Promotor: K.H. Kuijken

Promotores: Prof.dr. J. Schaye, Prof.dr. S.D.M. White (MPA Garching)

In this thesis, I study the formation of large-scale structure and the physics of particle acceleration at large scales (~Mpc).

Promotor: Prof.dr. K.H. Kuijken, Co-Promotor: H.Hoekstra

Promotor: Prof.dr. H.J.A. Rottgering

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.

Hot astrophysical plasma is ubiquitous in the Universe, from comets in our Solar system to the largest scale structures -- the cosmic web filaments. These hot plasmas, with the temperature of a few millions of degrees, are often observed in the X-ray wavelength range.

Promotor: K. Kuijken, Co-Promotor: H. Hoekstra

Promotor: J. Schaye

Promotor: Koen Kuijken Co-promotor: Henk Hoekstra

This thesis focuses on the X-ray spectral analysis of merging galaxy clusters and the plasma code development for future high-resolution X-ray spectroscopy observations.

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.

This thesis investigates how galaxies form and what diversifies the evolutionary histories of galaxies.

Promotor: Prof.dr. J.M. van Ruitenbeek, Prof.dr. R.M. Tromp

A century ago, it was unclear whether the stars in the sky were clustered in groups, or widely spread in the universe.

Promotor: H.J.A. Röttgering, Co-promotor: M. Haverkorn

Promotor: Prof.dr. A. P. IJzerman, Co-Promotor: L.H. Heitman

Astronomen willen het heelal begrijpen, van de Oerknal tot nu, en hoe dit verder zal gaan. In Leiden concentreren ze zich daarbij op twee vragen: 'Hoe ontstaan sterren en planeten? en 'Hoe ontstonden in het jonge heelal sterrenstelsels en zwarte gaten?' Een nieuwe generatie telescopen – net klaar of…

Promotor: Prof.dr. J.P. Abrahams, Co-Promotor: N.S. Pannu

In this thesis, the research focuses on the properties of dark matter and dark matter haloes and how they connect with the galaxies we can observe in the Universe.

Promotores: Prof.dr. J. Schaye & Prof.dr. C. Steidel (California Institute of Technology)

Galaxies are environments where gas coalesces, cools, and is converted into stars. However, it remains unclear the exact mechanisms through which galaxies acquire, redistribute and lose their gas.

Promotor: P. T. de Zeeuw, Co-promotor: N. Neumayer; G. van de Ven

Promotie

Het artikel 'Flexible updating of dynamic knowledge structures' met bijdrage van Franziska Richter van Cognitieve Psychologie is uitgebracht door Nature.

The research presented in this thesis makes use of small molecules (as H2 , D2 and O2 ) on well-defined single crystal surfaces (flat Pt(111), flat Cu(211) and curved Pt(111)) to elucidate the role of surface structure and degrees of freedom in the reactant in specific surface reactions.

In this thesis, we present new laboratory data of interstellar dust analogues.

Promotores: Prof.dr. F.P. Israel, Prof.dr. P.P. van der Werf

Improvements of weak gravitational lensing shape measurements are presented and some used for data analysis.

Promotor: M. Franx, Co-Promotor: I.F. Labbé

Promotores: Prof.dr. M. Franx, Prof.dr. M. Kriek (Univ. of California at Berkeley)

This thesis is about cosmological inflation and its relation to observations.

Promotor: S.J. Edixhoven, A. Iovita

Promotor: J.P. Abrahams, Co-promotor: T. Grüne

Promotor: Jelle S. Kaastra Co-promotor: Jelle de Plaa

The thesis describes the use of electron paramagnetic resonance (EPR) spectroscopy, in continuous wave and pulse modes, to address the interaction of α-Synuclein (αS) with membranes and the aggregation of αS.

For centuries astronomers studied the Universe by collecting light. Nowadays, we are living in times of great technological advancements, which allow us to explore our Universe in a new way - though gravitational wave radiation.

Promotor: Prof.dr. M. Franx, Co-Promotor: Rychard Bouwens

Wetenschappers bij de Leidse Sterrewacht onderzoeken de fundamenteel natuurkundige verschijnselen die voor structuur in het heelal zorgen. Deze processen brengen materie bijeen tot sterrenstelsels en gas bijeen tot sterren. Met behulp van krachtige telescopen en geavanceerde berekeningen en computersimulaties…

Promotor: W. Jaffe, Co-promotor: K. Meisenheimer

Promotor: Prof.dr. S. Portegies Zwart

Promotor: T. Hankemeier, Co-Promotores: T. Reijmers, L. Coulier

Promotor: Prof.dr. J. Schaye, Co-promotor: Marcello Cacciato

The solar system was formed approximately 4.56 billion years ago. Despite the numerous theories that have been developed over the years, the formation and evolution of the solar system still remain unclear.

This thesis examines the link between simple molecules and the underlying structure and chemistry within protoplanetary disks - the birthplaces of planets.

The main subject of this thesis is the design and synthesis of paramagnetic molecules for protein studies with NMR and EPR spectroscopy.

In dit onderzoek worden orde isomorfismen en orde antimorfisme bestudeerd in het algemene kader van partieel geordende vector ruimten.

Promotor: Prof.dr. J.W.M. Frenken