Astrophysical: Gravitational microlensing

  • Publication
    One Planet or Two Planets? The Ultra-sensitive Extreme-magnification Microlensing Event KMT-2019-BLG-1953
    We present the analysis of a very high-magnification (A ∼ 900) microlensing event KMT-2019-BLG-1953. A single-lens single-source (1L1S) model appears to...
  • Publication
    Quasar Microlensing Statistics and Flux-ratio Anomalies in Lens Models
    Precise lens modeling is a critical step in time delay studies of multiply imaged quasars, which are key for measuring some important cosmological parameters...
  • Publication
    Single-epoch and Differential Astrometric Microlensing of Quasars
    We propose and discuss a new experimental approach to measure the centroid shift induced by gravitational microlensing in the images of lensed quasars...
  • Publication
    The Impact of the Mass Spectrum of Lenses in Quasar Microlensing Studies. Constraints on a Mixed Population of Primordial Black Holes and Stars
    We show that quasar microlensing magnification statistics induced by a population of point microlenses distributed according to a mass spectrum can be very well...