Why do black holes emit thermal radiation? And how does a closed quantum system thermalize?

The physical origin of the dozens of stellar-mass binaries, the mergers of which have been detected by the LIGO-Virgo-KAGRA collaboration via gravitational waves, is still unknown.

Promotor: Prof.dr. E.F. van Dishoeck, Co-Promotor: M.R. Hogerheijde

In this dissertation, matching, entropy, holes and expansions come together. The first chapter is an introduction to ergodic theory and dynamical systems.

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

During the summer, we organize a summer school for researchers who want to learn about communicating science to diverse audiences. The summer school is aimed at researchers in any career stage who are new to science communication. The Summer School is open for all disciplines in science, including social…

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…

Leiden University offers a unique range of summer courses where you can broaden or deepen your knowledge or share your expertise with fellow students. The choice of academic courses is very diverse, ranging from Law, Big Data, Languages and Linguistics to Maths and Natural Sciences, Biology, Biomedical…

LMW biedt verschillende typen kortere programma's aan, zoals workshops en zomerscholen.

We have conducted a full spectral line survey of the 3-13 micron region of two massive protostars, AFGL 2591 and AFGL 2136, for the first time at high spectral resolution.

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…

Promotor: M. Franx, Co-Promotor: I.F. Labbé

In een voortdurend veranderende omgeving en een steeds meer gefragmenteerd politiek-bestuurlijk krachtenveld sta jij samen met je team voor complexe opgaven. Hoe geef jij, vanuit je ambtelijke verantwoordelijkheid als leidinggevende binnen een gemeente, betekenis en sturing in deze tijd van onzekerheid,…

Galaxies in the local Universe fall into two main categories of spirals and ellipticals. In this Thesis, we explore the structural evolution of galaxies into this bimodal distribution.

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

Promotores: Prof.dr. M. Franx, Prof.dr. M. Kriek (Univ. of California at Berkeley)

Cursus, Summer School

The Sun and all the stars in the night sky reside in the Milky Way galaxy. In the at-rest reference frame of the Galaxy, typical stars travel with velocities of about 100-200 kilometres per second.

Twee podcastafleveringen van Africast over de Transatlantische Slavenhandel met Karwan Fatah-Black.

The thesis deals with the study of giant radio galaxies (GRGs), which are radio galaxies of megaparsec sizes.

Promotor: Prof.dr. S.F. Portegies Zwart

An Active Galactic Nucleus (AGN) is a highly luminous region at the center of a galaxy, powered by the accretion into a supermassive black hole and emitting energy from radio waves to gamma rays, often outshining the host galaxy.

In this thesis, we use low-frequency and high-frequency radio observations to address the following questions regarding quasars: is the radio loud/quiet quasar dichotomy real?

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.

Optimization tasks in practice have multifaceted challenges as they are often black box, subject to multiple equality and inequality constraints and expensive to evaluate.

Het superzware zwarte gat in het centrum van het Circinusstelsel slokt gas op via twee spiraalarmen. Dat ontdekte promovendus Wout Goesaert. Maar slechts een klein deel van het gas verdwijnt uiteindelijk in het zwarte gat, de rest wordt uitgespuugd.

Studenten van over de hele wereld deden mee met de Bio-Pharmaceutical Science Summer School 2017, van Moldavië en Italië tot aan Indonesië en Griekenland. De studenten kregen een uitgebreid inzicht in het onderwijs en onderzoek aan het LACDR. ‘Ik ben erg blij hier te zijn’, zegt deelnemer Marco Romf…

Lezing, Studium Generale

This thesis presents pioneering work on the panchromatic emission of some of the most luminous galaxies in the early Universe: star forming galaxies and active galactic nuclei.

Continuous optimization is never easy: the exact solution is always a luxury demand and the theory of it is not always analytical and elegant.

This thesis is a (biased) journey through very different topics in astrophysics: quasars and new populations of active galactic nuclei, gravitational waves from merging black holes, and protoplanetary discs around young stars.

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…

Op 28 juni bezocht een groep van 35 studenten (waarvan 13 uit Leiden) de Faculteit der Rechtsgeleerdheid in het kader van de Space Summer School, een vijfdaagse cursus georganiseerd door het LDE Centre

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.…

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…

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

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

Deze zomer organiseert de faculteit vier Summer Schools voor internationale bachelor studenten. De Summer Schools Bio-Pharmaceutical Sciences, Energy & Sustainability, Physics* and Astrophysica bieden elk interactieve programma’s met workshops en lezingen door locale en internationale sprekers, onderzoek…

In the summer school 'Medieval Religion' students will be challenged by specialists in the field of medieval religion to position and develop their own research in relevant scholarly and cultural contexts. The instructors will give masterclasses from their own specialties. Deadline for registrations:…

The Gennadius Library of the American School of Classical Studies at Athens announces the summer session focused on the study of Medieval Greek, from June 26 to July 27, 2023. The Library invites applications for a month-long Summer Session for Medieval Greek at the Intermediate to Advanced Level. The…

Studeren in het buitenland en op uitwisseling gaan is een geweldige manier om je horizon te verbreden en nieuwe plaatsen, culturen en studierichtingen te verkennen. Naast een uitwisseling van een volledig semester is er nog veel meer mogelijk: een Summer School of een stage. Bart Geldermans, student…

Van 16 tot en met 20 juni 2025 organiseerde de Faculteit Governance and Global Affairs van de Universiteit Leiden in Den Haag de jaarlijkse Summer School The European Union, the United Nations and Global Governance. Dit intensieve programma bracht recent afgestudeerden, promovendi en jonge professionals…

Zin om eens een ander vakgebied te verkennen? Of juist een onderwerp uit je studie verder uit te diepen? Ook deze zomer biedt de Universiteit Leiden weer een brede selectie Summer Schools aan.

Bachelor-, masterstudenten en promovendi kwamen 10 t/m 13 juli bijeen op de Campus Den Haag voor de EUniWell Summer School ‘COVID-19: Impact on European health & well-being’. De deelnemers volgden lezingen en workshops over de impact van de pandemie op de volksgezondheid. Ook discussieerden zij over…

The origin and evolution of galaxies are closely linked to many different physical phenomena.

The University of Göttingen is pleased to announce its annual international digital palaeography summer school. The summer school is intended as an intensive training programme for graduate students, in both traditional Latin palaeography and codicology, and in the latest digital technologies applicable…

The University of Bologna organizes a Summer School in Classical Languages, offering intensive courses in Latin and/or Greek (20 June – 23 July 2022). The deadline for applications is: 10 June 2022.