An overview of Professional Associations and Journals

Promotor: Prof.dr. M.K. Richardson

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…

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.

If Dutch cinema is examined in academic studies, the focus is usually on pre-war films or on documentaries, but the post-war fiction film has been sporadically addressed.

The Leiden Slavery Studies Association (LSSA) is dedicated to promoting a greater understanding of slavery and post-slavery in any period and any geographical region.

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…

Kaveh Lahabi's lab explores the exotic physics of quantum materials, whose underlying physics seems to have more in common with elementary particles and black holes, than ordinary metals and semiconductors.

Multiple stars, that is two or more stars composing a gravitationally bound system, are common in the universe.

In his book The magic of healing, Willem van der Does talks about 14 pioneers in the history of psychiatry. These pioneers all had one thing in common: they started with a radical idea which led to great enthusiasm.

The Jeugdwerkgroep is a national astronomy association for young people who are interested in astronomy. The Leiden section organizes a monthly meeting in the Old Observatory Leiden.

Part of ‘Moralising Misfortune: A comparative anthropology of commercial insurance’, an ERC Consolidator project of Erik Bähre.

For hundreds of years, the island of Sri Lanka was a crucial stopover for people and goods in the Indian Ocean. For the Dutch East India Company, it was also a crossroads in the Indian Ocean slave trade. Slavery was present in multiple forms in Sri Lanka—then Ceylon—when the British conquered the island…

Elizabeth Stuart is one the most misrepresented – and underestimated – figures of the seventeenth century. Daughter of James VI & I, she was married to Frederick V, Elector Palatine in 1613 – they were crowned King and Queen of Bohemia in 1619, only to be deposed and exiled to the Dutch Republic in…

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,…

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-…

Promotor: Prof.dr. J. Zaanen, A. Parnachev

Team Economic and Social History

Although nanoparticles are extensively used in various applications like consumer products and have most probably entered the environment, little is known about the effects of these particles on living organisms.

The high velocity tail of the total velocity distribution of stars provides essential insight into fundamental properties of the Galaxy.

Mining the unusually rich diaries, memoirs, and poems written by Netherlandish Catholics, Judith Pollmann explores how Catholic believers experienced religious and political turmoil in the generations between Erasmus and Rubens.

Since the Second World War, intelligence and security services have played an important role in policy and decision making, particularly with regards to a state’s national security. In this minor programme you study both the organisations, their working methods, their analysis techniques, as well as…

From Apartheid in South-Africa to 9/11 in the United States: there is not a single culture that is not shaped by the memory of war or conflict. The minor Cultural Memory of War and Conflict focuses on how such memory cultures influence and shape societies today.

This Leiden Law School page provides various information on Diversity & Inclusion at the faculty. It explains why D&I are key objectives, lists our current D&I projects, and outlines the faculty’s plans for improvements in these areas.

Cramming from a book, making notes or learning summaries. In the past these were about the only ways to memorise your course material. But that has long since changed. Multimedia is the code word. But is it effective?

Coronavirus is generating a great deal of uncertainty throughout the world. Fortunately, there are some bright spots, such as the residents of Italian cities who are in quarantine trying to keep everyone's spirits up with their clapping and singing. Closer to home, Leiden historian Suze Zijlstra took…

Anke Klein and her team have devised a fun and useful app to help anxious children. In the app, children can upload a video of themselves showing, for example, something that went well for them and share their success with parents, granny or grandad. Developmental psychologist Klein talks about the…

Over a seven year period an international team of scientists has mapped more than a quarter of the northern sky using the Low Frequency Array (LOFAR), a pan-European radio telescope. From Leiden, Astronomer Timothy Shimwell and Huub Röttgering, among others, are involved. It reveals an astonishingly…

PhD defence

For the first time, we’re seeing what Euclid sees. The telescope’s initial observations have provided a wealth of new information about our universe. But according to cosmologist Alessandra Silvestri, this is just the beginning. The research helps us gain a deeper understanding of the past, present,…

Artificial intelligence can help doctors analyse images such as MRI scans. In future it may even be able to predict how a tumour will grow. And that is badly needed to relieve the pressure on healthcare workers.

Professor of Fungal Genetics and Biotechnology Arthur Ram explains how fungi can help us be more sustainable.

Persecution, conflicts and crises threaten academic facilities and researchers worldwide. This has major implications for science. Leiden University's Scholars for Scholars programme helps scientists in need through crowdfunding.

This week Leiden student Roos Kolkman will be campaigning throughout the country to win the votes of Dutch youth in order to become the next UN Youth Delegate for Sustainable Development.

Many primary school children suffer from anxiety and their numbers are increasing. Psychologists from the Knowledge Center Anxiety & Stress (KAS) are developing and researching preventive training.

'It gave our team a big boost to hear that our work was valuable,' says medical chemist Elmer Maurits about the moment they won the Venture Challenge. With their company Iprotics, they want to develop a drug that can better treat patients with autoimmune diseases and blood cancers. 25,000 euros of prize…

Like spoken languages, sign languages evolve organically and do not always have the same origin. This produces different ways of communication and annotation. Manolis Fragkiadakis wrote his PhD thesis on this.

AI can help scientists to collect data about the earth faster. This saves them a lot of time on trying to figure out how to analyze all the data they collect. Julia Wasala, PhD student at the Leiden Institute of Advanced Sciences(LIACS), tells us how AI can be used to save time.

How were Spanish commanders fighting in the Low Countries between 1567 and 1577 portrayed in Spanish and Dutch narrative sources during the Eighty Years War?

Receiving positive support and seeing yourself as being a quitter may help smokers quit, say Eline Meijer and colleagues. The health psychologists published their study in Social Science & Medicine.

Electrical inner ear prostheses like Cochlear Implants (CIs) help deaf and severely hearing-impaired persons to regain many of their communication abilities. The performance of CI in social environments is, however, not optimal. The new "Machine learning To Enhance teMPoral cOding foR cochleAr impLants“…

The Dutch PVV party has proposed a legislative amendment that would make helping illegal immigrants a criminal offence. Joanne van der Leun, Professor of Criminology, spoke to NRC newspaper about the criminalisation of illegality: ‘It’s absurd.’

During the bachelor’s programme Astronomy you will immerse yourself in questions about our universe. Questions such as: ‘what happens in a black hole?’ and ‘what is dark matter?’ In doing so you will learn to apply mathematics and physics to astronomical problems and you will work with computer simulations…

The Khoesan were the first people in Africa to undergo the full rigours of European colonisation. By the early nineteenth century, they had largely been brought under colonial rule, dispossessed of their land and stock, and forced to work as labourers for farmers of European descent.

This publication of the School of Advanced Study of the University of London is one of the outcomes of the Landscapes of Early Roman Colonization project and the Colonial Rural Networks project (NWO, Dr. T.D. Stek). The volume, edited by Tesse Stek and prof. Gert-Jan Burgers of the Free University Amsterdam,…

This is an Erasmus+ International Credit Mobility project of the Faculty of Humanities with the Anton de Kom University in Paramaribo.

Never has good policy been so important. From unemployment and a lack of affordable housing to regulating cryptocurrencies and protecting against cybersecurity threats, the challenges we face are complex and global. The text explains how policymaking works: from the emergence of policy ideas to deciding…

We explore the particle physics and quantum world at the time of the big bang.