Astrophysical: Quasars

  • Publication
    Resolved Dust Emission in a Quasar at z = 3.65
    We present submillimeter observations of the z= 3.653 quasar SDSS 160705+533558 together with data in the optical and infrared. The object is unusually bright...
  • Publication
    Resolving the Innermost Region of the Accretion Disk of the Lensed Quasar Q2237+0305 through Gravitational Microlensing
    We study three high magnification microlensing events, generally recognized as probable caustic crossings, in the optical light curves of the multiply imaged...
  • Publication
    Revealing the inner workings of the lensed quasar SDSS J1339+1310: Insights from microlensing analysis
    Aims. We aim to unveil the structure of the continuum and broad-emission line (BEL) emitting regions in the gravitationally lensed quasar SDSS J1339+1310 by...
  • Publication
    Revealing the structure of the lensed quasar Q 0957+561. I. Accretion disk size
    Aims: We aim to use signatures of microlensing induced by stars in the foreground lens galaxy to infer the size of the accretion disk in the gravitationally...
  • Publication
    Revealing the structure of the lensed quasar Q 0957+561. II. Supermassive black hole mass via gravitational redshift
    Aims: We intend to use the impact of microlensing on the Fe III λλ2039−2113 emission line blend along with a measure of its gravitational redshift to estimate...
  • Publication
    Revealing the structure of the lensed quasar Q 0957+561. III. Constraints on the size of the broad-line region
    Aims: Our aim is to examine the size, kinematics, and geometry of the broad-line region (BLR) in the double-lensed quasar Q 0957+561 by analyzing the impact of...
  • Publication
    Rotating discs and non-kinematic double peaks
    Double-peaked line profiles are commonly considered a hallmark of rotating discs, with the distance between the peaks a measure of the rotation velocity...
  • Publication
    RXJ 0921+4529: A Binary Quasar or a Gravitational Lens?
    We report the new spectroscopic observations of the gravitational lens RXJ 021+4529 with the multi-mode focal reducer SCORPIO of the SAO RAS 6 m telescope. The...