Astrophysical: Quasars

  • Publication
    Microlensing of Quasar Ultraviolet Iron Emission
    We measure the differential microlensing of the UV Fe II and Fe III emission line blends between 14 quasar image pairs in 13 gravitational lenses. We find that...
  • Publication
    Microlensing of the broad emission lines in 27 gravitationally lensed quasars. Broad line region structure and kinematics
    Aims: We aim to study the structure and kinematics of the broad line region (BLR) of a sample of 27 gravitationally lensed quasars with up to five different...
  • Publication
    Microlensing-based Studies of the Unresolved Structure of AGNs and the Composition of Lensing Galaxies
    Multiple images of quasars formed by gravitational lensing are typically seen through the lensing galaxy. The granulation of the galaxy in stars or other...
  • Talk
    Microlensing: Quasar Size and Luminosity Profile (2)
  • Talk
    Microvariability detection in quasars: An astrostatistical problem
    Microvariations probe the physics and internal structure of quasars. Unpredictability and small flux variations make this phenomenon elusive and difficult to...
  • Publication
    Mid-infrared sources in the ELAIS Deep X-ray Survey
    We present a cross-correlation of the European Large Area Infrared Space Observatory (ISO) survey (ELAIS) with the ELAIS Deep X-ray Survey of the N1 and N2...
  • Publication
    Mid-infrared spectroscopy of infrared-luminous galaxies at z ~ 0.5-3
    We present results on low-resolution mid-infrared (MIR) spectra of 70 IR-luminous galaxies obtained with the infrared spectrograph (IRS) onboard Spitzer. We...
  • Publication
    MiNDSTEp differential photometry of the gravitationally lensed quasars WFI 2033-4723 and HE 0047-1756: microlensing and a new time delay
    Aims: We present V and R photometry of the gravitationally lensed quasars WFI 2033-4723 and HE 0047-1756. The data were taken by the MiNDSTEp collaboration with...
  • Publication
    Molecular gas excitation and outflow properties of obscured quasars at z ∼ 0.1
    To investigate the impact of winds and jets with a low to moderate power on the cold molecular gas reservoirs of active galactic nuclei (AGN), we present...