velocity Pattern in and near the Leading Sunspot of NOAA 10781: Wave Refraction by Large-Scale Magnetic Fields?
I report observations of unusually strong photospheric and chromospheric velocity oscillations in and near the leading sunspot of NOAA 10781 on 3 July 2005. I...
PublicationAbout the rotation of the solar radiative interior
In the modern era of helioseismology we have a wealth of high-quality data available, e.g., more than 6 years of data collected by the various instruments on...
PublicationAn attempt to compare the differential rotation of the Ca/plus/-network with that of the photospheric plasma
Results of almost simultaneous observations of the differential rotation of the Ca(plus) chromosphere and the photospheric plasma are reported. The observations...
PublicationAn Umbral Brightening Associated with a Two-Ribbon Flare
We report an unusual case of a two-ribbon flare associated with an umbral brightening in a magnetically unipolar region.
PublicationAnalysis of the solar low-l p-mode asymmetries using wavelets
It is presently widely accepted that the solar low l p modes show asymmetric profiles when their power spectrum is analysed and that the fact of fitting...
PublicationAre the small active regions related to the decay of the larger ones?
According to several properties, the active regions are divided in two groups whose limit is roughly set at 1021 Mx. A statistical analysis indicates that the...