Astrophysical: Dark matter

  • Publication
    The number of globular clusters around the iconic UDG DF44 is as expected for dwarf galaxies
    There is a growing consensus that the vast majority of ultradiffuse galaxies (UDGs) are dwarf galaxies. However, there remain a few UDGs that seem to be special...
  • Publication
    The Number of Tidal Dwarf Satellite Galaxies in Dependence of Bulge Index
    We show that a significant correlation (up to 5σ) emerges between the bulge index, defined to be larger for a larger bulge/disk ratio, in spiral galaxies with...
  • Publication
    The orientation of galaxy dark matter haloes around cosmic voids
    Using the Millennium N-body Simulation we explore how the shape and angular momentum of galaxy dark matter haloes surrounding the largest cosmological voids are...
  • Publication
    The principle of maximum entropy explains the cores observed in the mass distribution of dwarf galaxies
    Cold dark matter (CDM) simulations predict a central cusp in the mass distribution of galaxies. This prediction is in stark contrast with observations of dwarf...
  • Publication
    The Pristine survey - XVIII. C-19: tidal debris of a dark matter-dominated globular cluster?
    The recently discovered C-19 stellar stream is a collection of kinematically associated metal-poor stars in the halo of the Milky Way lacking an obvious...
  • News
    The puzzle of the galaxy with no dark matter
    International research led by the Instituto de Astrofísica de Canarias (IAC) and the University of La Laguna (ULL) has found the first evidence of a massive...
  • News
    The puzzle of the strange galaxy made of 99.99% dark matter is solved
    At present, the formation of galaxies is difficult to understand without the presence of a ubiquitous, but mysterious component, termed dark matter. Astronomers...
  • Publication
    The quantity of dark matter in early-type galaxies and its relation to the environment
    We study the behaviour of the dynamical and stellar mass inside the effective radius of early-type galaxies (ETGs) as a function of environment considering...
  • Talk
    The quest for axions
    We introduce the strong CP problem and the existence of the Axion as a possible solution. We discuss the possibility that axions are the dark matter of the...