223 search results for “black hours” in the Student website
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Caitlin BlackScience
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Lindsay BlackFaculty of Humanities
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Karwan Fatah-BlackFaculty of Humanities
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Supermassive Black Holes
Lecture, Studium Generale
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Finding the origin of giant black holes
‘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…
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First photo of black hole at the heart of our Galaxy
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.
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Black hole one year later: proof of a persistent shadow
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.
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Dutch astronomers observe giant jets emanating from black hole
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…
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Scientists discover the largest stellar black hole in the Milky Way
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…
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‘American’ Black Power movement was also active in the Kingdom of the Netherlands
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.
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for Leiden astronomy student who simulated chaotic interactions of black holes
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…
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Black Hole Images as Artifacts of Human Choice | Rijksmuseum Boerhaave Exhibition
Delve into the depths of black hole imaging as anthropologist Rodrigo Ochigame unveils the human decisions shaping its portrayal. Explore four alternative color choices at the 'Towards the Black Hole' exhibit, now showing at Rijksmuseum Boerhaave, Leiden.
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Karwan Fatah-Black launches book series on slavery and emancipation
How do we account for historical power dynamics when writing new histories of slavery and emancipation? What critical methods can we employ when studying preserved archives and collections? A new book series aims to address these questions. The initiators Karwan Fatah-Black and Ilse Josepha Lazaroms…
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First on-campus event for prospective students: ‘Dr. Black’s seminar was so interactive!’
Touring the campus, meeting current students and taking part in an interactive seminar in the Lipsius building. After 1,5 years of online events due to the corona pandemic, a live Student for a Day took place again on Friday 24 September.
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Black holes are sometimes gigantic volcanoes. Martijn Oei earned his PhD on the subject, with honours
Not everything that comes close to a black hole is swallowed by it. Black holes can also hurl material away, and that chance turns out to be considerably bigger than previously thought. Martijn Oei's accidental discovery and his subsequent research on it earned him a cum laude promotion on 12 Decemb…
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Motion of stars near Milky Way's central black hole is only predictable for few hundred years
The orbits of 27 stars orbiting closely around the black hole at the center of our Milky Way are very chaotic. As a result, researchers cannot predict with confidence where they will be in about 462 years. ‘That is astonishingly short,’ says astronomer Simon Portegies Zwart who collaborated on the r…
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Greedy Supermassive Black Holes
Lecture, Oort lecture
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Different Opening Hours in May
Organisation
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Willem van der Does sheds new light on the at times pitch-black history of psychiatry
Piercing through the skull with an ice pick, administering electric shocks without an anaesthetic, or applying leeches to the uterus: these may seem like medieval methods of torture, but they are in fact therapies used in medicine. Willem van der Does writes about all of them in his new book. ‘Physicians…
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Adjusted opening hours during summer 2023
Facility
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Adjusted opening hours during summer 2024
Facility
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Summer opening hours Leiden University College
Facility
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New opening hours Student Administration Desk Archaeology
Education
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Irregular Opening Hours during the Holidays
Facility, Organisation
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Extended opening hours Lipsius bike parking
Facility
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Adjusted opening hours WSD complex March
Facility
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Supermassive Black Holes and Where to Find Them
Lecture, Oort lecture
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Summer schedule opening hours WSD complex
Facility
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Astronomers Discover Ancient Solitary Quasars with Mysterious Origins
An international team of astronomers, including Leiden PhD student Elia Pizzati, has observed several ancient quasars that, surprisingly, appear to be floating alone in the early universe (less than a billion years after the Big Bang). Until now, astronomers, based on models, assumed that quasars are…
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Different opening hours university buildings 2-4 October
Organisation
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The Coordinators of Studies consultation hour is back!
Education
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Changes to opening hours and restaurants Sylvius and Snellius
Facility
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Changes to opening hours and restaurants Sylvius and Snellius
Facility, Organisation
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Hour of Remembrance on 4 May: ‘We commemorate war victims and draw links to the present’
During the ‘Hour of Remembrance’ on 4 May, the University community remembers its students and staff who were killed in the Second World War. It also looks at freedom and oppression today. Three questions for Sara Polak, chair of the Hour of Remembrance committee.
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New opening hours Pieter de la Court Building
Facility, Organisation
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Moroccan Register of “Slaves” in the Early 18th Century: Enslavement, Blackness and Racial Binary
Lecture
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Zooming in on Black Holes with a telescope the size of planet Earth
Lecture, Kaiser Spring Lecture
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Research by Leiden archaeologists in The Jordan Times
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.
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From Baghdād to Baghpūr: Global Blackness in Medieval Arabo-Asia
Lecture, Research Seminar Europe 1000-1800
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No running water in Van Steenis on June 8th from 7.00 to 9.00 hours
Facility
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Adjusted closing hours WSD complex and parking garage Maliebaan during the holidays
Facility
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Update: changes to opening hours Sylvius and Snellius and restaurants are open
Facility
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Registration for Archaeology BA2 Seminar Series 3 opens at 13.00 hours
Education
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Adjusted opening hours KOG, Legal Café and Restaurant because of the holidays
Facility
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Van Steenis building closes at 17:00 hours on Thursday November 23
Organisation
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Observatory (Sterrewacht) reopen on 18 May according to regular opening hours
Security
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How the speed demons of the universe tell us something about the Milky Way
They hurtle along at over a thousand kilometres per second: the fastest stars in the Milky Way. PhD candidate Fraser Evans conducted research into these elusive hypervelocity stars and discovered that they have a lot to teach us, about black holes and supernovae, for example.
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How to wear your graduation outfit
Each year students ask questions about how to actually wear your cap and gown. To make sure everyone is wearing it in the same, correct way, here is a short guide. There is even something which you should know about the tassel too!
- Events
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Vacancy: Student assistant AI and the Humanities (4 hours per week)
Education, Research