Astrofísicas: Materia oscura

  • Charla
    Beyond the Concordance Model with galaxy cluster mass profiles
    I present the recent results obtained using the updated version of MG-MAMPOSSt, a code that constrains modified gravity (MG) models viable at cosmological...
  • Noticia
    Big Data para reconstruir la evolución de la red cósmica
    El Instituto de Astrofísica de Canarias (IAC) ha liderado un equipo internacional que ha desarrollado un algoritmo denominado COSMIC BIRTH para el análisis...
  • Publicación
    Can a negative-mass cosmology explain dark matter and dark energy?
    A recent study by Farnes (2018, A&A, 620, A92) proposed an alternative cosmological model in which both dark matter and dark energy are replaced with a single...
  • Charla
    Can Voids and Superclusters trace Dark Energy?
    I revisit the claim of Dark Energy detection after stacking CMB data on the angular position of voids and superclusters in Sloan Data. I examine the...
  • Publicación
    Challenging a Newtonian prediction through Gaia wide binaries
    Under Newtonian dynamics, the relative motion of the components of a binary star should follow a Keplerian scaling with separation. Once orientation effects and...
  • Publicación
    Charting the Galactic Acceleration Field. I. A Search for Stellar Streams with Gaia DR2 and EDR3 with Follow-up from ESPaDOnS and UVES
    We present maps of the stellar streams detected in the Gaia Data Release 2 (DR2) and Early Data Release 3 (EDR3) catalogs using the STREAMFINDER algorithm. We...
  • Publicación
    Charting the Galactic Acceleration Field. II. A Global Mass Model of the Milky Way from the STREAMFINDER Atlas of Stellar Streams Detected in Gaia DR3
    We present an atlas and follow-up spectroscopic observations of 87 thin stream-like structures detected with the STREAMFINDER algorithm in Gaia DR3, of which 28...
  • Publicación
    CHEX-MATE: Dynamical masses for a sample of 101 Planck Sunyaev-Zeldovich-selected galaxy clusters
    The Cluster HEritage project with XMM-Newton – Mass Assembly and Thermodynamics at the Endpoint of structure formation (CHEX-MATE) is a programme to study a...
  • Noticia
    Científicos del IAC completan un estudio sin precedentes de la masa de más de 500 cúmulos de galaxias
    Un equipo de investigadores del grupo de Cosmología del Instituto de Astrofísica de Canarias (IAC) ha obtenido una de las medidas más precisas de la masa que...