Astrophysical: Black hole physics

  • Publication
    Polarized infrared emission from X-ray binary jets
    Near-infrared (NIR) and optical polarimetric observations of a selection of X-ray binaries are presented. The targets were observed using the Very Large...
  • Publication
    Polarized synchrotron emission in quiescent black hole X-ray transients
    We present near-infrared polarimetric observations of the black hole X-ray binaries Swift J1357.2-0933 and A0620-00. In both sources, recent studies have...
  • Publication
    Position-velocity diagrams of ionized gas in the inner regions of disk galaxies
    We use long-slit spectroscopy along the major axis of a sample of 23 nearby disk galaxies to study the kinematic properties of the ionized-gas component in...
  • Publication
    Primary Black Hole Spin in OJ 287 as Determined by the General Relativity Centenary Flare
    OJ 287 is a quasi-periodic quasar with roughly 12 year optical cycles. It displays prominent outbursts that are predictable in a binary black hole model. The...
  • Publication
    Probing the roles of orientation and multiscale gas distributions in shaping the obscuration of active galactic nuclei through cosmic time
    The origin of obscuration in active galactic nuclei (AGNs) is still an open debate. In particular, it is unclear what drives the relative contributions to the...
  • Publication
    Probing the roles of orientation and multiscale gas distributions in shaping the obscuration of active galactic nuclei through cosmic time
    The origin of obscuration in active galactic nuclei (AGNs) is still an open debate. In particular, it is unclear what drives the relative contributions to the...
  • Publication
    Radio observations of extreme ULXs: revealing the most powerful ULX radio nebula ever or the jet of an intermediate-mass black hole?
    The most extreme ultraluminous X-ray sources (ULXs), with LX > 5 × 1040 erg s-1, are amongst the best candidates for hosting intermediate-mass black holes...
  • Publication
    Rapid optical and X-ray timing observations of GX 339-4: flux correlations at the onset of a low/hard state
    We present the discovery of optical/X-ray flux correlations on rapid time-scales in the low/hard state of the Galactic black hole GX339-4. The source had...
  • Publication
    Recovery of the X-ray polarisation of Swift J1727.8−1613 after the soft-to-hard spectral transition
    We report on the detection of X-ray polarisation in the black-hole X-ray binary Swift J1727.8−1613 during its dim hard spectral state by the Imaging X-ray...