Astrophysical: Black hole physics

  • Publication
    The ultraluminous X-ray source NGC 1313 X-2. Its optical counterpart and environment
    NGC 1313 X-2 is one of the brightest ultraluminous X-ray sources in the sky, at both X-ray and optical wavelengths; therefore, quite a few studies of available...
  • Publication
    The X-ray transient XTE J1859 + 226 in outburst and quiescence
    We present optical photometry and spectroscopy of the X-ray transient XTE J1859+226, obtained during outburst and its subsequent decay to quiescence. Both the X...
  • Publication
    Towards a dynamical mass of the ultraluminous X-ray source NGC 5408 X-1
    We obtained multi-epoch Very Large Telescope optical spectroscopic data in 2011 and 2012 on the ultraluminous X-ray source NGC 5408 X-1. We confirm that the He...
  • Publication
    Tracing the Reverberation Lag in the Hard State of Black Hole X-Ray Binaries
    We report results obtained from a systematic analysis of X-ray lags in a sample of black hole X-ray binaries, with the aim of assessing the presence of...
  • Publication
    Unveiling recurrent jets of the ULX Holmberg II X-1: evidence for a massive stellar-mass black hole?
    We report on the discovery of an apparent triple radio structure hidden inside the radio bubble of the ultraluminous X-ray source Holmberg II X-1. The...
  • Publication
    Very Large Telescope/X-shooter Spectroscopy of the Candidate Black Hole X-Ray Binary MAXI J1659-152 in Outburst
    We present the optical to near-infrared spectrum of MAXI J1659-152 during the onset of its 2010 X-ray outburst. The spectrum was obtained with X-shooter on the...
  • Publication
    VLT Diffraction-limited Imaging and Spectroscopy in the NIR: Weighing the Black Hole in Centaurus A with NACO
    We present high spatial resolution near-infrared spectra and images of the nucleus of Centaurus A (NGC 5128) obtained with NAOS-CONICA at the VLT. The adaptive...
  • Publication
    X-ray spectral and timing evolution of MAXI J1727-203 with NICER
    We present a detailed X-ray spectral and variability study of the full 2018 outburst of MAXI J1727-203 using NICER observations. The outburst lasted...
  • Publication
    X-ray Spectral State is not Correlated with Luminosity in Holmberg II X-1
    The ultraluminous X-ray source (ULX) Holmberg II X-1 has been observed over four months in 2009/2010 by the Swift observatory. The source luminosity varied by a...