On behalf of the Dutch astronomical community, we unequivocally condemn the brutal killings of Ahmaud Arbery, George Floyd, and Breonna Taylor and countless others and instances of racism.

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.

This dissertation is a study of archaeological remains left behind by nomadic communities in the Black Desert, situated in the northeast of modern Jordan.

This volume considers the military architecture and its impact on local communities in Rome's eastern frontier, which stretched from the north-east shore of the Black Sea to the Red Sea.

Lecture, Oort lecture

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…

Learning is easiest out of interest. But interest is often multiple, and expands in various directions. How do you organize education accordingly?

This new article by Monica Kaminska is part of a special issue for Journal of Cybersecurity, based on a selection of contributions from THe Hague Program for Cyber Norms' 2019 Conference.

The studies reported in this thesis were situated in the context of an innovation of Dutch secondary school biology curricula. As in any innovation, the practical knowledge of teachers determine the outcomes through the decisions they make while planning and teaching their lessons. The aim of the studies…

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?

Unmanned aerial vehicles (UAVs), often referred to as drones, have become easy and inexpensive to buy, and it is generally expected that the use of drones by private individuals, businesses and public authorities will increase tremendously in the coming years. This raises questions as to what is technologically…

Most courses do not have any admission requirements. À la carte courses, for instance, can be attended regardless of your former education. However, pre-university education level knowledge is desirable.

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,…

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…

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,…

Subproject of the ERC project 'Challenging the Liberal World Order from Within: The Invisible History of the United Nations and the Global South'.

The Rise and Decline of an Iberian Bourgeoisie is one of the first long-term studies in English of an Iberian town during the late medieval crisis. Focusing on the Catalonian city of Manresa, Jeff Fynn-Paul expertly integrates Iberian historiography with European narratives to place the city's social,…

Family, Work, and Household presents the social and occupational life of a late medieval Iberian town in rich, unprecedented detail. The book combines a diachronic study of two regionally prominent families—one knightly and one mercantile—with a detailed cross-sectional urban study of household and…

Outflows are crucially important for the gas budget and evolution of luminous star-forming galaxies and AGNs, with observed mass outflow rates of the same order as the star formation rate. Greater star formation and black hole growth lead to more intense feedback and outflows, resulting in self-regulated…

Our research primarily focuses on the early universe and its origins in theories that go beyond the Standard Model of particle physics.

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:…

PhD defence

From black holes to artificial intelligence and from drug research to data science: welcome to the fascinating world of the Faculty of Science. Our researchers, students and guests regularly give public lectures about their work. You are welcome to attend.

This thesis addresses the problem of designing performance and energy efficient embedded streaming systems, that is, systems which process a stream of input data coming from the environment and generate a stream of output data going into the environment.

The growing demand of energy indicates that global energy resources in the form of fossil fuels will not be sufficient in the future. In order to solve potential future energy problems development of a sustainable hydrogen economy is highly desirable.

The long-held desire - to link structure directly to function and to explain molecular mechanisms based on basic chemical or physical principles - is finally coming closer, satisfying not only our scientific curiosity but also offering new solutions to the many challenges in the field of health, energy…

Victorian Fairy Tales

Great Auditorium Organ Foundation is a Public Benefit Organisation (Algemeen Nut Beogende Instelling, ANBI)

Everything you need to know about the minor Gender and Sexuality in Society and Culture.

Lecture

Dr. Ahmad Al-Jallad and Prof.dr. Peter Akkermans have been awarded with the NWO Free Competition Grant for their research project 'Landscapes of Survival: Pastoralist Societies, Rock Art and Literacy in Jordan's Black Desert, c. 1000 BC to 500 AD'. Together, they study settlements, burials and inscr…

The chaotic years after the Civil War are often seen as a time of uniquely American idealism—a revolutionary attempt to rebuild the nation that paved the way for the civil rights movement of the twentieth century. But Adam Fairclough rejects this prevailing view, challenging prominent historians such…

It is a common technique in global optimization with expensive black-box functions to learn a surrogate-model of the response function from past evaluations and use it to decide on the location of future evaluations.

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,…

Freshwater and brackish water ecosystems are arguably the most vulnerable ecosystems on earth, due to concentrated human developments in and around them. The Pontocaspian (PC) region located at the border of Europe and Asia contains a variety of brackish water ecosystems and unique inhabitants, known…

Everything you need to know about the minor Cultural Memory of War and Conflict.

Towards self-regulated learning of speaking skills in foreign languages in secondary schools: an adaptive and practical approach.

Pastoralist Societies, Rock Art and Literacy in Jordan’s Black Desert (200 BC to 800 AD)

At Leiden University College (LUC), engagement with international societal partners occurs through research, education, and internships, fostering mutually beneficial collaborations with NGOs, public service institutions, and international counterparts.

Immerse yourself: read books, listen to podcasts and watch films about racism, discrimination and the colonial past.

Would you like to do something for the victims of the war in Ukraine? Several actions have been set up to help the people in Ukraine. Read below what you can do.

Lecture

This project investigates diversifying and democratizing heritage through practices of “home-making”. We propose to research ‘home-making’ as a non-binary practice of combining memories of roots and routes, dwelling in the present, and desires for the future.

Authentication Processes in Ethnographic Museums

Recent fieldwork at the vast desert region in north-eastern Jordan has revealed an immensely rich heritage of an area that is difficult to access and archaeologically less known. Professor Peter Akkermans was interviewed about his groundbreaking research in this area, known as the Black Desert.

PhD defence