This book is the first systematic analysis of the changes in the use of goods and services by households of Black South Africans since the early nineteenth century.

This summer, the Faculty of Humanities is once again offering a wide range of summer schools for staff and students. From acting to Indian linguistics: there is something for everyone.

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…

What is dark matter? How do supermassive black holes form? ‘Primordial’ black holes might hold the answer to these long-standing questions. Leiden and Chinese cosmologists have identified a new way in which these hypothetical objects could be produced just after the Big Bang. Publication in Physical…

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.

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…

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.

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.

NASA’s telescope SOFIA has provided a new glimpse of the chemistry in the inner region surrounding massive young stars where future planets could begin to form. Leiden PhD candidate Andrew Barr writes about it in the Astrophysical Journal. The scientists found massive quantities of water and organic…

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.

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.

Astronomers have used data from the European Gaia Space Telescope to discover 55 high-speed stars launched from the young star cluster R136 in the Large Magellanic Cloud, a satellite galaxy of the Milky Way. This increases tenfold the number of known “runaway stars” in this region. The team of astronomers,…

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…

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.’

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,…

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?

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

This thesis explores the theoretical and observational properties of distant massive galaxies that harbour active black holes in their centres and shine brightly at radio wavelengths.

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…

This summer the department of Labour Law at Leiden University will start a new tradition of an annual summer school addressing current issues in labour law from an international, transnational and European point of view. With a mixture of lectures, seminars and a field trip, topics will be explored…

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.

'Every year the courses are different, and there are new things to learn.' The 6th Leiden Summer School in Languages and Linguistics from 18-29 July this year has attracted 120 participants, 90 international and 30 from the Netherlands.

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…

From the Republic of Moldova to Italy and from Indonesia to Greece, students from all over the world participated in the Bio-Pharmaceutical Science Summer School 2017. The students got a comprehensive overview of the education and research performed within the LACDR. ‘I am very happy to be here,’ says…

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

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.

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…

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…

‘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…

What motivates people to provide help to, or seek help from other groups? And what are the psychological consequences of receiving help from another group?

The aim of 'Intergroup helping' is to provide an overview of psychological research on intergroup helping, such as between countries or organisations, or in case of international crises. Co-editor Esther van Leeuwen has been an assistant professor at Leiden University in Social and Organisational psychology.…

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…

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…

Studying abroad and going on an exchange is a great way to broaden your horizons and explore new places, cultures, and fields of study. In addition to a full-semester exchange, there are many other possibilities such as a summer school or an internship. For example, Bart Geldermans, Public Administration…

De online cursis begint op maandag 12 november en de inschrijving is nu geopend.

To mark the 900th anniversary of the city of Utrecht, the summer feast of city patron Saint Martin of Tours will be celebrated on 3 and 4 July 2022. The festival is a birthday gift from Utrecht University to the city, initiated by Saint Martin expert Els Rose.

Amici Cantus Gregoriani is organizing the second edition of the Gregorian Summer Course, in close collaboration with the Royal Conservatoire in The Hague. This course will take place from August 29 to September 2, 2022 in the Kloosterkerk, also in The Hague.

To mark the 900th anniversary of the city of Utrecht, the summer feast of city patron Saint Martin of Tours will be celebrated on 3 and 4 July 2022. The festival is a birthday gift from Utrecht University to the city, initiated by Saint Martin expert Els Rose.

The Summer School on Christian Apocryphal Literature 2022 hosts students at graduate and post-graduate level (MA students, PhD students, postdoctoral researchers) to study current directions in the study of Christian apocryphal Literature. It takes place in Strasbourg from 30 May until 2 June 2022.…

The Medieval Academy of America (MAA) is excited to announce the launch of a new Summer Research Program for early PhD or early PhD-track students. The 2022 Summer Research Program will convene over Zoom, over the course of six weeks in July and August. The Summer Research Program will culminate with…

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…

Van 4 tot en met 8 juli 2022 verzorgt Radboud Erfgoed in Nijmegen een Summer School (in het Nederlands) over erfgoedcollecties, hun geschiedenis, over sporen van gebruik en wat die ons leren over de mensen die de boeken en objecten verzamelden die nu onze collecties vormen. De deelnemers gaan aan de…

Researchers at Leiden Observatory study the fundamental physics that creates structure in the Universe. These processes collect matter into galaxies and gas into stars. With the use of powerful telescopes and advanced calculations and computer simulations, Leiden astronomers seek to understand the origin,…

Researchers at Leiden Observatory study the fundamental physics that creates structure in the Universe. These processes collect matter into galaxies and gas into stars. With the use of powerful telescopes and advanced calculations and computer simulations, Leiden astronomers seek to understand the origin,…

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.

When galaxies collide, do the black holes at their centre form a supersized black hole? This is what we think happens, but it's not as simple as that, according to Simon Portegies Zwart. Zwart, computer scientist and astronomer, has been awarded a VICI grant to research this phenomenon.

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…