Astrofísicas: Campos magnéticos

  • Publicación
    The profuse optically-thin irregularities of the photospheric magnetic fields
    The highly irregular nature of most photospheric magnetic fields is analyzed here, trying to emphasize the connection between photospheric fluctuations and...
  • Publicación
    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...
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    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...
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    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...
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    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...
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    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...
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    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...
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    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...
  • Publicación
    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...