Astrophysical: Accretion

  • Publication
    A multiwavelength view of the outflowing short-period X-ray binary UW CrB
    Previous work detected transient ultraviolet outflow features for the short-period (P $_{\mathrm{orb}}{\approx }111$ min), low-mass X-ray binary (LMXB) UW CrB...
  • Publication
    A new radio census of neutron star X-ray binaries
    We report new radio observations of a sample of 36 neutron star (NS) X-ray binaries, more than doubling the sample in the literature observed at current-day...
  • Publication
    A novel black hole mass scaling relation based on coronal gas, and its dependence with the accretion disc
    Using bona-fide black hole (BH) mass estimates from reverberation mapping and the line ratio [Si VI] 1.963$\rm{\mu m}$/Brγ broad as tracer of the AGN ionizing...
  • Publication
    A possible black hole in the γ-ray microquasar LS 5039
    The population of high-energy and very high-energy γ-ray sources, detected with EGRET and the new generation of ground-based Cherenkov telescopes, forms a...
  • Publication
    A possible shutting-down event of mass accretion in an active galactic nucleus at z ∼ 1.8
    We present the discovery of a large gradual apparent fading event in optical and near-infrared wavelengths in a quasar at $z=1.767$ by a factor of ${\sim}20\!-\...
  • Publication
    A rapid optical and X-ray timing study of the neutron star X-ray binary Swift J1858.6-0814
    We present a rapid timing analysis of optical (HiPERCAM and ULTRACAM) and X-ray (NICER) observations of the X-ray transient Swift J1858.6-0814 during 2018 and...
  • Publication
    A refined dynamical mass for the black hole in the X-ray transient XTE J1859+226
    We present two contiguous nights of simultaneous time-resolved Gran Telescopio Canarias spectroscopy and William Herschel Telescope photometry of the black hole...
  • Publication
    A return to strong radio flaring by Circinus X-1 observed with the Karoo Array Telescope test array KAT-7
    Circinus X-1 is a bright and highly variable X-ray binary which displays strong and rapid evolution in all wavebands. Radio flaring, associated with the...
  • Publication
    A Robust Determination of the Size of Quasar Accretion Disks Using Gravitational Microlensing
    Using microlensing measurements for a sample of 27 image pairs of 19 lensed quasars we determine a maximum likelihood estimate for the accretion disk size of an...