Astrophysical: Accretion

  • 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 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...
  • Publication
    A search for evidence of irradiation in Centaurus X-4 during quiescence
    Aims.We present a study of the neutron star X-Ray Transient Cen X-4. Our aim is to look for any evidence of irradiation of the companion with a detailed...
  • Publication
    A signature of the donor star in the extra-galactic X-ray binary LMCX-2
    Two nights of phase-resolved medium-resolution Very Large Telescope spectroscopy of the extra-galactic low-mass X-ray binary LMCX-2 have revealed a 0.32 +/- 0...