Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"CMB lensing"”.
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Reconstructing the Sky with CMB Lensing methods
Current and future high significance CMB lensing-galaxy cross-correlations will soon precisely probe the growth of structure and provide powerful tests for parameter tensions, non-Gaussianity, neutrino mass, and modifications to Λ−CDM and gravity. However, such cross-correlations are sensitive to …
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The Universe through a magnifying glass: Precision cosmology with CMB lensing
… in our universe. Measuring the arcminute-scale lensing deflections experienced by the CMB photons as they travel from the last scattering surface to our telescopes enables the mapping of the matter distribution to very high redshifts. This lensing signal provides a clean window for constraining …
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CMB lensing measurements with two years of data from the SPT-3G survey
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
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Cosmology from galaxy clusters with cosmic microwave background lensing mass calibration
… clusters, with a cosmic microwave background (CMB) lensing calibration of the cluster masses. As demonstrated by Planck, galaxy clusters detected through their SZ signature offer a powerful way to constrain cosmological parameters such as Ωm, which parametrises the mean matter density of the …
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The Weak Lensing Hat-Trick: Constraining Cosmology with Galaxy, CMB, and Kinematic Lensing
… an exciting decade in which weak gravitational lensing surveys are probing the universe with unparalleled volume and precision. These surveys will produce not only high-quality images of hundreds of millions of galaxies and high-resolution microwave sky maps, but also create challenges in terms …
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Higher Order Couplings in the Clustering of Biased Tracers of Large-Scale Structure
… inspired by Cosmic Microwave Background (CMB) lensing reconstruction. We incorporate non-linearities due to gravity, galaxy biasing and primordial non-Gaussianity, and verify our predictions with N-body simulations. We perform a Fisher matrix analysis on how the reconstructed field in …
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Tracing the Cosmos: Probing Cosmology with the Large Scale Structure of the Universe
… inferred from the Cosmic Microwave Background (CMB). I present work that aims to exploit a novel feature in the distribution of matter in the Universe, the so called matter-radiation equality scale, to obtain independent estimates of the expansion rate. I develop a method to isolate the …
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Clestial harmonics - Applications of Angular Power Spectra to Problems in Astroparticle and Cosmological Physics
… tomographic and multi-tracer analyses combining CMB lensing, galaxy clustering and weak lensing / cosmic shear observables from several surveys. These and other works indeed identified the shear signal as the main source of the tension, driving the discrepancy to a value as high as ∼ 3.5σ, a …
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Probes of cosmic inflation: from the CMB to quantum analogues
… anisotropies of the cosmic microwave background (CMB). The first part of the thesis focuses on parity-odd B-mode polarization patterns, which are a distinctive imprint of primordial gravitational waves (PGW) on large scales. The Simons Observatory (SO), a new ground-based CMB experiment, is …
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Post-inflationary non-Gaussianities on the cosmic microwave background
The cosmic microwave background (CMB) provides unprecedented details about the history of our universe and helps to establish the standard model in modern cosmology. With the ongoing and future CMB observations, higher precision can be achieved and novel windows will be opened for studying …