Astrofísicas: Materia oscura

  • Charla
    Is Dark Matter the most valid explanation for the mass which is apparently missing in the Universe?
    Two main families of models explain that, at least in appearance, something like 90% of the mass of the Universe is still undetected. One (supported by an...
  • Charla
    Large scale structures and galaxy evolution in the COSMOS Survey
    The COSMOS survey is the largest high redshift galaxy evolution survey ever done -- imaging 2 square degrees with all major space-based and ground based...
  • Publicación
    Limiting the Abundance of LIGO/Virgo Black Holes with Microlensing Observations of Quasars of Finite Size
    We present a simple but general argument that strongly limits the abundance of primordial black holes (PBHs) (or other unknown population of compact objects)...
  • 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)...