Astrophysical: Accretion

  • Publication
    Optical and X-ray correlations during the 2015 outburst of the black hole V404 Cyg
    We present a serendipitous multiwavelength campaign of optical photometry simultaneous with Integral X-ray monitoring of the 2015 outburst of the black hole...
  • Publication
    Optical Emission of the Ultraluminous X-Ray Source NGC 5408 X-1: Donor Star or Irradiated Accretion Disk?
    We obtained three epochs of simultaneous Hubble Space Telescope (HST)/Wide Field Camera 3 and Chandra observations of the ultraluminous X-ray source (ULX) NGC...
  • Publication
    Optical nebular emission following the most luminous outburst of Aquila X-1
    Aquila X-1 is a prototypical neutron star low mass X-ray binary and one of the most studied X-ray transients. We present optical spectroscopy obtained with the...
  • Publication
    Optical Properties of the Ultraluminous X-Ray Source Holmberg IX X-1 and Its Stellar Environment
    Holmberg IX X-1 is an archetypal ultraluminous X-ray source (ULX). Here we study the properties of the optical counterpart and of its stellar environment using...
  • Publication
    Optical spectroscopy and photometry of SAX J1808.4-3658 in outburst
    We present phase resolved optical spectroscopy and photometry of V4580 Sagittarii, the optical counterpart to the accretion powered millisecond pulsar SAX J1808...
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    Optical spectroscopy of 4U 1812-12. An ultra-compact X-ray binary seen through an H II region
    The persistent low-luminosity neutron star X-ray binary 4U 1812-12 is a potential member of the scarce family of ultra-compact systems. We performed deep...
  • Publication
    Optical spectroscopy of flares from the black hole X-ray transient A0620-00 in quiescence
    We present a time-resolved spectrophotometric study of the optical variability in the quiescent soft X-ray transient A0620-00. Superimposed on the double-humped...
  • Publication
    Optical spectroscopy of the low-mass X-ray binary GX9+9
    Phase-resolved medium-resolution VLT spectroscopy of the low-mass X-ray binary GX9+9 has revealed narrow CIII emission lines that move in phase relative to our...
  • Publication
    Optical studies of the X-ray transient XTE J2123-058 - II. Phase-resolved spectroscopy
    We present time-resolved spectroscopy of the soft X-ray transient XTEJ2123-058 in outburst. A useful spectral coverage of 3700-6700Å was achieved spanning two...