148 zoekresultaten voor “intergalactic medium” in de Publieke website
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Metals in the diffuse gas around high-redshift galaxies
Promotores: Prof.dr. J. Schaye & Prof.dr. C. Steidel (California Institute of Technology)
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Galaxy formation traced by heavy element pollution
Galaxies form and evolve through close interaction with their surroundings. As a result, the heavy elements ('metals') that are synthesized in stars, are found both inside and outside galaxies.
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Probing the properties of dark matter particles with astrophysical observations
It is an established fact that the Standard Model has to be extended to explain the so-called Beyond the Standard Model (BSM) phenomena: dark matter, matter-antimatter asymmetry of the Universe and neutrino flavour oscillations.
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of Orion: the interplay of gas, dust, and stars in the interstellar medium
Promotores: Prof.dr. A.G.G.M. Tielens, Prof.dr. L. Kaper (UvA)
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Studies of dust and gas in the interstellar medium of the Milky Way
Promotor: Prof.dr. A.G.G.M. Tielens
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clusters: observing the chemical enrichment in the hot intra-cluster medium
Promotor: Jelle S. Kaastra Co-promotor: Jelle de Plaa
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Uit Leidse dozen. Brochures als medium in de discussies tussen protestantse modernen en katholieken, 1840-1870
Ineke Smit verdedigde haar proefschrift op 17 september 2019
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A fresh view on carbon radio recombination lines powered by LOFAR
The Low Frequency Array enables studies of low-frequency carbon radio recombination lines with unprecedented sensitivity, spectral and spatial resolution.
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Tielens wordt hoogleraar ‘Physics and Chemistry of the Interstellar Medium‘
Prof. A.G.G.M. (Xander) Tielens wordt bij 1 januari bij de Faculteit der Wiskunde en Natuurwetenschappen benoemd tot hoogleraar ‘Physics and Chemistry of the Interstellar Medium’. Tielens werkt momenteel als senior onderzoeker bij Ames in Moffett Field, Californië. Ames is een onderdeel van NASA. Daarnaast…
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Investment Grant NWO Medium for Simon Portegies Zwart
A revolutionary supercomputer with energy-efficient parts that are available in the shops. Professor of Computational Astrophysics Simon Portegies Zwart has been awarded an NWO Medium Grant to build this processing giant, which will have the power of a supercomputer but requires only one percent of…
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Breaking & Entering: PAH photodissociation and top-down chemistry
Laboratory, observation and modeling work on the dissociation of polycyclic aromatic hydrocarbons in interstellar environments and the formation of new molecular species through the fragmentation process.
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Shining Light on PAHs in Space
Polycyclic aromatic hydrocarbons (PAHs) are the most abundant class of organic compounds in space. The PAH field evolves from the constant interaction between experimentalists, theorists, modellers and observers. While laboratory research and quantum chemical calculations together set up the molecular…
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Resolving gas-phase metallicity in galaxies
Galaxies are environments where gas coalesces, cools, and is converted into stars. However, it remains unclear the exact mechanisms through which galaxies acquire, redistribute and lose their gas.
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Exploring the magnetic, turbulent Milky Way through radio waves
Promotor: Prof.dr. H. J. A. Röttgering, Co-Promotor: M. Haverkorn
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Radio galaxies at low frequencies: high spatial and spectral resolution studies with LOFAR
Promotor: H.J.A. Röttgering, Co-promotor: G.K. Miley
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Revealing the nature of new low-frequency radio source populations
It has now been well established that shocks and turbulent motions in the intra-cluster medium (ICM) generated through cluster mergers can produce large-scale synchrotron emission.
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X-ray spectroscopy of interstellar dust: from the laboratory to the Galaxy
In this thesis, we present new laboratory data of interstellar dust analogues.
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Orion's Dragon and Other Stories
Stellar feedback is a crucial ingredient in the evolution of galaxies.
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Modeling interstellar bubbles: near and far
Promotor: Prof. dr. A.G.G.M. Tielens
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Cold gas in distant galaxies
The formation and evolution of galaxies is fundamentally driven by the formation of new stars out of cold gas.
- The Desire of the Medium
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Diagnostics for mechanical heating in star-forming galaxies
Promotor: F.P. Israel, Co-Promoter: R. Meijerink
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The interplay between lipids and the immune system in atherosclerosis
Cardiovascular diseases are among the most frequent causes of death in the world. The main underlying pathology of cardiovascular diseases is the development of atherosclerosis in the medium and large-sized arteries.
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The early stress response of jasmonic acid in cell suspension cultures of Catharanthus roseus
In order to gain a better insight into the basis of the rapid jasmonic acid (JA)-mediated stress response, an integrated approach using a targeted high-resolution mass spectrometry-based (HRMS) platform, was conducted to monitor the metabolism of JA using the model system of cell suspension cultures…
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Identifying the origins of galaxy formation
This thesis investigates how galaxies form and what diversifies the evolutionary histories of galaxies.
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Staren naar het sterrenstof
Stofdeeltjes in de ruimte vormen de basis voor nieuwe sterren en planeten. Maar waar bestaan die stofdeeltjes uit, en hoe gedragen ze zich? Sascha Zeegers onderzocht het. Promotie op 1 november.
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Development of an in vitro vascular network using zebrafish embryonic cells
One of the major limitations in culturing complex tissues or organs is the lack of vascularization in the cultured tissue. Development of a functional capillary bed could overcome this problem.
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Dancing with the Stars
This thesis develops a method for direction dependent calibration of the ionosphere in radio interferometric data.
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Popular Music in Southeast Asia
From the 1920s on, popular music in Southeast Asia was a mass-audience phenomenon that drew new connections between indigenous musical styles and contemporary genres from elsewhere to create new, hybrid forms. This book presents a cultural history of modern Southeast Asia from the vantage point of popular…
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Infrared spectroscopy of astrophysically relevant hydrocarbons
This thesis is about the study of hydrocarbons via infrared spectroscopy.
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Blowup in the complex Ginzburg-Landau equation
Promotor: Prof.dr. A. Doelman, Co-promotor: V. Rottschäfer
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Photothermal studies of single molecules and gold nanoparticles: vapor nanobubbles and conjugated polymers
Promotor: M.A.G.J. Orrit
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Het Criminologisch Kwartet
Test je kennis over criminaliteit en de rechtsstaat met dit leuke kaartspel.
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Unraveling the auxin mechanism in 2,4-D induced somatic embryogenesis in Arabidopsis thaliana
Promotor: P. J. J. Hooykaas, Co-promotor: R. Offringa
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Advanced in vitro models for studying drug induced toxicity
Promotor: B.van de Water, Co-promotor: L.S.Price
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Some case studies of random walks in dynamic random environments
Promotor: Promotor: W.Th.F. den Hollander, Co-promotor: V. Sidoravicius.
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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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Shining Light on Interstellar Matter
Promotor: H.V.J. Linnartz
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Ecological functions and environmental fate of exopolymers of Acidobacteria
Acidobacteria is a widely distributed phylum but their functional roles in ecosystem processes are still largely elusive.
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Modulation of the immune system for treatment of atherosclerosis
Cardiovascular diseases are the primary cause of death in the world with atherosclerosis as primary underlying cause.
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Ecology of the Ethiopian wolf (Canis simensis Rüppell 1835) in a changing landscape: Human carnivore interactions in Afroalpine ecosystems of
Ethiopian wolves are endangered diurnal Afroalpine rodent hunters. I investigated the interaction between wolves, rodents and human land use in Borena Sayint National Park (BSNP), Abune Yosef and Aboi Gara in Ethiopia.
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Vrijheid van meningsuiting op ‘social media’
Moet je alles kunnen zeggen op Twitter en Facebook? Is Instagram moreel verplicht foto’s te verwijderen van aanslagen? Moeten we toestaan dat terroristische groepering nieuwe leden werven op het internet?
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Jonge sterren in de Orionnevel doen aan geboortebeperking
Astronomen van de Universiteit Leiden hebben in data van het SOFIA observatorium ontdekt dat de sterrenwind van een pasgeboren ster in de Orionnevel verhindert dat er in de directe omgeving meer sterren worden gevormd. Dat maakte coauteur Xander Tielens bekend tijdens een persconferentie op de 233ste…
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This Week's Discoveries | 23 May 2017
Lezing
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Uit Leidse dozen. Brochures als medium in de discussies tussen protestantse modernen en katholieken, 1840-1870
Promotie
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Media & interactie
Media & interactie is waar kunstmatige intelligentie en machine learning samenkomen met filosofie, cognitieve wetenschap en de creatieve kunsten. Voorbeelden van onderzoeksvragen in dit domein zijn: ‘Kan een algoritme naar menselijke maatstaven creatief zijn?', 'Kunnen creatieve processen, zoals het…
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Waarom Universiteit Leiden
Bij Film- en literatuurwetenschap ga je op zoek naar het onderscheidende van elk medium. Je bestudeert literatuur en films in historisch perspectief, in relatie tot andere culturen en media.
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Het Facebook-schandaal: duiding en tips
Facebook ligt onder vuur vanwege het schandaal met Cambridge Analytica: gegevens van tientallen miljoenen gebruikers zijn gelekt. Wordt dit de ondergang van Facebook? 'De storm waait wel over', denkt beveiligingsexpert Erik van der Kouwe. Hij geeft tips hoe Facebook je niet overal kan volgen.
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Rechter stelt harde grens aan wat online mag
De reikwijdte van het strafrecht moet wat betreft racisme en bedreigingen op het internet niet worden overschat', zegt Peter Rodrigues, hoogleraar immigratierecht en deskundige op het gebied van racisme en discriminatie aan de Universiteit Leiden.
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Access & Support Platform
Het Access & Support Platform is een netwerk van ervaringsdeskundige medewerkers en studenten aan de Universiteit Leiden op het gebied van beperking en ondersteuningsbehoefte. ASP nodigt iedereen uit om met ons te werken aan een inclusieve en toegankelijke Universiteit Leiden en gelijkwaardige behandeling…