1,903 zoekresultaten voor “observational cosmology” in de Publieke website
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Weighing the Dark: Cosmological Applications of Gravitational Lensing
Promotor: K. Kuijken, Co-Promotor: H. Hoekstra
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Henk Hoekstra appointed Professor Observational Cosmology
Astronomer Henk Hoekstra has been appointed Professor Observational Cosmology at the Leiden Observatory with effect from 1 August.
- Cosmology
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A molecular journey : tales of sublimating ices from hot cores to comets
The thesis explores how interstellar chemistry evolves as a function of time and changing physical architectures during the formation of stars.
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Astronomy and Cosmology (MSc)
The master's specialisation Astronomy and Cosmology at Leiden University covers all aspects of modern astrophysics, including observation, interpretation, simulation and theory. This programme is essentially based on combined research in astronomy and physics and is therefore open for students with…
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Henk Hoekstra
Wiskunde en Natuurwetenschappen
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Research in Physics, Cosmology (MSc)
The master’s specialisation Cosmology at Leiden University is positioned at the interface between Theoretical Physics and Observational Astronomy. The main elements are theory, data analysis and numerical simulations, with research on the origin of dark matter as one of the highlights.
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Effects of heavy fields on inflationary cosmology
Promotor: Prof.dr. A. Achucarro, Co-Promotor: J.W. van Holten
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Here it is. A Nahuatl translation of European cosmology
Context and contents of the Izcatqui manuscript in the Royal Tropical Institute, Amsterdam
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Subodh Patil Group (Particle Cosmology)
Our research primarily focuses on the early universe and its origins in theories that go beyond the Standard Model of particle physics.
- Matthieu Schaller Group (Numerical Cosmology)
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Cosmological interpretation of architecture: cases from Ancient China and Mesoamerica
The civilizations of ancient China and Mesoamerica, although not historically related and obviously different in many specific aspects (such as language and writing), show many interesting commonalities and similar tendencies in their cultural manifestations.
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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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Spectroscopy of two-field inflation
This thesis is about cosmological inflation and its relation to observations.
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Probing the properties of dark matter particles with astrophysical observations
It is an established fact that the Standard Model has to be extended to explain the so-called Beyond the Standard Model (BSM) phenomena: dark matter, matter-antimatter asymmetry of the Universe and neutrino flavour oscillations.
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Programme structure
You have ample opportunity to assemble your own study path in Cosmology. The courses cover the full spectrum from theoretical early universe to observational cosmology.
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Programme structure
You have ample opportunities to assemble your own study path. The courses cover the full spectrum from theoretical early universe to observational cosmology.
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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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Alexey Boiarskyi Group (Particle and Astroparticle Physics)
My work is motivated by the necessity to extend Standard Model of Particle Physics in order to explain three observed phenomena that this great theory fails to accommodate
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Reconstructing Magnetic Fields of Spiral Galaxies from Radiopolarimetric Observations
Promotor: H.J.A. Röttgering, Co-promotor: M. Haverkorn
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for transient reductions in the speed of sound of the inflaton in cosmological data, and other topics
Promotor: Prof.dr. A. Achucarro
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Non-equilibrium chemistry and cooling in simulations of galaxy formation
Promotor: J. Schaye
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Extrasolar Planet Detection Through Spatially Resolved Observations
Promotor: Prof. dr. I. Snellen, Co-Promotor: Dr. M. Kenworthy
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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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Alessandra Silvestri Group (the Late Universe)
We are cosmologists, in other words we use physics to study the Universe, how it started and evolved into the structure that we observe around us.
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Testing gravity on the largest scales with kids and friends
What are the 'dark' components of the universe?
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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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Open Space project: where dance meets cosmology
Until 15 May, Open Space will give room for artistic creation and experimentation in a partnership between artists and astronomers. The project is a collaboration among Nederlands Dans Theater (NDT), Korzo and the Leiden Observatory. Starting on 3 May, young dancers of NDT 2, three choreographers, three…
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Aspects of cosmic acceleration
The focus of the dissertation
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About the programme
Within the two-year Astronomy master’s programme, you can choose from seven specialisations, ranging from fundamental or applied astronomy research in cosmology, instrumentation or data science, to combinations of astronomy research with education, management or science communication.
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Hunting dark matter with X-rays
Promotor: A. Achúcarro Co-promotor: A. Boyarsky
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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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Exploring the Universe
Astronomers want to understand the Universe, from the Big Bang to the present day, and what the future will hold. In Leiden they focus on two key questions: ‘How did stars and planets originate’ and ‘How were galaxies and black holes formed in the young Universe?’ A new generation of telescopes – just…
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New flowchart to eliminate Universe models
Cosmologists have many possible models for the Universe, of which only one can be true. A new flowchart will eliminate some of them when two specific Universe features are accurately measured. Publication in Physical Review D on 7 November.
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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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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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Star-Forming Galaxies at the Cosmic Dawn
Promotor: Prof.dr. M. Franx, Co-Promotor: Rychard Bouwens
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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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The Holy Land in Observant Franciscan Texts (c. 1480–1650). Theology, Travel, and Territoriality
In The Holy Land in Observant Franciscan Texts (c. 1480–1650) Marianne Ritsema van Eck analyses the development of the complex Observant Franciscan engagement with the Holy Land during the early modern period.
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Ewine van Dishoeck receives Fritz Zwicky prize for astrophysics & cosmology
The Fritz Zwicky Prize 2022 for Astrophysics & Cosmology has been awarded to Prof. Ewine F. van Dishoeck for her pioneering, decades-long work in astrochemistry and molecular spectroscopy, as well as for her leadership within the astronomical community. The award was announced today by the European…
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Meet this year's Lorentz Professor Renata Kallosh: 'Lorentz is my hero in physics'
Professor Renata Kallosh (Stanford University), one of the world’s leading theoretical physicists, will be this summer’s Lorentz Professor at the Leiden institute for theoretical physics. Her main areas of interest are cosmology and string theory. She studied physics in Moscow, where she also obtained…
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Yuye Que
Faculteit der Geesteswetenschappen
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Metals in the diffuse gas around high-redshift galaxies
Promotores: Prof.dr. J. Schaye & Prof.dr. C. Steidel (California Institute of Technology)
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Alexey Boiarskyi appointed full professor
Theoretical physicist and cosmologist Alexey Boiarskyi has been appointed full professor per 1 October.
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The connection between mass and light in galaxy clusters
Promotor: Koen Kuijken Co-promotor: Henk Hoekstra
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Galaxy formation traced by heavy element pollution
Galaxies form and evolve through close interaction with their surroundings. As a result, the heavy elements ('metals') that are synthesized in stars, are found both inside and outside galaxies.
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From supernovae to galaxy clusters: observing the chemical enrichment in the hot intra-cluster medium
Promotor: Jelle S. Kaastra Co-promotor: Jelle de Plaa
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Marijn Franx
Wiskunde en Natuurwetenschappen
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programmer, Automated machine learning for spatio-temporal Earth Observation datasets
Wiskunde en Natuurwetenschappen, Leiden Institute of Advanced Computer Science (LIACS)
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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.