Publication type: Non-refereed

  • Publication
    Long-term starspot activity on BH Virginis.
    The authors parameterize the photometric distortion waves in the short-period RS CVn system BH Vir by a dark, circular spot model for the active regions on the...
  • Publication
    Long-term variability in the quiescent X-ray transient V404 Cyg
    We present the results of optical and infrared photometry of the quiescent X-ray transient V404 Cyg during the period 1992-2003.
  • Publication
    Long-term variability of quasi-stellar objects, and their distribution in the Hubble diagram.
    Not Available
  • Publication
    Long-term Variation of Solar Activity by a Dynamo Based on Magnetic Flux Tubes
    We show that cyclic activity and Maunder-type grand minima can be explained by a dynamo driven by the instability of magnetic flux tubes in the overshoot layer...
  • Publication
    Longterm Periodicity in 3C345
    Not Available
  • Publication
    Longterm Variability of Quasistellar Objects and Their Distribution in the Hubble Diagram
    Not Available
  • Publication
    Longterm Variability of Quasistellar Objects and Their Distribution in the Hubble Diagram
    Not Available
  • Publication
    Looking back at Earth, from Earth, during a lunar eclipse
    A lunar eclipse offers a unique opportunity to investigate the Earth's atmosphere. Even at its darkest, the Moon in umbra is still lit by solar photons...
  • Publication
    Looking for Fossil Bacteria in Martian Materials
    The rationale for looking for prokaryote fossils in Martian materials is based on our present understanding of the environmental evolution of that planet in...