Astrofísicas: Campos magnéticos solares

  • Charla
    (1) Polarized Line Formation theories: the relevance of partial; (2) TBD; (3) On all things transit.
    1) Polarized Line Formation theories: the relevance of partial non-coherence in light scattering. Dr. Sampoorna Malali The basic theoretical tool for diagnosing...
  • Charla
    (1) The effect of magnetic fields on solar abundance determinations (2) The solar photosphere in 3D. This time from observations
    (1) In a recently published differential analysis (see Fabbian et al) we have derived abundance corrections for iron lines, using synthetic spectra from solar...
  • Charla
    1st IAU-G5 seminar: The revolution of task-based computing, applied to stellar and planetary atmospheres
    (This seminar is organized by the IAU G5 commission on stellar and planetary atmospheres) Task-based computing is a method where computational problems are...
  • Charla
    Are chromospheric fibrils tracing the magnetic field?
    Fibrils are thin elongated features visible in the solar chromosphere in and around magnetized regions. Because of their visual appearance they have been...
  • Publicación
    Chromospheric Magnetic Field: A Comparison of He I 10830 Å Observations with Nonlinear Force-free Field Extrapolation
    The nonlinear force-free field (NLFFF) modeling has been extensively used to infer the three-dimensional magnetic field in the solar corona. One of the...
  • Publicación
    Chromospheric Magnetism and the Hanle Effect
    This article shows how some recent developments in the observation and theoretical modeling of weak polarization signals in chromospheric spectral lines are...
  • Charla
    Collapsograms: measurement of low signal-to-noise-ratio solar p modes in spatially-resolved helioseismic data
    1.- I will give an overview of WeCAPP (Wendelstein Calar Alto Pixellensing Project), a microlensing survey towards the Andromeda galaxy. WeCAPP monitored the...
  • Publicación
    Comparing Observed with Simulated Solar-disk-center Scattering Polarization in the Sr I 4607 Å Line
    Solar magnetic fields alter scattering polarization in spectral lines like Sr I at 4607 Å via the Hanle effect, making it a potential diagnostic for small-scale...
  • Charla
    Convectively driven sinks and magnetic fields in the quiet Sun
    Solar surface convection displays highly localized sinks where cold plasma returns to the solar interior. On its way to being engulfed by a downdraft the plasma...