Astrophysical: Black holes

  • Publication
    A feasibility study on the photometric detection of quiescent black hole X-ray binaries
    We investigate the feasibility of detecting quiescent black hole X-ray binaries using optical photometric techniques. To test this, we employ a combination of r...
  • Publication
    A FWHM–K2 Correlation in Black Hole Transients
    We compare {{{H}}}α emission profiles of 12 dynamically confirmed black holes (BHs) and 2 neutron star X-ray transients (SXTs) in quiescence with those of a...
  • Talk
    A multiwavelength look into the common evolution of luminous quasars and their host-galaxies
    This talk will be dedicated to luminous (LBol~1E47 erg/s), high-redshift quasars, which are ideal targets to investigate (i) feedback from SMBHs, and (ii) the...
  • Publication
    A search for optical and near-infrared counterparts of the compact binary merger GW190814
    We report on our observing campaign of the compact binary merger GW190814, detected by the Advanced LIGO and Advanced Virgo detectors on 2019 August 14. This...
  • News
    A study shows the unexpected effect of black holes beyond their own galaxies
    At the heart of almost every sufficiently massive galaxy there is a black hole whose gravitational field, although very intense, affects only a small region...
  • Publication
    Accretion and outflow in V404 Cyg
    We study the optical evolution of the 2015 outburst in V404 Cyg, with emphasis on the peculiar nebular phase and subsequent decay to quiescence. From the decay...
  • Publication
    Addendum: Optical re-brightening of the black hole transient XTE J1752-223
    We observed the black hole candidate XTE J1752-223 (ATel #2258) with the William Herschel Telescope (WHT) and the ACAM imager/spectrograph at the Observatorio...
  • Publication
    Amendment to ATel 1859: CXOM31 J004245.9+411036 is Previously Reported XMMU J004245.9+411036
    The object CXOM31 J004245.9+411036, reported as a new X-ray source in ATel #1859 from M31 Chandra observations, is the previously reported XMMU J004245.9+411036...
  • 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...