Astronomer Henk Hoekstra has been appointed Professor Observational Cosmology at the Leiden Observatory with effect from 1 August.

The aim of the project is to contribute to the process of archive formation ongoing in Post-Apartheid South Africa through the inclusion of photographs that have been either unacknowledged or excised from the national canon.

On 3 December the Europa Institute organised a debate about the figure of Black Pete. The central theme of the debate was the role which the law can play in deciding the future of Black Pete.

They are often referred to as ‘The Oscars of the Natural Sciences’: the Breakthrough Prizes in Life Sciences, Fundamental Physics and Mathematics. This year, the prize for physics went to the Event Horizon Telescope team, which took the first-ever picture of a black hole. Four Leiden astronomers were…

Dr. Henk Schulte Nordholt, working at KITLV and LIAS, has been appointed extraordinary professor of Indonesian history for a five-year period.

With the passing of Henk Jan de Jonge on 16 April 2022, Leiden University has lost one of its most characteristic, learned and devoted professors.

On August 18, 2022, Henk Bodewitz, distinguished Indologist and emeritus professor of Sanskrit at Leiden University, passed away in his hometown of Utrecht.

82 years ago Queen Wilhelmina fled to England. Henk te Velde tells about her on the Australian radio show 'Nightlife'.

Physicists understand little about quantum matter, which is a building block of future quantum computers. Theorists have now discovered that black holes with ‘dreadlocks’ harbor a similarly exotic order pattern, which makes calculations on quantum matter easier. Publication in Physical Review Letter…

An international team of astronomers has published a map of the sky showing over 25,000 supermassive black holes. The map, to be published in the journal Astronomy & Astrophysics, is the most detailed celestial map in the field of so-called low radio frequencies. The astronomers, including Leiden astronomers,…

Meet the newest Full Professor at the Leiden Observatory: Joe Hennawi. All the way from Santa Barbara, California, Hennawi will strengthen the astronomy institute. In Leiden, he will use his recent ERC Advanced Grant to study how supermassive black holes come into existence.

Promotor: H.J.A. Rottgering, Co-Promotor: R.J. van Weeren

All kinds of reasons have been put forward for why plants apparently fail to make maximum use of the available light. None of these reasons can explain why after two billion years of evolution they are not black, like industrial photovoltaic solar cells. Are we missing something?

Older children more frequently link Black Pete with a black person. Both younger and older children think positively about him. This is the conclusion of a study conducted by Judi Mesman, Professor of Diversity in Parenting and Development.

Scientists are asking your help to find the origin of hundreds of thousands of galaxies that have been discovered by the largest radio telescope ever built: LOFAR. Where do these mysterious objects, which extend for thousands of light-years, come from? A new citizen science project called LOFAR Radio…

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.

An international team of astronomers has witnessed a cosmic weather event that has never been seen before.

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…

‘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…

An international team of astronomers led by Violeta Gámez Rosas (Leiden University) has observed a supermassive black hole hidden in a ring of dust. This discovery fits the idea that the so-called active centers of galaxies are much more similar than observations show, because the viewing angle from…

In 'Dutch Atlantic Connections, 1680-1800', Gert Oostindie and Jessica V. Roitman, both of the Royal Netherlands Institute of Southeast Asian and Caribbean Studies (KITLV) and also affiliated with the History Institute of Leiden University, assemble an internationally acclaimed selection of authors,…

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.’

Finally we know for sure that there is a black hole at the centre of our own galaxy. Today, astronomers unveiled the first ever photo of Sagittarius A*, a super-massive object at the centre of the Milky Way. This picture could only be taken thanks to the cooperation of telescopes worldwide.

In 2017 the book Artists in the University-Positioning Artistic Research in Higher Education by Jenny Wilson was published by Springer. Prof.dr. Henk Borgdorff wrote the foreword, which includes part of his inaugural lecture.

Prof.dr. Henk te Velde is appointed as the new President of the Association for Political History.

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.

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…

World-famous among astronomers, humble, and averse to conventions. On 23 April, the Dutch biography about Henk van de Hulst was published. Biographer Dirk van Delft: ‘This remarkable man deserved a biography.’

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.

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…

On 22 November 2018, Henk Hulshof and dr. Yannick van den Brink from the Department of Child Law participated in a juvenile justice conference in Ulaanbaatar, Mongolia. The central theme of the conference was ‘establishing a child-friendly criminal justice system in Mongolia’.

For the first time, astronomers have managed to take a photo of a supermassive black hole and its shadow. They used the Event Horizon Telescope (EHT), a worldwide network of eight radio telescopes that together form a virtual telescope the size of the earth. The news was presented in six press conferences…

Stars orbit black holes while jumping up and down. This is the prediction of a theoretical model developed by Leiden physicist Satish Kumar Saravanan, based on Einstein’s theory of relativity. He defends his PhD thesis on July 7th.

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 brightness peak of the ring around M87's supermassive black hole has shifted 30 degrees counterclockwise in a year. This is shown by new images released by the Event Horizon Telescope consortium.

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…

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…

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…

One unravels the origin of the largest black holes in the universe, the other investigates the influence of stellar wind on the atmosphere of exoplanets. Both Elena Maria Rossi and Aline Vidotto receive a Vici grant for their research into the mysteries of the universe. ‘I have no idea yet how we can…

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…

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

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.

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…

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…

These are the proposed research projects for LEAPS 2019. Please note that not all projects will go ahead and some may still be added in the near future. Final funding decisions lie with the Faculty sponsors. And please make a note that if you are interested in an ESA project, to check if your state…

This thesis aims to enhance our understanding of galaxies by testing theoretical models of galaxy formation against observations, particularly in the cases of extreme systems which have been found to have an excess of baryonic mass in their central regions, in the form of either supermassive black holes…