Astrophysical: Gravitation

  • Publication
    Planck 2015 results. XIV. Dark energy and modified gravity
    We study the implications of Planck data for models of dark energy (DE) and modified gravity (MG) beyond the standard cosmological constant scenario. We start...
  • Publication
    Planck 2015 results. XVIII. Background geometry and topology of the Universe
    Maps of cosmic microwave background (CMB) temperature and polarization from the 2015 release of Planck data provide the highestquality full-sky view of the...
  • Talk
    Probing the early Universe with gravitational Wave Background
    We will review both theoretical and obsevational aspects of gravitational wave backgrounds of cosmological origin. We will present a classifcation of...
  • Publication
    Testing Newtonian gravity in the low acceleration regime with globular clusters: the case of ω Centauri revisited
    Context. Stellar kinematics in the external regions of globular clusters can be used to probe the validity of Newton's law in the low acceleration regimes...
  • Publication
    Testing Newtonian gravity with distant globular clusters: NGC 1851 and NGC 1904
    Context. Globular clusters are useful for testing the validity of Newtonian dynamics in the low acceleration regime typical of galaxies, without the...
  • Publication
    Testing the Black Hole No-hair Theorem with OJ287
    We examine the ability to test the black hole no-hair theorem at the 10% level in this decade using the binary black hole in OJ287. In the test we constrain the...
  • Publication
    The Anomalous Acceleration of the Pioneer Spacecrafts
    Radiometric data from the Pioneer 10 and 11 spacecrafts have revealed an unexplained constant acceleration of a_A = (8.74+/-1.33)×10^{-10}m s^{-2} towards the...
  • Publication
    The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: measuring growth rate and geometry with anisotropic clustering
    We use the observed anisotropic clustering of galaxies in the Baryon Oscillation Spectroscopic Survey Data Release 11 CMASS sample to measure the linear growth...
  • Publication
    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...