Abstract


  DYNAMICS OF THE MAGNETIC FIELD IN THE SOLAR PHOTOSPHERE

  S. Solanki, Max-Planck-Institute for Solar System Research, solanki-office@mps.mpg.de

Although the photosphere is generally considered to be less dynamic than overlying atmospheric layers, the dynamics of the photospheric magnetic field is an important driver of the many dynamic and energetic phenomena seen in the upper solar atmosphere, so that resolving the relevant dynamics and understanding their physical basis is crucial for many parts of solar physics. Recent advances in instrumentation, data analysis and numerical simulations have led to new insights into the structure and the dynamics of the magnetic field in the solar photosphere. The biggest advances of recent years have been brought about by the possibility of measuring magnetic fields with high sensitivity and at high spatial resolution (partly in seeing-free conditions from above the ground), as well as by the increased realism of MHD simulations of the upper convection zone and solar photosphere (smaller grid sizes, larger boxes, more physics). In this talk an introduction to the rich dynamics of the magnetic field in the solar photosphere will be given based on a variety of observations and numerical simulations.