Astrofísicas: Gravitación

  • Publicación
    The Complete Zeldovich Approximation
    We have developed a generalization of the Zeldovich approximation that is exact in a wide variety of situations, including planar, spherical, and cylindrical...
  • Publicación
    The correlation structure of dark matter halo properties
    We investigate the correlation between nine different dark matter halo properties using a rank correlation analysis and a Principal Component Analysis for a...
  • Publicación
    The COSMOS-Web ring: In-depth characterization of an Einstein ring lensing system at z ∼ 2
    Aims: We provide an in-depth analysis of the COSMOS-Web ring, an Einstein ring at z ≈ 2 that we serendipitously discovered during the data reduction of the...
  • Publicación
    The Fast Spiral-in of the Companion Star to the Black Hole XTE J1118+480
    We report the detection of an orbital period decay of dot{P}=-1.83+/- 0.66 ms yr-1 in the black hole X-ray binary XTE J1118+480. This corresponds to a period...
  • Publicación
    The Mark-I helioseismic experiment - I. Measurements of the solar gravitational redshift (1976-2013)
    The resonant scattering solar spectrophotometer `Mark-I', designed and build at the University of Birmingham (UK) and located at the Observatorio del Teide...
  • Charla
    The multiple routes of galaxy transformation across the cosmic epochs
    In the local universe most of the stellar mass is in passive galaxies, where star formation isabsent or at very low levels. Understanding what are the...
  • Publicación
    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...
  • Publicación
    Three sub-Jovian-mass microlensing planets: MOA-2022-BLG-563Lb, KMT-2023-BLG-0469Lb, and KMT-2023-BLG-0735Lb
    Aims: We analyze the anomalies appearing in the light curves of the three microlensing events MOA-2022-BLG-563, KMT-2023-BLG-0469, and KMT-2023-BLG-0735. The...
  • Publicación
    Using globular clusters to test gravity in the weak acceleration regime: NGC 7099
    Aims:A test of Newton's law of gravity in the low acceleration regime using globular clusters is presented and new results for the core collapsed globular...