382 search results for “very large telescope” in the Public website
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Exploring strange new worlds with high-dispersion spectroscopy
Until the 1990s, the only known planets were those in our Solar System. Three decades later, several thousand exoplanets have been discovered orbiting stars other than the Sun, and substantial efforts have been made to explore these strange new worlds through spectroscopic analyses of their atmosphe…
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Crucial Dutch contribution to European X-ray telescope
The Netherlands Organisation for Scientific Research NWO allocates nearly € 19.5 million to a Dutch cluster that contributes to the development of an X-ray camera and spectrograph for the new European space telescope Athena. Leiden Observatory is one of the members of the cluster.
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Huib van Langevelde new director Event Horizon Telescope
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…
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A 120 year-old Telescope Gets a Makeover
For the first time more than half century, one of oldest telescopes at Leiden Observatory is getting a major improvement.
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Free large scale online education: MOOCs
Everyone wherever they are in the world can follow free online academic courses offered by Leiden University.
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Neutrino telescope KM3NeT receives 12.7 Million Euro NWO grant
KM3NeT is selected as one of the ten top research facilities in NWO’s National Roadmap for Large-scale Research Infrastructure. Leiden physicist Dorothea Samtleben is the deputy program leader of Nikhef’s KM3NeT group.
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Steady-State Analysis of Large Scale Systems
Promotor: W.Th.F. den Hollander Co-Promotor: F.M. Spieksma
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A large-scale crop protection bioassay data set
ChEMBL is a large-scale drug discovery database containing bioactivity information primarily extracted from scientific literature.
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Searching for life in the Universe
Is there extra-terrestrial life out there? It now looks as though we can sketch out an answer to this enduring question. Leiden Observatory is helping to build new instruments to find the most promising exoplanets.
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Dynasty: A Very Short Introduction
For thousands of years bloodlines have been held as virtually unassailable credentials for leadership, with supreme political power perceived as a family affair across the globe and throughout history. At the heart of royal dynasties, kings were inflated to superhuman proportions, yet their status came…
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Don't Blink: Detecting transiting exoplanets with MASCARA
This thesis describes the Multi-site All-Sky CAmeRA (MASCARA), which consists of two small robotic telescope designed to detect exoplanets around the brightest stars in the sky.
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Giant planet at large distance from sun-like star puzzles astronomers
A team of astronomers led by Dutch scientists have directly imaged a giant planet orbiting at a large distance around a sun-like star. Why this planet is so massive, and how it got to be there, is still a mystery. The researchers will publish their findings in the journal Astronomy & Astrophysics.
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ESO instrument METIS passes important design milestone
The METIS instrument that’s being built for ESO's future Extremely Large Telescope (ELT) in Northern Chile under the leadership of the Dutch Research School for Astronomy (NOVA) has reached an important milestone: the preliminary design has been approved.
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First direct detection of a brown dwarf with a radio telescope
Astronomers at ASTRON and Leiden University have used the LOFAR radio telescope to discover a 'brown dwarf' – a faint object more massive than Jupiter, but significantly less massive than the Sun. The discovery of the object dubbed Elegast, opens up a new path that uses radio telescopes to discover…
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Causal Discovery from High-Dimensional Data in the Large-Sample Limit
Developing robust algorithms and theory for establishing cause-effect relationships from observational data that scale up to large data sets
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Can large carnivores like tigers survive in multiple use forests? A study in the buffer zone of Panna Tiger Reserve, India.
Which factors (human-dimension and carnivore related) shape human tolerance of large carnivore and large carnivore survival in multiple use forests?
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Cosmic particle acceleration by shocks and turbulence in merging galaxy clusters
In this thesis, I study the formation of large-scale structure and the physics of particle acceleration at large scales (~Mpc).
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Genomics applications of nanopore long-read sequencing for small to large sized genomes
In this thesis I highlight the applications of Oxford Nanopore Technologies (ONT) sequencing. This technique is a relatively new approach in the sequencing field, where nanopores are embedded in a membrane, DNA molecules are pulled through nanopores and an electrical current serving as the sequencing…
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and Privacy in the Information Society; Data Mining and Profiling in Large Databases
Latest technological developments in data mining and profiling.
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X-raying extragalactic gas: warm-hot gas in the EAGLE simulations
I have studied the hot, diffuse gas around and between galaxies. Specifically, I have used the EAGLE numerical simulations of galaxy formation to predict the properties of this gas, and I have used those properties to predict specific observables: soft X-ray absorption and emission lines.
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Aggravating matters: accounting for baryons in cosmological analyses
Three major cosmology-focused missions are planned for the next decade: the Euclid space telescope, the Vera C. Rubin Observatory in Chile, and the Nancy Grace Roman Space Telescope.
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Leiden planetary experts want to study seven ‘Earths’ in more detail
Astronomers have discovered seven Earth-like planets around a dwarf star in our galaxy. Three of these planets are located in the habitable zone of this star, and may contain liquid water. ‘The next step is to study the atmospheres for signs of life. In Leiden we are experts in that area,‘ says planetary…
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Faint Quasars at Very Low Frequencies
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?
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Nanofluidic tools for bioanalysis: the large advantages of the nano-scale
Promotor: Prof.dr. T. Hankemeier, Prof.dr. J.C.T. Eijkel (Twente University)
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The flux and flow of data: connecting large datasets with machine learning in a drug discovery envirionment
This thesis focuses on data found in the field of computational drug discovery. New insight can be obtained by applying machine learning in various ways and in a variety of domains. Two studies delved into the application of proteochemometrics (PCM), a machine learning technique that can be used to…
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Hydrodynamics and the quantum butterfly effect in Black Holes and large N quantum field theories
Why do black holes emit thermal radiation? And how does a closed quantum system thermalize?
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HomininSpace – a large scale simulation system for hominins in the past
HomininSpace is an agent based modelling and simulation system in which fluctuating carrying capacity is the key attractor for hominin dispersal. A parameterized and spatially explicit reconstructed palaeo-environment models available energy in the form of secondary biomass using reconstructed climate…
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Constraints on large-scale implementation of BioSolarCells, Early stage assessment of environmental value propositions
What performance criteria does a new technology have to fulfill in order to be added to the list of future energy options and what constraints exist in terms of broad market penetration?
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Let the sun shine in Leiden!
The Leiden Observatory is starting a crowdfunding campaign to raise enough money to construct a new telescope.
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Mysterious ripples racing through planet-forming disk
An international team of astronomers, including Leiden’s Christian Ginski, has discovered previously unobserved structures in a debris disk around a nearby star. Article published in Nature on 8 October.
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Yumeng Wang
Science
y.wang@liacs.leidenuniv.nl | +31 71 527 2727
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Huub Rottgering
Science
rottgering@strw.leidenuniv.nl | +31 71 527 5851
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Maarten Schrama
Science
m.j.j.schrama@cml.leidenuniv.nl | +31 71 527 7483
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Astronomers see whirlwind around possible exoplanet-in-the-making
An international team of astronomers led by researchers from the Leiden University has discovered a whirlwind of dust and pebbles in orbit around a young star. It is possible that a planet is forming in the pebbles. The team of scientists made the discovery during the time that designers and developers…
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Astronomers destroy former record for most distant galaxy
An international team of astronomers that includes researchers from Leiden has discovered the most distant galaxy yet. The galaxy, called EGS8p7, is 13.23 billion light years away from Earth and already existed when the universe was only 550 million years old.
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Gabriella Di Gennaro
Science
digennaro@strw.leidenuniv.nl | +31 71 527 2727
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Wireless Random-Access Networks and Spectra of Random Graph
This thesis is divided into two parts. In Part I we study metastability properties of queue-based random-access protocols for wireless networks. The network is modeledas a bipartite graph whose edges represent interference constraints. In Part II we study spectra of inhomogeneous Erdős-Rényi random…
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WLS
The Werkgroep Leidse Sterrewacht (WLS) is an amateur association that, in addition to organising public activities, is also heavily involved in maintaining the historical telescopes in the Old Observatory.
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Orchestration of Distributed LOFAR Workflows
The LOFAR radio telescope produces petabytes of data every year. Radio Astronomers use complex multi-step pipelines to process this data and produce scientific images.
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Ewine van Dishoeck receives honorary doctorate from the University of Geneva
Astrophysicist Ewine van Dishoeck has been awarded an honorary doctorate from the University of Geneva. She received the award on 11 October during the Dies academicus of the Swiss university, which, like Leiden University, is part of the European research university federation LERU.
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Old Observatory Leiden
The Old Observatory of Leiden is the oldest surviving university observatory in the world. While students of Leiden University receive lectures in the main part of the building, the visitor center in the basement and the telescopes on the building serve the general public. Here you will find information…
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First measurement of isotopes in atmosphere of exoplanet
An international team of astronomers have become the first in the world to detect isotopes in the atmosphere of an exoplanet. It concerns different forms of carbon in the gaseous giant planet TYC 8998-760-1 b. The research will be published in the scientific journal Nature on Thursday.
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To the edge of space and time
Large telescopes can look so deep into the Universe that they can also look back billions of years in time. From 2018, the successor of the Hubble Space Telescope, the James Webb Space Telescope, will be able to see the period just after the Big Bang, when the first stars and galaxies formed. Astronomers…
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The densest matter in nature
What is neutron star matter?
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Exploring the Universe
Astronomers want to understand the Universe, from the Big Bang to the present day, and what the future will hold. In Leiden they focus on two key questions: ‘How did stars and planets originate’ and ‘How were galaxies and black holes formed in the young Universe?’ A new generation of telescopes – just…
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ALMA Reveals Inner Web of Stellar Nursery
Recent study led at the Leiden Observatory has observed Orion with unprecedented detail. New data from the Atacama Large Millimeter/submillimeter Array (ALMA) and other telescopes have been used to create this stunning image showing a web of filaments in the Orion Nebula. These features appear red-hot…
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Astronomer Joe Callingham testifies against killer stars in new show on Discovery Channel
On Friday evening 17 September, Leiden astronomer Joe Callingham can be seen in a new series on Discovery channel. Killers of the Cosmos is about different deadly dangers lurking in the depths of space. Asteroids, cosmic debris, electromagnetic weapons… The show takes a film-noir approach to these threats,…
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Visitor Center
Visit our exhibition JWST Universe and be immersed in the phenomenal images from this groundbreaking telescope.
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School programmes
The Old Obervatory Leiden is one of the partners of the local learning ecosystem ‘Verwonder om de Hoek’, an educational platform from Leiden that lets school children and families wonder about the world of Nature, Science, Technology and Sustainability. On this page you will find the educational programmes…
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Prying eyes on radio skies: pushing the high-resolution low-frequency frontier with LOFAR
In this thesis we push the boundaries of high-resolution imaging at radio frequencies between 100 and 200 MHz. Using the International LOFAR Telescope that spans across Europe we achieve sub-arcsecond angular resolution.