• Talk
    Matters of gravity
    Contrary to popular belief, on very large distance scales visible matter stubbornly refuses to "fall" according to the laws of gravity of both Newton and...
  • Publication
    Measuring dark matter flows in merging clusters of galaxies
    The Rees-Sciama effect produced in mergers of galaxy clusters is discussed, and an analytical approximation to compute this effect from numerical simulations is...
  • Publication
    Measuring Microlensing Using Spectra of Multiply Lensed Quasars
    We report on a program of spectroscopic observations of gravitationally lensed QSOs with multiple images. We seek to establish whether microlensing is occurring...
  • Publication
    Measuring Supermassive Black Hole Masses: Correlation between the Redshifts of the Fe III UV Lines and the Widths of Broad Emission Lines
    We test the recently proposed black hole mass scaling relationship based on the redshift with respect to the quasar's rest frame of the Fe III λλ2039-2113 line...
  • Publication
    Methodological refinement of the submillimeter galaxy cross-correlation function measurements and their uncertainty estimation
    In this study, we aim to develop a new methodology to estimate the cross-correlation function and uncertainties and apply it to the analysis of magnification...
  • Publication
    Microlensing analysis of 14.5-year light curves in SDSS J1004+4112: Quasar accretion disk size and intracluster stellar mass fraction
    Context. The gravitational lens system SDSS J1004+4112 was the first known example of a quasar lensed by a galaxy cluster. The interest in this system has been...
  • Publication
    Microlensing and Intrinsic Variability of the Broad Emission Lines of Lensed Quasars
    We study the broad emission lines in a sample of 11 gravitationally lensed quasars with at least two epochs of observation to identify intrinsic variability and...
  • Publication
    Microlensing brown-dwarf companions in binaries detected during the 2022 and 2023 seasons
    Aims. Building on previous works to construct a homogeneous sample of brown dwarfs in binary systems, we investigate microlensing events detected by the Korea...
  • Publication
    Microlensing of a Biconical Broad-Line Region
    The influence of microlensing on the profiles of emission lines generated in a biconical geometry is discussed. Microlensing amplification in this anisotropic...