Astrophysical: Magnetic fields

  • Publication
    The quiet Sun magnetic field observed with ZIMPOL on THEMIS. I. The probability density function
    Context: The quiet Sun magnetic field probability density function (PDF) remains poorly known. Modeling this field also introduces a magnetic filling factor...
  • Publication
    The relation between the column density structures and the magnetic field orientation in the Vela C molecular complex
    We statistically evaluated the relative orientation between gas column density structures, inferred from Herschel submillimetre observations, and the magnetic...
  • Publication
    The Resonant Damping of Fast Magnetohydrodynamic Oscillations in a System of Two Coronal Slabs
    Observations of transverse coronal loop oscillations very often show the excitation and damping of oscillations in groups of coronal loops rather than in...
  • Publication
    The Rise of Magnetic Flux Tubes across a Stratified Medium: Effects of the Twist
    The results of a 2D numerical simulation of the rise of twisted magnetic flux tubes are sketched. The theoretical criterion for the minimum twist necessary to...
  • Publication
    The Rise of Twisted Magnetic Tubes in a Stratified Medium
    First results from a two-dimensional numerical study of the buoyant rise of twisted magnetic flux tubes in the solar convection zone are presented. We show in...
  • Publication
    The role of the chromospheric magnetic canopy in the formation of a sunspot penumbra
    Context. While it is conjectured that a chromospheric canopy plays a role in penumbra formation, it has been difficult to find observational evidence of the...
  • Publication
    The role of the Lorentz force in sunspot equilibrium
    Context. Sunspots survive on the solar surface for timescales ranging from days to months. This requires them to be in an equilibrium involving magnetic fields...
  • Publication
    The Scattering Polarization of the Sr I λ4607 Line at the Diffraction Limit Resolution of a 1 m Telescope
    One of the greatest challenges in solar and stellar physics in the coming years will be to observe the second solar spectrum with a spatial resolution...
  • Publication
    The Second Stellar Spectrum and the non-LTE Problem of the 2nd Kind
    This paper presents an overview of the radiative transfer problem of calculating the spectral line intensity and polarization that emerges from a (generally...