Astrophysical: Accretion

  • Publication
    Observational constraints on the powering mechanism of transient relativistic jets
    We revisit the paradigm of the dependence of jet power on black hole (BH) spin in accreting BH systems. In a previous paper, we showed that the luminosity of...
  • Publication
    Observations of the 599 Hz Accreting X-Ray Pulsar IGR J00291+5934 during the 2004 Outburst and in Quiescence
    We report on optical and near-infrared observations obtained during and after the 2004 December discovery outburst of the X-ray transient and accretion-powered...
  • Publication
    Observations of the Lensed Quasar Q2237+0305 with CanariCam at GTC
    We present new mid-IR observations of the quadruply lensed quasar Q2237+0305 taken with CanariCam on the Gran Telescopio Canarias. Mid-IR emission by hot dust...
  • Publication
    Observations of the quiescent X-ray transients GRS 1124-684 (=GUMus) and Cen X-4 (=V822Cen) taken with ULTRACAM on the VLT
    We present high time-resolution multicolour optical observations of the quiescent X-ray transients GRS 1124-684 (=GUMus) and Cen X-4 (=V822Cen) obtained with...
  • Publication
    On the Cooling Tails of Thermonuclear X-ray Bursts: The IGR J17480-2446 Link
    The neutron star transient and 11 Hz X-ray pulsar IGR J17480-2446, recently discovered in the globular cluster Terzan 5, showed unprecedented bursting activity...
  • Publication
    On the mass of the compact object in GRO J0422+32
    We report the detection of the secondary star spectrum in the hard X-ray transient GRO J0422+32 during its lowest quiescent state. From the amplitude of the...
  • Publication
    On the mass of the neutron star in Cyg X-2
    We present new high-resolution spectroscopy of the low-mass X-ray binary Cyg X-2, which enables us to refine the orbital solution and rotational broadening of...
  • Publication
    On the masses and evolutionary status of the black hole binary GX 339-4: a twin system of XTE J1550-564?
    We apply the K-correction to the black hole low-mass X-ray binary (LMXB) GX 339-4 which implies MX >= 6Msolar by only assuming that the companion is more...
  • Publication
    On the simultaneous optical and near-infrared variability of pre-main sequence stars
    For a complete understanding of the physical processes causing the photometric variability of pre-main sequence systems, simultaneous optical and near-IR...