Astrofísicas: Materia oscura

  • Publicación
    GD-1 Stellar Stream and Cocoon in the DESI Early Data Release
    We present ∼115 new spectroscopically identified members of the GD-1 tidal stream observed with the 5000-fiber Dark Energy Spectroscopic Instrument (DESI). We...
  • Publicación
    Globular Clusters as a Test for Gravity in the Weak Acceleration Regime
    Non-baryonic Dark Matter (DM) appears in galaxies and other cosmic structures when and only when the acceleration of gravity, as computed considering only...
  • Charla
    Globular clusters systems and their host dark matter halos
    In the Λ-CDM galaxy formation paradigm, the star formation history of a galaxy is coupled to the total mass of its dark matter halo through processes like...
  • Charla
    Gravitational Lensing as Cosmological Tools
    Gravitational lensing is a powerful astrophysical tool which allow us to studythe dark sector of the universe. Some of these applications include from thestudy...
  • Publicación
    Gravitational waves from galaxy encounters
    We discuss the emission of gravitational radiation produced in encounters of dark matter galactic halos. To this aim we perform a number of numerical...
  • Publicación
    Growing a `cosmic beast': observations and simulations of MACS J0717.5+3745
    We present a gravitational lensing and X-ray analysis of a massive galaxy cluster and its surroundings. The core of MACS J0717.5+3745 (M(R
  • Publicación
    Halo concentrations in the standard Λ cold dark matter cosmology
    We study the concentration of dark matter haloes and its evolution in N-body simulations of the standard Λ cold dark matter (ΛCDM) cosmology. The results...
  • Publicación
    High-velocity clouds as dark matter in the Local Group
    The High-Velocity Clouds (HVCs) observed in the Galactic neighbourhood, have been proposed to be remnants of the formation of the galaxies in the Local Group...
  • Publicación
    How Far Do They Go? The Outer Structure of Galactic Dark Matter Halos
    We study the density profiles of collapsed galaxy-size dark matter halos with masses 1011 to 5×1012 Msolar focusing mostly on the halo outer regions from the...