Subventions et des contributions :

Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier. (2017-2018 à 2018-2019)

Over the past 35 years (!) my group has shown that primary cosmic background radiation (CMB) anisotropies are the key observables for elucidating the correct structure formation theory, and precision values of cosmological parameters that define it, such as the dark energy, dark matter, baryon and neutrino densities, the amplitude and slope of the spectrum of primordial fluctuations, including gravity waves, the average spatial curvature of the Universe, early and late inflation constraints, including on primordial non-Gaussianities in the spatial curvature. I have been involved in Planck since 1993, as a Planck coI and Canadian Space Agency PI since 2001. Analyzing our Planck results has been my primary focus over the past grant cycle, with major releases of data products and results in 2011, 2013 and 2015, and more work for the next 2017 releases, and beyond): our Canadian group has had a major impact on the cornucopia of influential Planck papers covering all of the cosmological topics listed above. Our Chile-based Atacama CMB Cosmology telescope extended the results to higher resolution. Over the next five years the outpouring of cosmic data will greatly enhance, from CMB and large scale structure (LSS) and other probes, including much more from secondary CMB anisotropies involving nonlinear physics. My group will be in the thick of it, as team members on LSS surveys (the redshifted-21cm BAO experiment CHIME, carbon monoxide and CII intensity mapping experiments, ESA’s EUCLID), as well as CMB experiments (the balloon-borne Spider, since 2005, Advanced ACTpol followed by the Simons Observatory and then the ambitious DOE-based CMB Stage 4).

Theoretical and simulation work in aid of the experiments involves many topics: 1. the theory of isocurvature mode development in post-inflation preheating and entropy generation, with emphasis on non-Gaussian curvature fluctuations; 2. decoupling of the cosmic (oscillating) neutrino background as a probe of weak physics variations, and its impact on nucleosynthesis and CMB; 3. 3D cosmic web theory development; 4. more accurate Eulerian space maps of our mass-peak patch Lagrangian-space halo model; 5. extensions to more "Beyond the Standard Model of Cosmology" (BSMc) physics, including primordial non-Gaussianity, subdominant massive neutrinos, dynamical dark energy, and coupled dark energy (e.g., conformally transformed modified gravity models); 6. calculating and measuring gastrophysical response functions from high resolution simulations for mass-peak patch halo schemes to construct observables to speedily create statistical ensembles of 2D CMB and 3D tomographic LSS generalized BSMc maps to fully mock observables, with emphasis on CMB-LSS cross-correlations, the thermal and kinetic CMB Sunyaev-Zeldovich effect, the Cosmic Infrared Background, and HI and CO intensity mapping.