Journal: Astronomy and Astrophysics

  • Publication
    INTEGRAL observations of the peculiar BeX System SAX J2103.5+4545
    We present an INTEGRAL data analysis of the X-ray transient SAX J2103.5+4545 during two outbursts detected in December 2002. The INTEGRAL coordinates and error...
  • Publication
    Integrated-light analyses vs. colour-magnitude diagrams. II. Leo A: an extremely young dwarf in the Local Group
    Context. Most of our knowledge of the stellar component of galaxies is based on the analysis of distant systems and comes from integrated light data. It is...
  • Publication
    Inter-network magnetic fields observed with sub-arcsec resolution
    We analyze a time sequence of Inter-Network (IN) magnetograms observed at the solar disk center. Speckle reconstruction techniques provide a good spatial...
  • Publication
    Inter-Network magnetic fields observed during the minimum of the solar cycle
    We analyze a time series of high angular resolution magnetograms of quiet Sun Inter-Network (IN) magnetic fields. These magnetograms have a spatial resolution...
  • Publication
    Interaction of solar jets with filaments: Triggering of large-amplitude filament oscillations
    Context. Large-amplitude oscillations (LAOs) are often detected in filaments. Using multi-wavelength observations, their origin can be traced back to the...
  • Publication
    Interactions between large-scale radio structures and gas in a sample of optically selected type 2 quasars
    Context. The role of radio mode feedback in non radio-loud quasars needs to be explored in depth to determine its true importance. Its effects can be identified...
  • Publication
    Intermittent solar activity by an on-off dynamo.
    We show that the alteration between intervals of cyclic activity and grand minima like the Maunder minimum in the 17th century, which is characteristic for the...
  • Publication
    Internal dynamics of Abell 1240: a galaxy cluster with symmetric double radio relics
    Context: The mechanisms giving rise to diffuse radio emission in galaxy clusters, and in particular their connection with cluster mergers, are still debated...
  • Publication
    Internal dynamics of Abell 2254: a merging galaxy cluster with a clumpy, diffuse radio emission
    Context. The mechanisms giving rise to diffuse radio emission in galaxy clusters and, in particular, their connection with cluster mergers are still being...