Promotores: Prof.dr. A.G.G.M. Tielens, Prof.dr. L. Kaper (UvA)

Promotor: Prof.dr. A.G.G.M. Tielens

Promotor: Prof. dr. A.G.G.M. Tielens

The Low Frequency Array enables studies of low-frequency carbon radio recombination lines with unprecedented sensitivity, spectral and spatial resolution.

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

Prof. A.G.G.M. (Xander) Tielens wordt bij 1 januari bij de Faculteit der Wiskunde en Natuurwetenschappen benoemd tot hoogleraar ‘Physics and Chemistry of the Interstellar Medium’. Tielens werkt momenteel als senior onderzoeker bij Ames in Moffett Field, Californië. Ames is een onderdeel van NASA. Daarnaast…

Promotor: H.V.J. Linnartz

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.

Laboratory, observation and modeling work on the dissociation of polycyclic aromatic hydrocarbons in interstellar environments and the formation of new molecular species through the fragmentation process.

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

This thesis is largely an experimental study on the formation of solid-state simple and complex organic molecules in the H2O-rich and CO-rich ice phases of dense interstellar clouds and dark cores.

Polycyclic aromatic hydrocarbons (PAHs) are the most abundant class of organic compounds in space. The PAH field evolves from the constant interaction between experimentalists, theorists, modellers and observers. While laboratory research and quantum chemical calculations together set up the molecular…

Promotor: H.J.A. Röttgering, Co-promotor: G.K. Miley

In this thesis chemical and physical processes in the ice mantles on interstellar dust grains are studied.

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.

Promotor: Prof.dr. H.L.V. Linnartz

Promotor: Prof.dr. H.V.J. Linnartz, Co-Promotores: S. Ioppolo, H.M. Cuppen

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

Promotor: F.P. Israel, Co-Promoter: R. Meijerink

This thesis is about the study of hydrocarbons via infrared spectroscopy.

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

Ineke Smit verdedigde haar proefschrift op 17 september 2019

Stofdeeltjes in de ruimte vormen de basis voor nieuwe sterren en planeten. Maar waar bestaan die stofdeeltjes uit, en hoe gedragen ze zich? Sascha Zeegers onderzocht het. Promotie op 1 november.

A revolutionary supercomputer with energy-efficient parts that are available in the shops. Professor of Computational Astrophysics Simon Portegies Zwart has been awarded an NWO Medium Grant to build this processing giant, which will have the power of a supercomputer but requires only one percent of…

Astronomen van de Universiteit Leiden hebben in data van het SOFIA observatorium ontdekt dat de sterrenwind van een pasgeboren ster in de Orionnevel verhindert dat er in de directe omgeving meer sterren worden gevormd. Dat maakte coauteur Xander Tielens bekend tijdens een persconferentie op de 233ste…

This thesis revolves around the electronic spectroscopy of molecules in the laboratory and the search for the carriers of the diffuse interstellar bands (DIBs).

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

NWO heeft vier TOP subsidies toegekend voor Leidse astronomen en één voor een Leidse wiskundige, landelijk zijn er 19 subsidies toekend aan exacte wetenschappers. De onderzoeken van prof. Xander Tielens met prof. Huub Rottgering, dr. Michiel Hogerheijde en dr. Jelle Kaastra zijn gehonoreerd met een…

It has now been well established that shocks and turbulent motions in the intra-cluster medium (ICM) generated through cluster mergers can produce large-scale synchrotron emission.

Promotie

The thesis explores how interstellar chemistry evolves as a function of time and changing physical architectures during the formation of stars.

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.

Promotie

Lezing

Promotie

Promotie

Een internationaal team van laboratorium-astrofysici en astrochemici heeft aangetoond dat glycine, het eenvoudigste aminozuur en een belangrijke bouwsteen van het leven, kan ontstaan onder de barre omstandigheden die in de ruimte heersen. De resultaten worden maandagavond gepubliceerd in Nature Astr…

Promotor: Prof.dr. H.V.J. Linnartz

Promotie

Cardiovascular diseases are among the most frequent causes of death in the world. The main underlying pathology of cardiovascular diseases is the development of atherosclerosis in the medium and large-sized arteries.

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.

Promotie

In order to gain a better insight into the basis of the rapid jasmonic acid (JA)-mediated stress response, an integrated approach using a targeted high-resolution mass spectrometry-based (HRMS) platform, was conducted to monitor the metabolism of JA using the model system of cell suspension cultures…

Promotor: Prof.dr. E. F. van Dishoeck

Promotor: Prof.dr. M. de Jong

Promotor: E. F. van Dishoeck, Co-promotor: C. Walsh

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

Lezing

One of the major limitations in culturing complex tissues or organs is the lack of vascularization in the cultured tissue. Development of a functional capillary bed could overcome this problem.