Astrofísicas: Acreción

  • Publicación
    The Optical Counterpart of the Accreting Millisecond Pulsar SAX J1808.4-3658 in Outburst: Constraints on the Binary Inclination
    We present multiband optical/IR photometry of V4580 Sgr, the optical counterpart of the accretion-powered millisecond pulsar SAX J1808.4-3658, taken during the...
  • Publicación
    The optical counterpart of the bright X-ray transient Swift J1745-26
    We present a 30-day monitoring campaign of the optical counterpart of the bright X-ray transient Swift J1745-26, starting only 19 min after the discovery of the...
  • Publicación
    The optical counterparts of accreting millisecond X-ray pulsars during quiescence
    Context: Eight accreting millisecond X-ray pulsars (AMXPs) are known to date. Although these systems are well studied at high energies, very little information...
  • Publicación
    The Optical Light Curves of XTE J2123-058. III. The Mass of the Binary Components and the Structure of the Quiescent Accretion Disk
    We present optical photometry of XTE J2123-058 taken in 1999 and 2000, during its quiescent state. The dominant feature of our R-band light curve is the...
  • Publicación
    The orbital period of the recurrent nova V2487 Oph revealed
    We present the first reliable determination of the orbital period of the recurrent nova V2487 Oph (Nova Oph 1998). We derived a value of 0.753 ± 0.016 d (18.1 ±...
  • Publicación
    The orbital period of V458 Vulpeculae, a post-double common-envelope nova
    We present time-resolved optical spectroscopy of V458 Vulpeculae (Nova Vul 2007 No. 1) spread over a period of 15 months starting 301d after its discovery. Our...
  • Publicación
    The orbital period, black hole mass, and distance to the X-ray transient GRS 1716-249 ( =N Oph 93)
    We present evidence for a 0.278(8) d ( =6.7 h) orbital period in the X-ray transient GRS 1716-249 (=N Oph 93), based on a superhump modulation detected during...
  • Publicación
    The origin of the tilted disc in the low-mass X-ray binary GR Mus (XB 1254-690)
    We present photometric and spectroscopic observations of the low-mass X-ray binary GR Mus (XB 1254-690), and find strong evidence for the presence of a negative...
  • Publicación
    The outburst radial velocity curve of X-ray Nova Scorpii 1994 (= GRO J1655-40): a reduced mass for the black hole?
    We present a re-analysis of the outburst radial velocity data for X-ray Nova Scorpii 1994. Using a model based on X-ray heating of the secondary star, we...