On Wednesday 9 November, Armin Cuyvers was interviewed on the already infamous UK ‘Internal Market Bill', which was published that day.

On Thursday 12 December, the day of the UK general election, Armin Cuyvers was interviewed by BNR Nieuwsradio.

Promotor: S.M. Verduyn Lunel, Co-promotor: O.W. van Gaans

De menselijke geschiedenis strekt zich ver uit vóór de tijd waarin de mensen opschreven wat er zoal gebeurde.

Promotor: S.M. Verduyn Lunel, Co-Promotor: O.W. van Gaans

Promotores: Arjen Doelman, Jens Rademacher, Max Rietkerk

Promotor: S.M. Verduyn Lunel, Co-promotor: O. van Gaans

More on the Dutch webpage.

The Dutch-Japanese made DESHIMA instrument has passed its first practical tests when measuring the distances and ages of distant galaxies. The core of the instrument is a chip the size of two euro coins that measures 49 shades of far infrared light. The developers of the spectrometer publish the results…

Jordy Bouwman and future Sterrewachter Reinout van Weeren have been awarded a Vidi subsidy to set up or expand their own line of research.

Below thesis archives will be moved shortly (work in progress) to the Leiden Repository. Once this is done, theses submitted by MI students (from 2008 onwards) can be accessed via the Repository and will be removed from this site.

With new algorithms and supercomputers, an incredibly detailed radio map of the universe was created. Now astronomers can look at radio data of galaxies with much more precision. This was published in Nature Astronomy by Leiden PhD student Frits Sweijen and colleagues.

An international team of astronomers has found an unexpected link between dark matter and visible stars in stellar systems. This discovery may even cause us to reconsider our understanding of gravity. They published on their discovery in 'Nature' on 1 October.

OB associations are loose groups of young, massive stars. They constitute the last stage of the massive starformation process, and the context in which new stars are formed.

Stellar feedback is a crucial ingredient in the evolution of galaxies.

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.

One of the most important puzzles in modern astrophysics is the nature of dark matter.

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

The focus of this thesis is how stars like our Sun and planets like Jupiter, Saturn, and Earth are formed.

When a physical system possesses symmetries, these are often accompanied by a representation of the symmetry group on a Hilbert space. Group representations on Hilbert spaces have been extensively studied.

On 22 June, Anneke Koning defended the thesis 'Return to sender: a multi-method study of guardianship against transnational sexual exploitation of children'. The doctoral research was supervised by Joanne van der Leun, Masja van Meeteren and Johan van Wilsem.

Promotor: S.M. Verduyn Lunel, Co-Promotores: S.C.Hille, O.W. van Gaans

Leiden Observatory is the astronomical institute of the Faculty of Science of Leiden University.

An unexpected phenomenon in a merger of a cluster of galaxies. An international team of astronomers led by Francesco de Gasperin has witnessed a gas tail of a galaxy, that slowly extinguished, but then lightened up again

An international team of researchers observed the full extent of the evolution of hot gas produced by an active black hole for the first time. As it evolves, the hot gas encompasses a much larger area than previously thought and even impacts objects residing at great distances. Their study is published…

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.

The Astronomy and Data Science master’s specialisation at Leiden University combines advanced Astronomy courses with relevant courses from the Computer Science programme at Leiden University.

The ability to collect and interpret huge quantities of data has become indispensable to society and academia. Leiden University is a knowledge and expertise centre for data science that places the emphasis on interdisciplinary collaboration and innovation.

Three projects with Leiden researchers are to receive a subsidy from NWO for the construction or renovation of large-scale research facilities. They will be working on electron microscopy, an X-omics initiative and an X-ray telescope. The projects are part of the National Roadmap for Large-Scale Scientific…

At Leiden Observatory, researchers investigate the origin of stars and their planetary systems. They detect and characterize planets around other stars (exoplanets). They study how stars and planets form. And they follow molecules from interstellar clouds to nascent planet systems. This way they address…

The LOFAR e-infrastructure group is responsible for deploying and maintaining LOFAR processing on distributed e-infrastructure. A co-operation between SURFsara, Leiden University and ASTRON, the group develops software to integrate the LOFAR stack with processing pipelines. Our software can schedule…

Met AI kunnen nieuwsredacties razendsnel beelden genereren — maar tegen welke prijs? Dit onderzoeksrapport opgesteld door prof. dr. Jaap de Jong, dr. Astrid Vandendaele, Maartje van der Woude en Stef Arends (Universiteit Leiden), baseert zich op 59 interviews met beeldmakers, redacteurs en experts uit…

The Film Club is a ProParte sub-group.

From the Big Bang to superconductivity. Many ground-breaking discoveries have been made in Leiden University’s long history.

We are grief-stricken that our PhD student Maolin Zhang passed away during the early morning of January 17th 2019. He died during a terrible fire that took place at his house in Hillegom.

Knowledge that benefits society is the domain of the Faculty of Governance and Global Affairs (FGGA). FGGA provides high-quality interdisciplinary education on and research into social and governance issues such as terrorism, organisation of public administration, climate change and economic crises.

Promotor: A.P. IJzerman

Promotor: A.P. IJzerman

Managing scarcity to serve the public interest is a classic government task. An important way to execute this task is by allocating individual rights that are only available in limited quantities, such as CO2 emission allowances, gambling licences, subsidies, radio frequencies, public contracts and…

Volgens hoogleraar staatsrecht Wim Voermans is een uitslag, waarbij twee of meer partijen exact gelijk eindigen in de Kamerverkiezingen, uniek en dat vraagt om een uiterst zorgvuldige aanpak, zegt hij in Sven op Radio 1.

The Sun and all the stars in the night sky reside in the Milky Way galaxy. In the at-rest reference frame of the Galaxy, typical stars travel with velocities of about 100-200 kilometres per second.

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

The Leiden astronomer Huib van Langevelde) has been selected as the new director of the Event Horizon Telescope (EHT). The EHT is a collaboration involving about 350 scientists from 18 countries. It combines the ALMA array in Chile with sub-millimeter telescopes around the world and published the first…

The Old Obervatory Leiden is one of the partners of the local learning ecosystem ‘Verwonder om de Hoek’, an educational platform from Leiden that lets school children and families wonder about the world of Nature, Science, Technology and Sustainability. On this page you will find the educational programmes…

Leiden astronomer Tim de Zeeuw has been appointed Knight in the Order of the Dutch Lion. He received the distinction on 14 May to mark his departure as Director General of the ESO European Astronomy organisation. The celebration took place during the 2018 Dutch Astronomers Conference in Groningen.

Leiden was European City of Science in 2022: for a year Leiden was the capital of European science. Leiden University was a proud partner of Leiden2022.