Astrophysical: Magnetic fields

  • Publication
    A first look into the magnetic field configuration of prominence threads using spectropolarimetric data
    We show preliminary results of an ongoing investigation aimed at determining the configuration of the magnetic field vector in the threads of a quiescent...
  • Publication
    A full-Stokes polarimeter for the GREGOR Fabry-Perot interferometer
    One of the first post-focus instruments of the new solar telescope GREGOR will be a Fabry-Perot spectrometer, which is an upgrade of the Göttingen Fabry-Perot...
  • Publication
    A Full-Sun Magnetic Index from Helioseismology Inferences
    Solar magnetic indices are used to model the solar irradiance and ultimately to forecast it. However, the observation of such indices is generally limited to...
  • Publication
    A meta-analysis of the magnetic line broadening in the solar atmosphere
    A multiline Bayesian analysis of the Zeeman broadening in the solar atmosphere is presented. A hierarchical probabilistic model, based on the simple but...
  • Publication
    A modified Milne-Eddington approximation for a qualitative interpretation of chromospheric spectral lines
    Context. The Milne-Eddington approximation provides an analytic and simple solution to the radiative transfer equation. It can be easily implemented in...
  • Publication
    A Near-Infrared Line of Mn I as a Diagnostic Tool of the Average Magnetic Energy in the Solar Photosphere
    We report on spectropolarimetric observations of a near-IR line of Mn I located at 15262.702 Å whose intensity and polarization profiles are very sensitive to...
  • Publication
    A New Approach to the Solar Oxygen Abundance Problem
    In this work we present new data that sets strong constraints on the solar oxygen abundance. Our approach, based on the analysis of spectropolarimetric...
  • Publication
    A New View of the Solar Interface Region from the Interface Region Imaging Spectrograph (IRIS)
    The Interface Region Imaging Spectrograph (IRIS) has been obtaining near- and far-ultraviolet images and spectra of the solar atmosphere since July 2013. IRIS...
  • Publication
    A Novel Investigation of the Small-scale Magnetic Activity of the Quiet Sun via the Hanle Effect in the Sr I 4607 Å Line
    One of the key research problems in stellar physics is to decipher the small-scale magnetic activity of the quiet solar atmosphere. Recent magneto-convection...