24 zoekresultaten voor “cosmology” in de Publieke website
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Unveiling dark structures with accurate weak lensing
Improvements of weak gravitational lensing shape measurements are presented and some used for data analysis.
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On Multifield Inflation, Adiabaticity and the Speed of Sound of the Curvature Perturbations
Promotor: A. Achúcarro, Co-Promotor: G.A. Palma
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Probing Gravity at Cosmic Scales
The theoretical explanation of cosmic acceleration is nowadays one of the biggest puzzles in cosmology.
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Non-equilibrium chemistry and cooling in simulations of galaxy formation
Promotor: J. Schaye
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Weighing the Dark: Cosmological Applications of Gravitational Lensing
Promotor: K. Kuijken, Co-Promotor: H. Hoekstra
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Cosmic tomography with weak gravitational lensing
We explored the Universe using weak gravitational lensing, a phenomenon that occurs when light from distant galaxies is bent by the gravitational fields of closer cosmic objects, much like how a lens distorts light.
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Spectroscopy of two-field inflation
This thesis is about cosmological inflation and its relation to observations.
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Hunting dark matter with X-rays
Promotor: A. Achúcarro Co-promotor: A. Boyarsky
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Aspects of cosmic acceleration
The focus of the dissertation
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Exploring the Edge
At the largest scales, two ingredients dictate the distribution of matter in the Universe. The first is dark matter, acting as an invisible scaffolding held together by gravitational forces.
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Hunting for new physics in the primordial Universe
This thesis contributes to studying primordial cosmology theories and their detectability in future observations.
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The alignment of galaxies across all scales
Galaxy intrinsic alignments induce a major astrophysical contamination to weak gravitational lensing measurements and need to be modelled and mitigated when extracting cosmological information from such measurements.
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Studying dark matter using weak gravitational lensing : from galaxies to the cosmic web
Of all the mass in our Universe, 80% is thought to consist of a hypothetical and invisible substance called dark matter (DM).
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Playing dice with the Universe
The ultimate goal of cosmologists is to find a cosmological model able to explain the current observational data.
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Aggravating matters: accounting for baryons in cosmological analyses
Three major cosmology-focused missions are planned for the next decade: the Euclid space telescope, the Vera C. Rubin Observatory in Chile, and the Nancy Grace Roman Space Telescope.
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Star formation and aging at cosmic noon: the spectral evolution of galaxies from z=2
Promotores: Prof.dr. M. Franx, Prof.dr. P.G. van Dokkum (Yale University)
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Star-Forming Galaxies at the Cosmic Dawn
Promotor: Prof.dr. M. Franx, Co-Promotor: Rychard Bouwens
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Gravitational waves through the cosmic web
The first direct detection of gravitational waves opened the possibility of mapping the Universe via this new and independent messenger.
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The connection between mass and light in galaxy clusters
Promotor: Koen Kuijken Co-promotor: Henk Hoekstra
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Early death of massive galaxies in the distant universe
Promotor: M. Franx, Co-Promotor: I.F. Labbé
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Higgs dynamics in the early universe
In the early universe, the dynamics of the Higgs field can give rise to many interesting phenomena.
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Light Weighed: On the Statistics and Systematics of Weak Gravitational Lensing
In astronomy, the interpration of observations and measurements plays a crucial role: we rely purely and fundamentally on the information that reaches us as observers. And 80% of all matter in the universe is undetectable directly.
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Enlightening the Primordial Dark Ages
This thesis is dedicated to the exploration of the primordial dark ages: unknown physics during the earliest stages of the Universe’s expansion that have not yet been directly probed by observations. Cosmic inflation is a burst of exponential expansion of space after the “Big Bang”.
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Alexey Boiarskyi benoemd tot hoogleraar
Theoretisch natuurkundige en kosmoloog Alexey Boiarskyi is per 1 oktober benoemd tot hoogleraar.