Astrophysical: Accretion

  • Publication
    The FR II Broad-Line Seyfert 1 Galaxy: PKS J1037-2705
    In this article we demonstrate that PKS J1037-2705 has a weak accretion flow luminosity, well below the Seyfert 1/QSO dividing line, weak broad emission lines...
  • Publication
    The frequency of gaseous debris discs around white dwarfs
    A total of 1-3 per cent of white dwarfs are orbited by planetary dusty debris detectable as infrared emission in excess above the white dwarf flux. In a rare...
  • Publication
    The Gaia-ESO Survey: A new diagnostic for accretion and outflow activity in the young cluster NGC 2264
    Context. NGC 2264 is a young cluster whose accretion properties can be investigated in detail by taking advantage of the FLAMES data in the context of the Gaia...
  • Publication
    The global X-ray burst behaviour of KS 1731-260
    An overview is given of the type I X-ray burst properties of the transient KS 1731-260. These characteristics appear to be proto-typical for all type I X-ray...
  • Publication
    The Halo Black Hole X-Ray Transient XTE J1118+480
    Optical spectra were obtained of the optical counterpart of the high-latitude (b~=62deg) soft X-ray transient XTE J1118+480 near its quiescent state (R~=18.3)...
  • Publication
    The influence of microlensing on spectral line shapes generated by a relativistic accretion disc
    We study the influence of gravitational microlensing on the spectral line profiles originating from a relativistic accretion disc. Using the Chen & Halpern...
  • Publication
    The influence of microlensing on the shape of the AGN Fe Kalpha line
    We study the influence of gravitational microlensing on the AGN Fe Kalpha line confirming that unexpected enhancements recently detected in the iron line of...
  • Publication
    The intermediate polar cataclysmic variable GK Persei 120 years after the nova explosion: a first dynamical mass study
    We present a dynamical study of the intermediate polar and dwarf nova cataclysmic variable GK Persei (Nova Persei 1901) based on a multisite optical...
  • Publication
    The isotopic ^6Li/^7Li ratio in Centaurus X-4 and the origin of Li in X-ray binaries
    Context: Cool stars, companions to compact objects, are known to show Li abundances which are high compared to field stars of the same spectral type, which are...