Astrophysical: Magnetic fields

  • Publication
    Nonequilibrium ionization and ambipolar diffusion in solar magnetic flux emergence processes
    Context. Magnetic flux emergence from the solar interior has been shown to be a key mechanism for unleashing a wide variety of phenomena. However, there are...
  • Publication
    Nonlinear force-free modelling: influence of inaccuracies in the measured magnetic vector
    Context. Solar magnetic fields are regularly extrapolated into the corona starting from photospheric magnetic measurements that can be affected by significant...
  • Publication
    Nonlinear Instability of Kink Oscillations due to Shear Motions
    First results from a high-resolution three-dimensional nonlinear numerical study of the kink oscillation are presented. We show in detail the development of a...
  • Publication
    Nonlinear Numerical Simulations of Magneto-Acoustic Wave Propagation in Small-Scale Flux Tubes
    We present results of nonlinear, two-dimensional, numerical simulations of magneto-acoustic wave propagation in the photosphere and chromosphere of small-scale...
  • Publication
    Numerical modelling of spectral line asymmetries in photospheric structures. II. Plage regions.
    A numerical code has been developed for modelling the asymmetries in three spectral lines (K I 7699, Fe I 5576 and Fe I 5635A) formed at different photospheric...
  • Publication
    Numerical simulation of propagation of the MHD waves in sunspots
    We present results of numerical 3D simulation of propagation of MHD waves in sunspots. We used two self consistent magnetohydrostatic background models of...
  • Publication
    Numerical simulations of kinematic dynamo action
    Numerical simulations of kinematic dynamo action in steady and three-dimensional ABC flows are presented with special focus on the difference in growth rates...
  • Publication
    Numerical simulations of linear magnetohydrodynamic waves in two-dimensional force-free magnetic fields
    High resolution observations of the solar corona made with instruments onboard the SOHO and TRACE spacecrafts have provided new evidence for the presence of...
  • Publication
    Numerical simulations of quiet Sun magnetic fields seeded by the Biermann battery
    The magnetic fields of the quiet Sun cover at any time more than 90% of its surface and their magnetic energy budget is crucial to explain the thermal structure...