Astrophysical: Quasars

  • Publication
    Black hole masses for 14 gravitationally lensed quasars
    Aims: We have estimated black hole masses (M BH) for 14 gravitationally lensed quasars using Balmer lines; we also provide estimates based on MgII and CIV...
  • Publication
    Black hole virial masses from single-epoch photometry. The miniJPAS test case
    Context. Precise measurements of black hole masses are essential to understanding the coevolution of these sources and their host galaxies. Aims: We develop a...
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    Black hole-galaxy scaling relation evolution from Z̃2.5: Simulated observations with HARMONI on the ELT
    We present preliminary results on the potential of HARMONI, the first light integral field spectrograph for the ELT, to explore the evolution of central super...
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    Broad absorption line quasars with redshifted troughs: high-velocity infall or rotationally dominated outflows?
    We report the discovery in the Sloan Digital Sky Survey (SDSS) and the SDSS-III Baryon Oscillation Spectroscopic Survey of 17 broad absorption line (BAL)...
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    BVRI Photometry of QSO 0957+561A, B: Observations, New Reduction Method, and Time Delay
    CCD observations of the gravitational lens system Q0957+561A, B in the BVRI bands are presented in this paper. The observations, taken with the 82 cm IAC-80...
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    Capturing dual AGN activity and kiloparsec-scale outflows in IRAS 20210+1121
    The most standard scenario for the evolution of massive galaxies across cosmic time assumes a correspondence based on the interplay between active galactic...
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    Catalog of Long-term Transient Sources in the First 10 yr of Fermi-LAT Data
    We present the first Fermi Large Area Telescope (LAT) catalog of long-term γ-ray transient sources (1FLT). This comprises sources that were detected on monthly...
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    CCD monitoring of quasars and BL Lacertae objects
    Johnson B CCD photometry of quasars and other active nuclei were obtained with the 1-m and 2.5-m reflectors of the Roque de los Muchachos Observatory in the...
  • Publication
    CCD monitoring of the X-ray variable quasar OX 169
    Three nights of broadband filter monitoring of the OX 169 variable X-ray quasar using a GEC-type CCD have yielded a 0.005 mag rms precision in the R band. Rapid...