Astrophysical: Solar magnetic fields

  • Talk
    Convectively driven vortex flows in the Sun
    We have discovered small whirlpools in the Sun, with a size similar to the terrestrial hurricanes (<0.5 Mm). The theory of solar convection predicts them, but...
  • Publication
    Effects of Spectral Resolution on Simple Magnetic Field Diagnostics of the Mg II H and K Lines
    We study the effects of finite spectral resolution on the magnetic field values retrieved through the weak-field approximation (WFA) from the cores of the Mg II...
  • Publication
    Emergence of Internetwork Magnetic Fields through the Solar Atmosphere
    Internetwork (IN) magnetic fields are highly dynamic, short-lived magnetic structures that populate the interior of supergranular cells. Since they emerge all...
  • Publication
    Evaluating the Reliability of a Simple Method to Map the Magnetic Field Azimuth in the Solar Chromosphere
    The Zeeman effect is of limited utility for probing the magnetism of the quiet solar chromosphere. The Hanle effect in some spectral lines is sensitive to such...
  • Publication
    Evaluation of a Magnetic Field Inversion Method Using Only Stokes I
    We compare a method for inferring the photospheric vector magnetic field using only spectroscopy to a conventional method based on polarimetry. The magnetic...
  • Publication
    Evidence for the Operation of the Hanle and Magneto-optical Effects in the Scattering Polarization Signals Observed by CLASP2 across the Mg II h and k Lines
    Radiative transfer investigations of the solar Mg II h and k resonance lines around 280 nm have shown that, while their circular polarization (Stokes V) signals...
  • Publication
    Exploring Magnetic Loops and Serpentine Fields in the Quiet Sun with the GRIS-IFU
    Synthetic observations produced from radiative magnetohydrodynamic simulations have predicted that higher polarization fractions in the quiet solar photosphere...
  • Publication
    Fast-to-Alfvén Mode Conversion and Ambipolar Heating in Structured Media. II. Numerical Simulation
    This paper studies the effectiveness of production of Alfvén waves in the solar atmosphere through the processes of mode conversion, taking into account several...
  • Talk
    Flares: highly energetic explosions on the Sun
    Flares are among the most energetic magnetic solar phenomena. They are often accompanied by ejections of charged particles, which have a direct influence on the...