Astrofísicas: Manchas solares

  • Publicación
    On the relation between the intensities of bright features and the local background in sunspot umbrae
    A photometric study of umbral bright features (umbral dots, clusters of umbral dots, bright grains of light bridges) in sunspots is presented. It is based on...
  • Publicación
    On the Source of Propagating Slow Magnetoacoustic Waves in Sunspots
    Recent high-resolution observations of sunspot oscillations using simultaneously operated ground- and space-based telescopes reveal the intrinsic connection...
  • Publicación
    On the temperature and velocity through the photosphere of a sunspot penumbra
    We investigate the structure in depth of a sunspot penumbra by means of the inversion code of the radiative transfer equation proposed by Ruiz Cobo & del Toro...
  • Publicación
    On the theory of MAG waves and a comparison with sunspot observations from CDS/SoHO
    We examine the influence of non-adiabatic effects on the modes of an isothermal stratified magnetic atmosphere. We present new solutions for magneto-acoustic...
  • Publicación
    On the width distribution of penumbral filaments in sunspots
    The width distribution of the penumbral filaments is estimated using white light photographs obtained with a vacuum, Newtonian type telescope. Observations were...
  • Publicación
    Optical Tomography of a Sunspot. I. Comparison between Two Inversion Techniques
    A quantitative comparison between the Milne-Eddington (ME) inversion technique implemented by Skumanich & Lites and the SIR (Stokes Inversion based on Response...
  • Publicación
    Optical Tomography of a Sunspot. II. Vector Magnetic Field and Temperature Stratification
    An observational determination of the three-dimensional magnetic and thermal structure of a sunspot is presented. It has been obtained through the application...
  • Publicación
    Optical Tomography of a Sunspot. III. Velocity Stratification and the Evershed Effect
    The stratification with optical depth of the line-of-sight (LOS) velocity of a simple, isolated, round sunspot observed with the Advanced Stokes Polarimeter...
  • Publicación
    Optical Tomography of a Sunspot: Preliminary Results
    Preliminary results of the inversion of spectropolarimetric maps of a sunspot observed with the Advanced Stokes Polarimeter (ASP) are presented. The method used...