Astrofísicas: Granulación solar

  • Publicación
    Numerical determination of the modulation transfer function from observations of granulation outside the disk centre.
    A spectral ratio, similar to that of von der Lühe (1984), is proposed to derive information on the degradation of the mean granular power spectrum at a position...
  • Publicación
    Photometry and spectroscopy of the solar granulation along the polar axis and equator
    From high-resolution CCD images of granulation obtained at the Swedish Solar Tower of the Observatorio del Roque de los Muchachos at different positions on the...
  • Publicación
    Photometry of light-bridges in sunspots
    The decay of a sunspot region was studied using high resolution white-light pictures. The photometric and geometric parameters of a light-bridge showing...
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    Spatially highly resolved time series of solar granulation spectra.
    Not Available
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    Sunspot populations and their relation with the solar cycle
    The joint consideration of theoretical and observational arguments is used to conclude that two different spot populations co-exist in the Sun.
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    The flux rope models checked by some observations
    High resolution H alpha and white light observation of the birth of 73 active regions (AR) were used to check models of sunspots. It is concluded that large AR...
  • Publicación
    The observation of intrinsically different emergences for large and small active regions
    The analysis of high-resolution H-alpha and white-light observations on the emergence of 73 active regions shows an intrinsically different behavior for both...
  • Publicación
    The observed background solar velocity noise
    Using accurate radial velocity observations of integral sunlight, the background solar velocity noise has been measured at different frequencies of interest for...
  • Publicación
    The search for solar oscillations, 1974 to 1976
    Using a resonant scattering spectrometer, observations of integral solar light have been recorded and analyzed to determine the existence of solar oscillations...