Astrophysical: Gravitational lensing

  • Talk
    Dark Matter in Clusters and Large Scale Structure: The galaxy-mass correlation in cosmology (5)
  • Publication
    Dark Matter Mass Fraction in Lens Galaxies: New Estimates from Microlensing
    We present a joint estimate of the stellar/dark matter mass fraction in lens galaxies and the average size of the accretion disk of lensed quasars based on...
  • Publication
    Deciphering Quasar Millilensing How to Distinguish Between Dark and Luminous Lenses
    Dwarf-galaxy sized dark matter halos may be detectable when a bright background source is gravitationally lensed on scales of milliarcseconds. Such effects can...
  • Publication
    DES Y3 cosmic shear down to small scales: Constraints on cosmology and baryons
    We present the first analysis of cosmic shear measured in DES Y3 that employs the entire range of angular scales in the data. To achieve this, we built upon...
  • Publication
    Detection of Chromatic Microlensing in Q 2237 + 0305 A
    We present narrowband images of the gravitational lens system Q 2237 + 0305 made with the Nordic Optical Telescope in eight different filters covering the...
  • Publication
    Detection of the 2175 Å Extinction Feature at z = 0.83
    We determine the extinction curve in the zl=0.83 lens galaxy of the gravitational lens SBS 0909+532 from the wavelength dependence of the flux ratio between the...
  • Publication
    Detection of very high energy gamma-ray emission from the gravitationally lensed blazar QSO B0218+357 with the MAGIC telescopes
    Context. QSO B0218+357 is a gravitationally lensed blazar located at a redshift of 0.944. The gravitational lensing splits the emitted radiation into two...
  • Publication
    Determination of the properties of the central engine in microlensed QSOs
    We study a recently observed gravitational microlensing peak in the V-band light curve of Q2237+0305A using a relatively simple physical model, but one that is...
  • Publication
    Discovery of a Lensed Ultrabright Submillimeter Galaxy at z = 2.0439
    We report an ultrabright lensed submillimeter galaxy (SMG) at z = 2.0439, WISE J132934.18+224327.3, identified as a result of a full-sky cross-correlation of...