Astrofísicas: Manchas solares

  • Publicación
    Magnetoacoustic Waves in Sunspots
    Observed variations of the magnetic field strength in sunspot umbrae consist of intrinsic oscillations and ``false'' oscillations due to time-dependent opacity...
  • Publicación
    Magnetohydrostatic Sunspot Models from Deep Subphotospheric to Chromospheric Layers
    In order to understand the influence of magnetic fields on the propagation properties of waves, as derived from different local helioseismology techniques...
  • Charla
    Mapping the Sun's upper photosphere with artificial neural networks
    In this talk I'll present results from a recent paper in which we have developed a new analysis technique for solar spectra based on artificial neural networks...
  • Publicación
    Methodology for Predicting the Probability Distribution of the Amplitude of Solar Cycle 25
    A number of precursor-type methods for solar-cycle prediction are based on the use of regression models and confidence-level estimates. A drawback of these...
  • Publicación
    Moat Flow in the Vicinity of Sunspots for Various Penumbral Configurations
    High-resolution time series of sunspots have been obtained with the Swedish 1 m Solar Telescope between 2003 and 2006 at different locations on the solar disk...
  • Publicación
    Morphology and evolution of umbral dots and their substructures
    Context: Substructures - dark lanes and tails - of umbral dots (UDs) were predicted by numerical simulations of magnetoconvection and have been detected later...
  • Publicación
    Moving Magnetic Features as Prolongation of Penumbral Filaments
    A sequence of 633 high spatial resolution magnetograms and continuum images from SOHO MDI of NOAA AR 0330 is used to study moving magnetic feature (MMF)...
  • Publicación
    Naked emergence of an anti-Hale active region. I. Overall evolution and magnetic properties
    Aims: In order to understand the emergence of the active region, we investigate the emerging process and magnetic properties of a naked anti-Hale active region...
  • Publicación
    New information about solar rotation
    It is pointed out that the phenomenon of solar rotation is known since the introduction of the telescope into astronomy by Galilei in 1610. Regular measurements...