Astrophysical: Quasars

  • Publication
    Testing the Standard Model of Active Galactic Nuclei through Quasar Variability
    The standard model of Active Galactic Nuclei (AGNs) predicts that Type 2 AGNs and Type 1 AGNs only differ in the orientation of a dust torus, which does or does...
  • Publication
    The 11 Year Period in OJ 287 Revisited: Is It a True Long-Enduring Period?
    The case of the possible 11 yr periodicity in the historical light curve of OJ 287 over a century of observations is examined critically largely independently...
  • Publication
    The AGN contribution to mid-infrared surveys. X-ray counterparts of the mid-IR sources in the Lockman Hole and HDF-N
    We provide constraints on the AGN contribution to the mid-IR extragalactic background light from a correlation analysis of deep X-ray and mid-IR observations in...
  • Publication
    The ALHAMBRA survey: Discovery of a faint QSO at z = 5.41
    Aims: We aim to illustrate the potentiality of the Advanced Large, Homogeneous Area, Medium-Band Redshift Astronomical (ALHAMBRA) survey to investigate the high...
  • Publication
    The Average Size and Temperature Profile of Quasar Accretion Disks
    We use multi-wavelength microlensing measurements of a sample of 10 image pairs from 8 lensed quasars to study the structure of their accretion disks. By using...
  • Publication
    The beamed jet and quasar core of the distant blazar 4C 71.07
    The object 4C 71.07 is a high-redshift blazar whose spectral energy distribution shows a prominent big blue bump and a strong Compton dominance. We present the...
  • Publication
    The Bright γ-ray Flare of 3C 279 in 2015 June: AGILE Detection and Multifrequency Follow-up Observations
    We report the AGILE detection and the results of the multifrequency follow-up observations of a bright γ-ray flare of the blazar 3C 279 in 2015 June. We use...
  • Publication
    The Bulk of the Black Hole Growth Since z ~ 1 Occurs in a Secular Universe: No Major Merger-AGN Connection
    What is the relevance of major mergers and interactions as triggering mechanisms for active galactic nuclei (AGNs) activity? To answer this long-standing...
  • Publication
    The central parsec of NGC 3783: a rotating broad emission line region, asymmetric hot dust structure, and compact coronal line region
    Using VLTI/GRAVITY and SINFONI data, we investigate the subparsec gas and dust structure around the nearby type 1 active galactic nucleus (AGN) hosted by NGC...