Astrophysical: Accretion

  • Publication
    An atlas of optical continuum and line emission from low-mass X-ray binaries
    We have obtained broad-band optical spectra of a sample of 15 low-mass X-ray binaries (LMXBs) in the range 4000-9000A and fitted them with combinations of...
  • Publication
    An ellipsoidal modulation in Nova Ophiuchi 1977 (=H1705-25=V2107 Oph)
    We report the detection of an orbital, ellipsoidal modulation at a period of 16.8h for V2107 Oph (Nova Ophiuchi 1977, H1705-25), from R-band photometry. From...
  • Publication
    An ellipsoidal modulation in X-ray Nova VELA 1993 (=GRS 1009-45)
    We present the first optical observations of the soft X-ray transient Nova Vela 1993, taken during quiescence in 1995 and 1996. From the R-band photometry with...
  • Publication
    An equatorial outflow in the black hole optical dipper Swift J1357.2-0933
    We present high time resolution optical spectroscopy and imaging of the black hole transient Swift J1357.2-0933 during its 2017 outburst. The light curves show...
  • Publication
    An evolved donor star in the long-period cataclysmic variable HS 0218+3229
    Context: We present time-resolved spectroscopy and photometry of HS 0218+3229, a new long-period cataclysmic variable discovered within the Hamburg Quasar...
  • Publication
    An Evolving Compact Jet in the Black Hole X-Ray Binary MAXI J1836–194
    We report striking changes in the broadband spectrum of the compact jet of the black hole transient MAXI J1836–194 over state transitions during its discovery...
  • Publication
    An infrared FWHM-K<SUB>2</SUB> correlation to uncover highly reddened quiescent black holes
    Among the sample of Galactic transient X-ray binaries (SXTs) discovered to date, about 70 have been proposed as likely candidates to host a black hole. Yet...
  • Publication
    An underlying clock in the extreme flip-flop state transitions of the black hole transient Swift J1658.2-4242
    Aims: Flip-flops are top-hat-like X-ray flux variations, which have been observed in some transient accreting black hole binary systems, and feature...
  • Publication
    An XMM-Newton observation of the neutron star X-ray transient 2S 1803-245 in quiescence
    We observed the neutron star X-ray transient 2S 1803-245 in quiescence with the X-ray satellite XMM-Newton, but did not detect it. An analysis of the X-ray...