What is the connection between materials with weak and strong gravitational interactions?

The first direct detection of gravitational waves opened the possibility of mapping the Universe via this new and independent messenger.

We explored the Universe using weak gravitational lensing, a phenomenon that occurs when light from distant galaxies is bent by the gravitational fields of closer cosmic objects, much like how a lens distorts light.

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

Promotor: Prof.dr. S. Portegies Zwart

Of all the mass in our Universe, 80% is thought to consist of a hypothetical and invisible substance called dark matter (DM).

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.

In this thesis we study the landscape of gravitational models which modify GR by introducing an additional scalar degree of freedom (d.o.f.) to source Cosmic Acceleration.

Video interview with Subodh Patil, the new assistant professor in Theoretical Cosmology, about the gravitational waves, hidden universes, music, and whether Dutch, Danish and German fit into one brain.

Leiden scientists and companies receive 1.37 million euros to develop technology for the Einstein Telescope. This underground telescope will measure gravitational waves and must therefore be extremely sensitive. To that end, the consortium conducts research on the damping of vibrations at temperatures…

‘I could hardly believe my ears when I heard that we had been awarded the Gravitation grant,’ says Berna Güroğlu, professor of the Neuroscience of Social Relations. This grant is awarded by the state, via NWO, to pioneering scientific top research. In terms of grants, this really is something special,…

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.

It's one of the big cosmology debates: the universe is expanding, but how fast exactly? Two available measurements yield different results. Leiden physicist David Harvey adapted an independent third measurement method, using the light warping properties of galaxies predicted by Einstein. He published…

Three major research projects involving Leiden scientists have been awarded a grant from NWO’s Gravitation Programme. The projects are on innovation processes, organs-on-chips and quantum software.

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.

Leiden University is involved in five new NWO Gravitation projects. Two relate to mental disorder and the remaining three to a healthy lifestyle, the combination of human and artificial intelligence, and the special relationship between plants and microbes.

Three Dutch-Belgian telescopes have started operating at the ESO La Silla Observatory in Chile. This so-called BlackGEM array will scan the southern sky to hunt for cosmic events that produce gravitational waves, such as mergers of neutron stars and black holes. Leiden astronomer Rudolf le Poole is…

The European Space Agency (ESA) has approved the proposal for gravitational wave detector LISA. The launch for the space detector is planned in 2034. ‘A dream that comes true,’ says astronomer Elena Maria Rossi.

How can young people grow up successfully and contribute to the present and future society? The consortium that is researching this will receive 22 million euros within the scope of the Gravitation programme.

The project Hybrid Intelligence receives 19 million euros from the Gravitation programme of the Dutch Research Council (NWO). The consortium consists of six Dutch universities and combines human and artificial intelligence, aiming to amplify human intelligence instead of replacing it. Leiden professors…

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.

The Advanced Nano-electrochemistry Institute Of the Netherlands (ANION) consortium will receive 23.6m euros in Gravitation funding for research on important electrochemical processes for energy transition. An additional four consortia with members from Leiden have also been awarded funding.

The project MiCRop receives 20.3 million euros from the Gravitation programme of the Dutch Research Council (NWO). MiCRop will unravel the microbial community around crops. This knowledge will help to develop more sustainable crops that require fewer fertilizers and pesticides. Leiden professors Jos…

The ultimate goal of cosmologists is to find a cosmological model able to explain the current observational data.

Gravitation programme grant Co-applicants Bernet Elzinga en Andrea Evers are two of the captains of the six teams, all led by main applicant Anita Jansen, Maastricht University.

Opportunities, challenges, and future perspectives of people-centered approaches in dynamic historic urban landscapes

This minor combines the domains of design thinking and technology-enhanced learning and teaching with interdisciplinary group work.

The 'living lab' Vrouwe Vennepolder is situated just north of Leiden, The Netherlands, and aims to find ways to improve the agriculture of the future.

This book offers a new direction for the study of contemporary Islam by focusing on what being Muslim means in people’s everyday lives.

A large, 64+ person space with multiple working zones in the Schouwburgstraat building, Den Haag. Tables fold and wheel, and chairs are also on wheels. There are multiple movable whiteboards which allow group working in various sizes. Windows and tables are additional writing surfaces. There is also…

Bronze Age settlement sites in the Dutch river area (c. 2000-800 BC)

Living labs make it possible for citizens to participate in research for sustainable development of their environment. This way citizens, together with scientists and stakeholders, create local conditions for food production, healthy environment, and biodiversity.

What is the effect of pesticides, fertilizers or plastic on water quality? And how do wind and rain affect the data? These are just some of the things that Leiden environmental scientists study in the 32 ditches of the Living Lab.

Priya Swamy defended her thesis on 27 October 2016

Promotor: Koen Kuijken Co-promotor: Henk Hoekstra

At LUC, we lovingly call our building AvB, after the Anna van Buerenplein on which we are located. DUWO is LUC's housing partner. They will be in charge of your housing contracts and studio apartments. You can find important information below regarding moving in and contracts.

Professor Frank den Hollander has been awarded a 10-year grant through the NWO Gravitation program, jointly with colleagues from the University of Amsterdam, the Center for Mathematics and Computer Science in Amsterdam, and the Technical University of Eindhoven.

Which circumstances have determined the transition to, or the dominance of, a particular type of military employment in different societies at different times?

Galaxies form and live inside dark matter haloes. As a consequence, they are exposed to the tidal fields generated by the surrounding matter distribution: this imprints a preferential direction to the galaxy shapes, which leads to a coherent alignment on physically close galaxies, called intrinsic a…

Visualization of biomolecules in living cells by tagging with gold nanoparticles.

Leiden University is developing new short stay living space for foreign guests and employees. De Kloksteeg is currently the last of four projects that has been renovated by the Leiden University Real Estate directorate since 2017. The Service Centre International Staff (SCIS) is responsible for rental…

The League Against Imperialism: Lives and Afterlives explores the dramatic and engaging story of a global institution that brought together activists across geographical and political borders for the goal of eradicating colonial rule worldwide.

ERC Starting Grant: The Van Manen Project. This five year project (2023-2028) is made possible with an ERC Starting Grant. It aims to (digitally) reunite all parts of the Van Manen Collection. This enables us to study it as a whole, helping us to understand the process of collection formation. More…

The European Space Agency (ESA) has published an interim data release from Gaia, the space telescope mapping out the Milky Way in 3D. The first scientific papers published today reveal half a million stars in the Omega Centauri globular cluster, nearly 400 candidate gravitational lensers and the positions…

The Hague is a real student city and has everything you’ll need to turn your time as a student into the time of your life.

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.

The Secret Life of Art Works. Exploring the Boundaries between Art and Life is the first collection of essays to present case studies from the visual arts, architecture, sculpture and numismatics, and to engage critically with theoretical perspectives from art history, psychology, aesthetics and ant…

The dissertation describes TEM experiments on heterogeneous catalysts.