Astrofísicas: Campos magnéticos

  • Publicación
    Intermittent solar activity by an on-off dynamo.
    We show that the alteration between intervals of cyclic activity and grand minima like the Maunder minimum in the 17th century, which is characteristic for the...
  • Publicación
    Internetwork magnetic field distribution from simultaneous 1.56 μm and 630 nm observations
    Aims:We study the contradictory magnetic field strength distributions retrieved from independent analyses of spectropolarimetric observations in the near...
  • Publicación
    Internetwork magnetic fields observed in the visible.
    We present internetwork quiet Sun spectropolarimetric observations taken simultaneously at the Fe I lines at 630 and 525 nm. The magnetometry at 630 nm in these...
  • Charla
    Introduction of new postdocs. (1) Stellar magnetic fields, (2) My humble efforts to understand galaxy formation and evolution, (3) Waiting for Herschel: my perspective
    (1) Stellar magnetic fields. Spectro-polarimetry is a very powerful tool to diagnose magnetic fields in a large variety of astrophysical objects. My research...
  • Publicación
    Inversion of Stokes Profiles from Solar Magnetic Elements
    We describe a new LTE inversion code for the analysis of Stokes profiles emerging from unresolved magnetic elements. It has been specifically designed to obtain...
  • Publicación
    Inversion of Stokes profiles with systematic effects
    Quantitative thermodynamical, dynamical and magnetic properties of the solar and stellar plasmas are obtained by interpreting their emergent non-polarized and...
  • Publicación
    Inversion Techniques Applied to Sunspot Spectropolarimetric Data
    Two inversion techniques are compared: the Unno-Rachkov-sky fitting method (UR) and the Stokes Inversion based on Response functions (SIR). Results with...
  • Publicación
    Investigating the Relation between Sunspots and Umbral Dots
    Umbral dots (UDs) are transient, bright features observed in the umbral region of a sunspot. We study the physical properties of UDs observed in sunspots of...
  • Publicación
    Investigation of the cosmic ray population and magnetic field strength in the halo of NGC 891
    Context. Cosmic rays and magnetic fields play an important role for the formation and dynamics of gaseous halos of galaxies. Aims: Low-frequency radio continuum...