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

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.

Promotor: J.S. Kaastra Co-promotor: E. Constantini

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.

This thesis examines silicon pore optics (SPO), a technology that exploits silicon wafers from the semiconductor industry to create extremely high quality X-ray optics, by studying its manufacturing process, applications, and prospects.

I have studied the hot, diffuse gas around and between galaxies. Specifically, I have used the EAGLE numerical simulations of galaxy formation to predict the properties of this gas, and I have used those properties to predict specific observables: soft X-ray absorption and emission lines.

Promotor: Prof.dr. V. Icke, Co-Promotor: T.I. Madura

Promotores: K.J. Batenburg, B. Koren

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.

Promotores: S.F. Portegies Zwart, E. M. Rossi

Promotor: J.W.M. Frenken Co-Promotor: R. Felici

Promotor: Prof.dr. M. Ubbink

Promotie

Promotie

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.

Promotor: Prof.dr. P. Stevenhagen, Co-Promotor: J.H. Evertse

Promotor: K.J. Batenburg

Tomography is a powerful technique to non-destructively determine the interior structure of an object.Usually, a series of projection images (e.g.\ X-ray images) is acquired from a range of different positions.

Promotie

Promotor: S.J. Edixhoven, Co-promotor: K.J. Batenburg

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

In this thesis, I studied the origin and evolution of the non-thermal radiation in merging galaxy clusters.

Multiple stars, that is two or more stars composing a gravitationally bound system, are common in the universe.

Promotor: Prof.dr. F. den Hollander, G.Maillard

Business Process Model and Notation (BPMN) has become the standard for business processes diagrams.

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

Promotie

Promotie

Cathodic corrosion is a relatively unknown phenomenon that can severely etch metallic electrodes at cathodic (negative) potentials.

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

Promotor: R. Tijdeman, Co-promotor: H.J.J. te Riele

Promotor: K.J. Batenburg, Co-promotor: A.W. van der Vaart, B. de Smit

Hydrodesulfurization (HDS) is an ubiquitous part of oil refining that ensures that fuels are cleaned of impurities and environment release of pollutants such as SOx and NOx gasses are minimized.

Wiskunde en Natuurwetenschappen, Leids Instituut voor Chemisch Onderzoek (LIC)

Wiskunde en Natuurwetenschappen, Leids Instituut voor Chemisch Onderzoek (LIC)

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

In surface science there is great effort to move from studying simple, flat model surfaces in vacuum to investigating more complex model catalysts in gas environments (in situ). This thesis gives three examples of such studies using microscopy and spectroscopy.

Promotie

Hoe kan de methode om de gecombineerde effecten van metaal-gebaseerde chemische stoffetn te bepalen worden verbeterd?

Wiskunde en Natuurwetenschappen, Leids Instituut voor Chemisch Onderzoek (LIC)

The research of the Mathematical Institute is driven by the curiosity of its members and has many internal and external connections. It can be characterised as fundamental but with an open attitude towards applications.

The LIACS Media Lab has received a research grant from the worldwide leading graphics hardware company NVIDIA. The grant exists of newly developed hardware utilizing thousands of processors. LIACS researchers will use it to investigate deep learning in understanding imagery from sources such as MRI…

Wiskunde en Natuurwetenschappen, Leids Instituut voor Onderzoek in de Natuurkunde (LION)

Theoretisch natuurkundigen Kevin Grosvenor en Sam Young hebben Marie Curie-beurzen toegekend gekregen voor onderzoek aan het Instituut Lorentz.

The NWO (The Netherlands Organization for Scientific Research) awarded prof. Joost van Batenburg with the Vici grant 2015 for his research project ‘Real-time 3D Tomography’.

De Leidse astrofysicus Alexey Boyarsky en zijn medewerkers hebben mogelijk een spoor van donkere materie geïdentificeerd dat leidt naar een nieuw deeltje: het steriele neutrino. Een onderzoeksgroep in Harvard deed dezelfde ontdekking op nagenoeg hetzelfde moment.

Lezing

Wiskunde en Natuurwetenschappen, Leids Instituut voor Chemisch Onderzoek (LIC)

Wiskunde en Natuurwetenschappen, Leids Instituut voor Chemisch Onderzoek (LIC)