Astrophysical: Quasars

  • Publication
    New VR Magnification Ratios of QSO 0957+561
    We present VR magnification ratios of QSO 0957+561 that are inferred from the GLITP light curves of Q0957+561A and new frames taken with the 2.56 m Nordic...
  • Publication
    New windows to the universe; Proceedings of the Eleventh IAU European Regional Astronomy Meeting, Universidad de La Laguna, Spain, July 3-8, 1989. Part III
    Topics discussed in this issue include active galaxies and cosmology, interstellar and intergalactic medium, and astronomical instrumentation. Papers are...
  • Publication
    Nitrogen Abundances in Damped Lyalpha Galaxies
    Nitrogen lines of the N I lambda1134 and lambda1200 multiplets in the damped Lyalpha (DLA) galaxies at z_abs = 2.309, 2.827, and 3.025 toward the QSOs 0100+1300...
  • Publication
    No Evolution in the MBH-M*,total Relation Over the Last 9 Gyrs
    We investigate 10 QSO host galaxies at 1
  • Talk
    Non-evolution of black hole mass/luminosity ratio, superluminal motions and other pending problems in QSOs
    1) López-Corredoira & Gutiérrez (2012, RAA, 12, 249): Extremely luminous QSOs exist at high redshift but they are absent at low redshift. Our analyses show that...
  • Publication
    Obscuration beyond the nucleus: infrared quasars can be buried in extreme compact starbursts
    In the standard quasar model, the accretion disc obscuration is due to the canonical dusty torus. Here, we argue that a substantial part of the quasar...
  • Publication
    Observations of the Lensed Quasar Q2237+0305 with CanariCam at GTC
    We present new mid-IR observations of the quadruply lensed quasar Q2237+0305 taken with CanariCam on the Gran Telescopio Canarias. Mid-IR emission by hot dust...
  • Publication
    OJ 287 and the predicted fade of 1998
    There were predictions that blazar OJ 287 should have faded in late 1997 or early 1998. The observational background for these predictions is the sudden fade of...
  • Publication
    On the Connection of the Apparent Proper Motion and the VLBI Structure of Compact Radio Sources
    Many of the compact extragalactic radio sources that are used as fiducial points to define the celestial reference frame are known to have proper motions...