Astrofísicas: Materia oscura

  • Publicación
    Local approximations to non-linear evolution of density fluctuations
    The way in which the evaluation of any moment of the mass distribution, as given by the Zeldovich (1970) approximation, may be reduced to the computation of an...
  • Publicación
    LoVoCCS. II. Weak Lensing Mass Distributions, Red-sequence Galaxy Distributions, and Their Alignment with the Brightest Cluster Galaxy in 58 Nearby X-Ray-luminous Galaxy Clusters
    The Local Volume Complete Cluster Survey is an ongoing program to observe nearly a hundred low-redshift X-ray-luminous galaxy clusters (redshifts 0.03 < z < 0...
  • Charla
    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...
  • Noticia
    Más cerca de resolver el misterio de las galaxias ultradifusas
    Un estudio del Instituto de Astrofísica de Canarias (IAC), liderado por la investigadora Nushkia Chamba y los investigadores Ignacio Trujillo y Johan H. Knapen...
  • Publicación
    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...
  • Publicación
    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)...
  • Charla
    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...
  • Charla
    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...
  • Publicación
    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'...