Astrophysical: Cosmological parameters

  • Publication
    Planck intermediate results. XVI. Profile likelihoods for cosmological parameters
    We explore the 2013 Planck likelihood function with a high-precision multi-dimensional minimizer (Minuit). This allows a refinement of the ΛCDM best-fit...
  • Publication
    Planck intermediate results. XXIV. Constraints on variations in fundamental constants
    Any variation in the fundamental physical constants, more particularly in the fine structure constant, α, or in the mass of the electron, me, affects the...
  • Publication
    Probing gravity with the DES-CMASS sample and BOSS spectroscopy
    The DES-CMASS sample (DMASS) is designed to optimally combine the weak lensing measurements from the Dark Energy Survey (DES) and redshift-space distortions...
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    Redshift-distance relations from type Ia supernova observations. New constraints on grey dust models
    Extinction due to intergalactic grey dust has been proposed as an alternative to accelerated expansion to account for the dimming of SnIa fluxes beyond z ≃ 0.5...
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    Robust sampling for weak lensing and clustering analyses with the Dark Energy Survey
    Recent cosmological analyses rely on the ability to accurately sample from high-dimensional posterior distributions. A variety of algorithms have been applied...
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    Simultaneous modelling of matter power spectrum and bispectrum in the presence of baryons
    We demonstrate that baryonification algorithms, which displace particles in gravity-only simulations according to physically motivated prescriptions, can...
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    Tensor-to-scalar ratio forecasts for extended LiteBIRD frequency configurations
    LiteBIRD is a planned JAXA-led cosmic microwave background (CMB) B-mode satellite experiment aiming for launch in the late 2020s, with a primary goal of...
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    Testing the Wavelength Dependence of Cosmological Redshift Down to Δz ∼ 10‑6
    At the core of the standard cosmological model lies the assumption that the redshift of distant galaxies is independent of photon wavelength. This invariance of...
  • Publication
    The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: a tomographic analysis of structure growth and expansion rate from anisotropic galaxy clustering
    We perform a tomographic analysis of structure growth and expansion rate from the anisotropic galaxy clustering of the combined sample of Baryon Oscillation...