We analyze the propagation of waves in sunspots from the photosphere to the chromosphere using time series of co-spatial Ca II H intensity spectra (including...
Multi-parametric Study of Rising 3D Buoyant Flux Tubes in an Adiabatic Stratification Using AMR
We study the buoyant rise of magnetic flux tubes embedded in an adiabatic stratification using two-and three-dimensional, magnetohydrodynamic simulations. We...
Multi-Scale Analysis of Magnetic Fields in Filamentary Molecular Clouds
Using polarimetry, at both visible and submillimeter wavelengths, we propose to study the role and to compare the structure of the magnetic fields within and...
Multi-scale Analysis of Magnetic Fields in Filamentary Molecular Clouds in Orion A
New visible and K-band polarization measurements of stars surrounding molecular clouds in Orion A and stars in the Becklin-Neugebauer (BN) vicinity are...
Multidimensional simulation of the rise of magnetic flux tubes
Recent results obtained through the 2D or 3D numerical simulation of the rise of magnetic flux tubes in the solar convection zone are discussed. The one-...
Multifrequency observations of non-magnetic cataclysmic variables.
The authors review the multifrequency behaviour of the so-called non-magnetic cataclysmic variables (NMCVs) after having discussed the classification of the CVs...
Multiline Spectropolarimetry of the Quiet Sun at 5250 and 6302 Å
The reliability of quiet-Sun magnetic field diagnostics based on the Fe I lines at 6302 Å has been questioned by recent work. Here we present the results of a...
Multiline Stokes Analysis for the Study of Small-Scale Solar Magnetic Fields
Combining observations of spectral lines with different Zeeman sensitivities, it is possible to infer some properties of the small-scale solar magnetic fields...
Context: To obtain a significant Zeeman signature in the polarised spectra of a magnetic star, we usually “add” the contributions of numerous spectral lines...