Astrophysical: Magnetic fields

  • Publication
    High-Resolution Proper Motions in a Sunspot Penumbra
    Local correlation tracking techniques are used to measure proper motions in a series of high angular resolution (~0.1") penumbra images. If these motions trace...
  • Publication
    Hinode Observations of Horizontal Quiet Sun Magnetic Flux and the ``Hidden Turbulent Magnetic Flux''
    We present observations of magnetic fields of the very quiet Sun near disk center using the Spectro-Polarimeter of the Solar Optical Telescope aboard the Hinode...
  • Publication
    Horizontal flow fields in and around a small active region. The transition period between flux emergence and decay
    Context. The solar magnetic field is responsible for all aspects of solar activity. Thus, emergence of magnetic flux at the surface is the first manifestation...
  • Publication
    How to infer the Sun's global magnetic field using the Hanle effect
    We present a different approach to determine the characteristics of the global magnetic field of the Sun based on the study of the Hanle signals. The Hanle...
  • Talk
    IAU G5 Talk: Winds of Magnetic Massive Stars
    Massive stars (at least eight times as massive as the Sun) possess strong stellar winds driven by radiation. With the advent of the so called MiMeS...
  • Publication
    Improved detection of far-side solar active regions using deep learning
    Context. The analysis of waves on the visible side of the Sun allows the detection of active regions on the far side through local helioseismology techniques...
  • Publication
    Indication of the Hanle Effect by Comparing the Scattering Polarization Observed by CLASP in the Lyα and Si iii 120.65 nm Lines
    The Chromospheric Lyman-Alpha Spectro-Polarimeter is a sounding rocket experiment that has provided the first successful measurement of the linear polarization...
  • Publication
    Inference of electric currents in the solar photosphere
    Context. Despite their importance, routine and direct measurements of electric currents, j, in the solar atmosphere have generally not been possible. Aims: We...
  • Publication
    Inference of magnetic fields in the very quiet Sun
    Context. Over the past 20 yr, the quietest areas of the solar surface have revealed a weak but extremely dynamic magnetism occurring at small scales (