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  1. Bayesian control variates for optimal covariance estimation with pairs of simulations and surrogates

    Publication
    Predictions of the mean and covariance matrix of summary statistics are critical for confronting cosmological theories with observations, not least for likelihood approximations and parameter inference. Accurate estimates …

  2. Breaking baryon-cosmology degeneracy with the electron density power spectrum

    Publication
    Uncertain feedback processes in galaxies affect the distribution of matter, currently limiting the power of weak lensing surveys. If we can identify cosmological statistics that are robust against …

  3. Bayesian estimation of our local motion from the Planck-2018 CMB temperature map

    Publication
    The largest fluctuation in the CMB sky is the CMB dipole, which is believed to be caused by the motion of our observation frame with respect to the …

  4. CARPool covariance: fast, unbiased covariance estimation for large-scale structure observables

    Publication
    The covariance matrix Σ of non-linear clustering statistics that are measured in current and upcoming surveys is of fundamental interest for comparing cosmological theory and data and …

  5. CARPool: fast, accurate computation of large-scale structure statistics by pairing costly and cheap cosmological simulations

    Publication
    To exploit the power of next-generation large-scale structure surveys, ensembles of numerical simulations are necessary to give accurate theoretical predictions of the statistics of observables. High …

  6. Accurate precision cosmology with redshift unknown gravitational wave sources

    Publication
    Gravitational waves can provide an accurate measurement of the luminosity distance to the source, but cannot provide the source redshift unless the degeneracy between mass and redshift can …

  7. Sampling-based inference of the primordial CMB and gravitational lensing

    Publication
    The search for primordial gravitational waves in the Cosmic Microwave Background (CMB) will soon be limited by our ability to remove the lensing contamination to B-mode polarization …

  8. CMB-HD: Astro2020 RFI Response

    Publication
    CMB-HD is a proposed ultra-deep (0.5 uk-arcmin), high-resolution (15 arcseconds) millimeter-wave survey over half the sky that would answer many outstanding questions …

  9. A new probe of Axion-Like Particles: CMB polarization distortions due to cluster magnetic fields

    Publication
    We propose using the upcoming Cosmic Microwave Background (CMB) ground based experiments to detect the signal of ALPs (Axion like particles) interacting with magnetic fields in galaxy clusters …

  10. Bayesian delensing of CMB temperature and polarization

    Publication
    We develop the first algorithm able to jointly compute the maximum {it a posteriori} estimate of the Cosmic Microwave Background (CMB) temperature and polarization fields, the gravitational potential …

  11. Massive Neutrinos Leave Fingerprints on Cosmic Voids

    Publication
    Massive neutrinos uniquely affect cosmic voids. We explore their impact on void clustering using both the DEMNUni and MassiveNuS simulations. For voids, neutrino effects depend on the observed …

  12. Beyond the classical distance-redshift test: cross-correlating redshift-free standard candles and sirens with redshift surveys

    Publication
    LSST will supply up to 10^6 supernovae (SNe) to constrain dark energy through the distance-redshift (DL-z) test. Obtaining spectroscopic SN redshifts (spec-zs) is unfeasible …

  13. Automatic physical inference with information maximizing neural networks

    Publication
    Compressing large data sets to a manageable number of summaries that are informative about the underlying parameters vastly simplifies both frequentist and Bayesian inference. When only simulations are …

  14. Bayesian delensing of CMB temperature and polarization

    Publication
    We develop the first algorithm able to jointly compute the maximum {it a posteriori} estimate of the Cosmic Microwave Background (CMB) temperature and polarization fields, the gravitational potential …