Astrofísicas: Campos magnéticos

  • Publicación
    The 3D structure of the penumbra at high resolution from the bottom of the photosphere to the middle chromosphere
    Sunspots are the most prominent feature of the solar magnetism in the photosphere. Although they have been widely investigated in the past, their structure...
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    The Ambipolar Filamentation in the Warm Ionized Medium
    We present the 2-D, two fluid (ions + neutrals) numerical simulations that we are carrying out in order to study the ambipolar filamentation process, in which a...
  • Publicación
    The B Fields in OB Stars (BOB) Survey
    The B fields in OB stars (BOB) survey is an ESO large programme collecting spectropolarimetric observations for a large number of early-type stars in order to...
  • Publicación
    The Calibration of the Advanced Stokes Polarimeter
    We describe and apply the methods that have been developed to calibrate the Advanced Stokes Polarimeter and to compensate for the polarization effects...
  • Publicación
    The Canopy Structure above Light Bridges
    An analysis of high-resolution Stokes observations of two light bridges in the active region NOAA 8990 is presented. The observations were recorded with the La...
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    The chromospheric component of coronal bright points. Coronal and chromospheric responses to magnetic-flux emergence
    Context. We investigate the chromospheric counterpart of small-scale coronal loops constituting a coronal bright point (CBP) and its response to a photospheric...
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    The Circular Polarization of the Mn 1 Resonance Lines around 280 nm for Exploring Chromospheric Magnetism
    We study the circular polarization of the Mn I resonance lines at 279.56, 279.91, and 280.19 nm (hereafter, UV multiplet) by means of radiative transfer...
  • Publicación
    The dependence of the magnetism of a near-limb sunspot on height
    Context. The physical parameters of the sunspot are not fully understood, especially the height dependence of the magnetic field. So far, it is also an open...
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    The diagnostic potential of the weak field approximation for investigating the quiet Sun magnetism: the Si I 10 827 Å line
    Aims: We aim to investigate the validity of the weak field approximation (WFA) for determining magnetic fields in quiet regions of the solar photosphere using...