Astrofísicas: Lente gravitacional

  • Publicación
    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...
  • Publicación
    SDSS J0909+4449: A large-separation strongly lensed quasar at z ˜ 2.8 with three images
    We report the discovery of SDSS J0909+4449, an exceptional system consisting of a quasar at z = 2.788 strongly lensed by a group of galaxies at z ˜ 0.9 into...
  • Publicación
    Serendipitous discovery of a strong-lensed galaxy in integral field spectroscopy from MUSE
    2MASX J04035024-0239275 is a bright red elliptical galaxy at redshift 0.0661 that presents two extended sources at 2″ to the north-east and 1″ to the south-west...
  • Publicación
    SHARDS Frontier Fields: Physical Properties of a Low-mass Lyα Emitter at z = 5.75
    We analyze the properties of a multiply imaged Lyα (Lyα) emitter at z = 5.75 identified through SHARDS Frontier Fields intermediate-band imaging of the Hubble...
  • Publicación
    Short time-scale fluctuations in the difference light curves of QSO 0957+561A,B: microlensing or noise?
    From optical R-band data of the double quasar QSO 0957+561A,B, we made two new difference light curves (with an overlap of about 330d between the time-shifted...
  • Publicación
    Size of the Accretion Disk in the Graviationally Lensed Quasar SDSS J1004+4112 from the Statistics of Microlensing Magnifications
    We present eight monitoring seasons of the four brightest images of the gravitational lens SDSS J1004+4112 observed between 2003 December and 2010 October...
  • Publicación
    Spectroscopic Mass and Host-star Metallicity Measurements for Newly Discovered Microlensing Planet OGLE-2018-BLG-0740Lb
    We report the discovery of the microlensing planet OGLE-2018-BLG-0740Lb. The planet is detected with a very strong signal of Δχ 2 ∼ 4630, but the interpretation...
  • Publicación
    Spectroscopy and polarimetry of the gravitationally lensed quasar SDSS J1004+4112 with the 6m SAO RAS telescope
    Context. We present new spectroscopic and polarimetric observations of the gravitational lens SDSS J1004+4112 taken with the 6 m telescope of the Special...
  • Publicación
    Spectroscopy of the Lens Galaxy of Q0957+561A,B: Implications of a Possible Central Massive Dark Object
    We present new long-slit William Herschel Telescope spectroscopic observations of the lens galaxy G1 associated with the double-imaged QSO 0957+561A,B. The...