Astrophysical: Gravitational lensing

  • Publication
    Microlensing of Quasar Broad Emission Lines: Constraints on Broad Line Region Size
    We measure the differential microlensing of the broad emission lines between 18 quasar image pairs in 16 gravitational lenses. We find that the broad emission...
  • Publication
    Microlensing of Quasar Ultraviolet Iron Emission
    We measure the differential microlensing of the UV Fe II and Fe III emission line blends between 14 quasar image pairs in 13 gravitational lenses. We find that...
  • Publication
    Microlensing of the broad emission lines in 27 gravitationally lensed quasars. Broad line region structure and kinematics
    Aims: We aim to study the structure and kinematics of the broad line region (BLR) of a sample of 27 gravitationally lensed quasars with up to five different...
  • Publication
    Microlensing Results Challenge the Core Accretion Runaway Growth Scenario for Gas Giants
    We compare the planet-to-star mass-ratio distribution measured by gravitational microlensing to core accretion theory predictions from population synthesis...
  • Publication
    Microlensing toward Crowded Fields: Theory and Applications to M31
    We present a comprehensive treatment of the pixel-lensing theory and apply it to lensing experiments and their results toward M31. Using distribution functions...
  • Publication
    Microlensing-based Estimate of the Mass Fraction in Compact Objects in Lens Galaxies
    We estimate the fraction of mass that is composed of compact objects in gravitational lens galaxies. This study is based on microlensing measurements (obtained...
  • Talk
    Microlensing-based search for extragalactic MACHOs
    In this talk we first make a review on gravitational lensing and microlensing as an introduction, followed by a discussion on the most recent work of our group...
  • Publication
    Microlensing-based Studies of the Unresolved Structure of AGNs and the Composition of Lensing Galaxies
    Multiple images of quasars formed by gravitational lensing are typically seen through the lensing galaxy. The granulation of the galaxy in stars or other...
  • Talk
    Microlensing: No Machos, but Smooth Dark Matter (4)