Astrophysical: Solar atmosphere

  • Publication
    Photometry of sunspot penumbrae
    The authors present the results of a statistical analysis of the penumbra of sunspots. The intensity distribution, and several parameters derived from it, is...
  • News
    Researchers have observed the heating produced in the Sun by magnetic waves
    An international team in which researchers from the Instituto de Astrofísica de Canarias (IAC) and the Universidad de La Laguna (ULL) are participating...
  • Talk
    SOLAR COMPOSITION AS A REFERENCE FOR STARS
    The solar abundance of chemical elements play an important role in addressing such important issues as the formation, structure, and evolution of the Sun and...
  • Publication
    Solar observations: Techniques and interpretation
    This book includes four chapters devoted to techniques and interpretation of solar observations. The chapter on high spatial resolution techniques considers...
  • Publication
    Solar oscillations as seen in the NaI and KI absorption lines
    Data on the solar p modes observed simultaneously in the solar NaI and KI absorption lines were obtained in 1985 by operating two independent resonant...
  • Publication
    Spectroscopic determination of intensities of umbral bright features and adjacent background
    Profiles of the Na I D doublet in three bright features (clusters of umbral dots), located in a relatively dark umbra, were analyzed by means of the 'local two...
  • Publication
    The continuum intensity-magnetic field relation in sunspot umbrae
    We describe the work carried out to obtain observational evidence of a local relation between the temperature and the magnetic field in different regions of...
  • Talk
    The coronal heating problem: why MHD waves are trendy
    The coronal heating problem has been with us for almost 70 years now. Among the different proposed explanations, wave-based heating mechanisms are recurrently...