Astrophysical: Dark matter

  • Talk
    Magnetic fields and the outer rotation curve of M31
    Recent observations of the rotation curve of M31 show a rise of the outer part that cannot be understood in terms of standard dark matter models or...
  • Publication
    Mass-to-light ratios from the fundamental plane of spiral galaxy discs
    The best-fitting two-dimensional plane within the three-dimensional space of spiral galaxy disc observables (rotational velocity vrot, central disc surface...
  • Publication
    Massive relic galaxies prefer dense environments
    We study the preferred environments of z ˜ 0 massive relic galaxies (M⋆ ≳ 1010 M⊙ galaxies with little or no growth from star formation or mergers since z ˜ 2)...
  • Talk
    Matter-antimatter sourced dark matter
    Cosmological and astrophysical e xperimental data demark a large share of the limits of our knowledge in fundamental physics. I'll review two pieces of evidence...
  • 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
    Microlensing events of the LMC are better explained by stars within the LMC than by MACHOs
    The recently reported microlensing events of the Large Magellanic Cloud (LMC) have caused much excitement, and have been interpreted as due to 'dark objects'...
  • 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: No Machos, but Smooth Dark Matter (4)