The increasing competition in the automotive industry requires the tailored, swift development of technologically sophisticated vehicles. Therefore, the computationally expensive state-of-the-art simulation technologies are combined with optimization algorithms. An example of a real-world optimization…

How is Indian foreign policy made? This special issue of the journal India Review, edited by political scientists Nicolas Blarel (Leiden University) and Avinash Paliwal (SOAS University of London) features a number of interesting case studies that bridge the gap between Foreign Policy Analysis and India’s…

Uncertainty and noise are frequently-encountered obstacles in real-world applications of numerical optimization. The practice of optimization that deals with uncertainties and noise is commonly referred to as robust optimization.

All supermassive black holes in the centres of galaxies appear to have periods when they swallow matter from their close surroundings. But that is about as far as the similarities go. That's the conclusion reached by British and Dutch astronomers from their research with ultra-sensitive radio telescopes…

Promovendus Tristan Mostert onderzocht de ‘kruidnageljacht’ op de Ambonse eilanden en ontdekte dat VOC-gouverneurs extreme tactieken gebruikten.

Ontdek hoe informele gesprekken en lichaamstaal beleid beïnvloeden. Universitair docent Lianne Visser onderzoekt informele besluitvorming wereldwijd.

Hoe kan het dat universele mensenrechten wereldwijd niet hetzelfde in de praktijk worden gebracht?

Een staatsrechtelijk unicum is in politiek Den Haag ontstaan, nu in navolging van minister Veldkamp alle NSC-bewindslieden zich hebben teruggetrokken uit het demissionaire kabinet. Volgens hoogleraar staatsrecht, Wim Voermans, ‘is dit geen goed nieuws voor de bestuurbaarheid van het land’, zegt hij…

Een knelpunt bij burgerinitiatieven is dat de wet voor initiatiefnemers vaak een barrière vormt. Esmee Driessen, gastdocent Staats- en bestuursrecht en expert in burgerparticipatie, bespreekt twee belangrijke verbeterpunten uit haar proefschrift, waarop zij in juni 2024 promoveerde, in OverheidvanNu…

Wat zie jij als je verderkijkt? Hoe ziet studeren aan de Universiteit Leiden in 2075 eruit? We nodigen je uit om mee te doen met Verderkijkers.

Sinds vorig jaar staan er gekleurde pilaren op de universiteitscampus. Met deze ‘Act of Kindness Pillars’ wordt eenzaamheid bij studenten tegengegaan.

We don’t understand how some materials become superconducting at relatively high temperatures. Leiden physicists have now found a surprising connection with auxiliary black holes. It enables us to use our knowledge of black holes on the mystery of high-temperature superconductivity. Publication in Nature…

The Event Horizon Telescope (EHT) collaboration receives the 2021 Royal Astronomical Society Group Achievement Award. In April 2019, the EHT team presented the first-ever photograph of the shadow of a black hole. Leiden professor Huib-Jan van de Langevelde has been director of EHT since last year. Three…

Two black holes, in close orbit around each other. Have they slowly drifted together, or did they emerge from two orbiting stars? Together with to colleagues form Amsterdam, Leiden astronomer Simon Portegies Zwart calculated that the second scenario is rather likely.

The faculty's research on the ancient rock art found in Jordan's Black Desert has recently been covered by several news and science websites.

The worldwide protests following the police violence in the United States show how deep-rooted and wide-spread racism is across the world. As an academic institution doing research on law & society, the Van Vollenhoven Institute is very much aware of systemic racism and speaks out in support of these…

‘Space Antenna LISA will open an unprecedented window on the Universe,’ says astronomer Elena Maria Rossi. The mission will be the first one to detect Gravitational Waves from space. These can tell us more about the beginning of our Universe and the formation of black holes. With an NWO grant of twelve…

When a star gets too close to a supermassive black hole, it is torn apart by strong tidal forces in a tidal disruption event (TDE).

Leiden astronomy Master's student Arend Moerman has received an A+ for his thesis research on the simulation of chaotic interactions of three black holes. The simulations, which he carried out together with his Leiden and Oxford colleagues, show that lighter black holes tend to slingshot each other…

In this thesis new methodologies are developed for the detection and systematic study of radio sources in the early universe. This allows us to gain a deeper understanding of the formation and evolution of galaxies, the activity of supermassive black holes, and the final phase transition of our universe:…

Elena Maria Rossi is fascinated by black holes. Her appointment as a professor was a long-held wish, partly because there are so few female professors in her field. ‘My appointment is also a milestone for the Leiden Observatory.’

The first photo of a black hole and measuring anxiety in the brain... From 13 until 22 May we're serving a free slice of science with your pizza.

The Dutch Black Holes Consortium receives 4.9 million euros from NWO for unravelling the mysteries of black holes and other mysteries of the universe. The Astronomy and Society group at Leiden Observatory is affiliated to use the leading research to introduce people of all ages and background, and children…

Delve into the depths of black hole imaging as anthropologist Rodrigo Ochigame unveils the human decisions shaping its portrayal. Explore four alternative color choices at the 'Towards the Black Hole' exhibit, now showing at Rijksmuseum Boerhaave, Leiden.

Black Theatre, activist theatre by and for black South Africans, flourished under apartheid. However, according to Francis Rangoajane, the democratisation of South Africa has in no way diminished the importance of this art form. PhD defence 16 November.

With the help of software that mimics a human brain, ESA’s Gaia satellite spotted six stars zipping at high speed from the centre of our Galaxy to its outskirts. This could provide key information about some of the most obscure regions of the Milky Way.

Historian Karwan Fatah-Black researches the Dutch colonial past, and regularly joins in the public debate about this. He has been admitted to The Young Academy for his dedication to academia and society.

How are people of color represented in art collections? And do young people of color feel that museum collections reflect their norms and values? Developmental psychologist Carolien Rieffe is invited to serve on the Expert Group ‘Musea bekennen kleur’ because of her knowledge of children and young p…

The Leiden University Medical Center (LUMC) has received a 4m grant for the ECOTIP project. In this project researchers will study how our physical environment affects our health. The aim is to find tipping points: at what point is there a real lack of greenery, healthy food or clean air in a neighb…

Grondstoffen werden vroeger over duizenden kilometers afstand vervoerd. Waarvoor werden ze geruild en waarom sloten mensen in West-Azië zich aan bij deze handelsnetwerken?

Twee mannen zijn veroordeeld tot zes maanden cel voor het projecteren van racistische leuzen op de Erasmusbrug tijdens de jaarwisseling van 2022 naar 2023. Universitair hoofddocent Marloes van Noorloos sprak met de Volkskrant over de strafbaarheid van dergelijke leuzen.

Een orang-oetan lacht niet gauw hard om een video waarin een soortgenoot dat ook doet. Een peuter doet het meer dan een volwassene, een Japanner weer iets minder. Chris Riddell leerde uit zijn vele experimenten ook dat geduld loont. Hij promoveert 16 september.

Hoogleraar Radicalisation Studies Tahir Abbas wil mensen er bewust van maken dat radicalisering voortkomt uit hoe wij als mensen samenleven

50 years ago Lauterbur published the basic principle of MRI. Sine then MRI has become more expensive. Professor Andrew Webb describes what is needed to make MRI available for everybody.

The composition Popular Archeology: Volca #1 (for percussion) by composer and ACPA PhD researcher Aart Strootman, has been awarded the Black Pencil in Schokland Prize.

The radio sky harbours both galactic and extragalactic sources of arcminute- to degree-scale emission of various physical origins. To discover extragalactic diffuse emission in the Cosmic Web beyond galaxy clusters, one must image low–surface brightness structures amidst a sea of brighter compact fore-…

Following the Big Bang, structure in the Universe started collapsing under the force of gravity. This resulted in the formation of the first stars, galaxies and clusters of galaxies.

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

An international team of astronomers led by Dutch scientist Martijn Oei has discovered the largest pair of jets from a black hole ever seen. The 'jumbojets' extend a combined length of 140 Milky Ways. The Leiden Observatory played a prominent role in this research. The publication will feature on the…

What physics controls the properties of quantum matter, such as how electrons flow inside high-temperature superconductors? This question has captivated the physics community and industry for decades, in part due to the great technological potential such materials have, but also because they have resisted…

For only the second time ever, astronomers have linked a neutrino to an object outside our Milky Way. These observations were made using telescopes both on Earth and in space. The researchers, including Leiden astronomer Sjoert van Velzen, were able to trace the neutrino to a black hole that is devouring…

She bridges the gap between research and practice, has excellent research skills and is pleasant to work with: these words of praise were lavished on Sabine van der Asdonk (29) when she won the Gratama Science Prize 2021 in June. In this interview she explains more about her research into vulnerable…

The thesis addresses the long-term dynamical evolution of hierarchical multiple systems.

Cutting-edge technological innovation for businesses and consumers, enabled by top-tier research on space and the quantum world.

Pulsars were first discovered in 1967 and since then the population has grown and expanded over several wavelengths.

A European team of astronomers has discovered the largest stellar black hole in the Milky Way. It is more than thirty times as massive as our sun and is located in the constellation of Aquila, about two thousand light-years from Earth. The astronomers stumbled upon the black hole by chance while preparing…

In the 60s and 70s, Black Power groups were also active in the Kingdom of the Netherlands. This is what PhD candidate Debby Esmeé de Vlugt has discovered.

An international team of astronomers, including Leiden PhD student Elia Pizzati, has observed several ancient quasars that, surprisingly, appear to be floating alone in the early universe (less than a billion years after the Big Bang). Until now, astronomers, based on models, assumed that quasars are…

It all started with demonstrations protesting about the death of George Floyd from police brutality in Minneapolis, but the Black Lives Matter protest is spreading like wildfire across the whole of the US. Every day, thousands of people are taking to the streets. We asked American Studies expert Sara…

The death of George Floyd at the hands of the police may have sparked the Black Lives Matter protests in the United States and here in the Netherlands, but they are about more than that alone. We asked Karwan Fatah-Black, a historian who specialises in the Dutch colonial history, for his analysis. ‘We…