Publication type: Refereed

  • Publication
    Acoustic oscillations and dynamo action in the G8 sub-giant EK Eridani
    We present further evidence of acoustic oscillations in the slowly rotating overactive G8 sub-giant EK Eri. This star was observed with the 1m Hertzsprung SONG...
  • Publication
    Acoustic power absorption and enhancement generated by slow and fast MHD waves. Evidence of solar cycle velocity/intensity amplitude changes consistent with the mode conversion theory
    We used long duration, high quality, unresolved (Sun-as-a star) observations collected by the ground based network BiSON and by the instruments GOLF and VIRGO...
  • Publication
    Acoustic-gravity wave propagation characteristics in three-dimensional radiation hydrodynamic simulations of the solar atmosphere
    There has been tremendous progress in the degree of realism of three-dimensional radiation magneto-hydrodynamic simulations of the solar atmosphere in the past...
  • Publication
    Active galactic nuclei and nuclear starbursts.
    The Starburst model for radio-quiet Active Galactic Nuclei (AGN) postulates that the activity seen in most AGN is powered solely by young stars and compact...
  • Publication
    Active Galactic Nuclei Feedback and the Origin and Fate of the Hot Gas in Early-type Galaxies
    A recent determination of the relationships between the X-ray luminosity of the ISM (L X) and the stellar and total mass for a sample of nearby early-type...
  • Publication
    Active region asymmetry as a result of the rise of magnetic flux tubes
    The magnetic flux tubes that rise across the convection zone to produce active regions are shown to develop a difference in inclination between their preceding...
  • Publication
    Active Region Filaments Might Harbor Weak Magnetic Fields
    Recent spectropolarimetric observations of active region filaments have revealed polarization profiles with signatures typical of the strong field Zeeman regime...
  • Publication
    Active region fine structure observed at 0.08 arcsec resolution
    Context. The various mechanisms of magneto-convective energy transport determine the structure of sunspots and active regions. Aims: We characterise the...
  • Publication
    Active Region Magnetic Fields. I. Plage Fields
    We present observations taken with the Advanced Stokes Polarimeter (ASP) in active-region plages and study the frequency distribution of the magnetic field...