1,725 zoekresultaten voor “quasar absorption lines” in de Publieke website
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Winds in the AGN environment: new perspectives from high-resolution X-ray spectroscopy
Promotor: J.S. Kaastra Co-promotor: E. Constantini
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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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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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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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Scattering and absorption in 2D optics
Scattering of light in the presence of nano-structured materials, i.e. with features in the order of the wavelength of the light or smaller, reveals details of how light interacts with matter at the nanoscale.
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External Knowledge Absorption in Chinese SMEs
Today, knowledge is the most crucial element to stimulate organizational competitiveness and economic development.
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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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Line van Wersch
Faculteit Archeologie
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Research lines
Physics and Engineering Approaches to Biomedicine and Pharmacology
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Electronic spectroscopy of molecules of astrophysical interest
This thesis revolves around the electronic spectroscopy of molecules in the laboratory and the search for the carriers of the diffuse interstellar bands (DIBs).
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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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Research lines
Current research at the Skin Barrier and Vaccination group.
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New detection method for quasars in the early Universe
Astronomers from Leiden Observatory have developed a new method to find distant quasars and better distinguish them from other objects that look like them, using machine learning techniques. The research result has been accepted for publication in the journal Astronomy & Astrophysics. It is the last…
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Abstract delta modeling: software product lines and beyond
Promotor: Prof.dr. F.S. de Boer, Co-promotor: D. Clarke
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label-free detection of GPCR-mediated drug responses in personal cell lines
Source: Biosens Bioelectron, Volume 74, pp. 233-42 (2015)
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Triple bottom line approach for risk-benefit analysis of genetically modified crops
Description of Triple bottom line approach for risk-benefit analysis of genetically modified crops.
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Inaugural lecture: X-ray diagnostics in space: Lines in the universe
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The European Court of Human Rights reading between the lines
Lezing
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Pesticides Atlas overhauled in line with European Framework Directive on Water
The Dutch atlas with pesticides concentrations in surface waters have been overhauled. This new, free accessible, website is in line with the European Framework Directive on Water (In Dutch: KRW).
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Supermassive black holes and powerful telescopes: new Professor Joe Hennawi
Meet the newest Full Professor at the Leiden Observatory: Joe Hennawi. All the way from Santa Barbara, California, Hennawi will strengthen the astronomy institute. In Leiden, he will use his recent ERC Advanced Grant to study how supermassive black holes come into existence.
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The Infrared Spectrum of Massive Protostars
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.
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Lines in the sand: behaviour of self-organised vegetation patterns in dryland ecosystems
Vast, often populated, areas in dryland ecosystems face the dangers of desertification.
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active cyber defense and (international) cyber security—pushing the line?
This article on private active cyber defense by Dennis Broeders is part of a special issue of the Journal of Cybersecurity, based on a selection of contributions taken from the 2019 Conference on Cyber Norms organized by The Hague Program for Cyber Norms.
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elections: A fragmented picture as Rutte and Wilders draw their battle lines’
The parliamentary elections in the Netherlands, scheduled for March 2017, are likely to result in a fragmented parliament and a complicated coalition formation process, according to Dutch political scientist Hans Vollaard (Leiden University).
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Ultra-thin material absorbs all the light
It appears to be a paradox: ultra-thin material that absorbs all the incident light. Nonetheless, it does exist. Two Leiden researchers report on their research in ‘Applied Physics Letters’. The article is among the Top 20 of the most downloaded articles of this reputable journal in May.
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Coherent dynamics in solar energy transduction
Promotor: Huub de Groot, Co-promotor: Francesco Buda
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Newton-telescope finds missing intergalactic material
Astronomers from, among others, SRON and Leiden Observatory have discovered long-sought intergalactic gas with ESA’s space telescope XMM-Newton. This gas is one of the pieces of the puzzle to map the total amount of ‘normal’ matter in the universe. The research will be published in Nature on 21 June…
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cyber norms and interpretations of international law: inching towards lines in the sand?
This article traces the evolution of interpretations of international law and international cyber norms on responsible state behaviour in cyberspace by reassessing five major – and allegedly state-led – cyber operations: Stuxnet 2010; Belgacom 2013-2014, the Ukrainian power grid 2015, the US presidential…
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Casting light on the ƞ Carinae puzzle
Promotor: Prof.dr. V. Icke, Co-Promotor: T.I. Madura
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Faint Quasars at Very Low Frequencies
Promotie
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Cytochrome P450 3A-mediated first-pass and systemic drug metabolism in children
From descriptive to physiological models that can predict oral absorption and elimination of CYP3A substrates across the pediatric age range.
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Hot Nanoparticles
Gold nanoparticles show surprisingly strong interactions with light in the visible range, which can be divided into scattering, absorption, and photoluminescence.
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CD-release ELISION ensemble - world-line
world-line presents the forces of ELISION on Huddersfield Contemporary Records for the fourth time, once again pushing the boundaries of instruments in search of visceral, expressive musical experiences. The three works present very different aesthetic approaches, crafting dynamic and innovative sound…
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Physicists image individual molecules by watching them absorb light
Molecules are extremely hard to see in visible light, especially without using fluorescence. Leiden physicists have now made their optical technique sensitive enough to image the molecules of their interest in all sizes. Publication in Nanoletters.
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Gemeente Leiden: Water and Climate Change. Climate Proofing the Neighbourhood
Climate Proofing the Neighbourhood: Evaluating Citizen’s Participation in the City of Leiden
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‘Art is the front line of science’
Research on art is often compared to other forms of scientific research. Professor Henk Borgdorff believes that's unfortunate. 'Research on art is absolutely one of the front lines of science.' Inaugural lecture 10 February.
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Coats, glasses and gloves, your last line of defense
Marie Curie once said: I have no dress except the one I wear every day. If you are going to be kind enough to give me one, please let it be practical and dark so that I can put it on afterwards to go to the laboratory.
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Video production of Richard Barrett's composition 'world-line'
The Elision Ensemble made a video production of Richard Barrett's half-hour composition 'world-line'.
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Scattering and absorption in 2D optics
Promotie
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External Knowledge Absorption in Chinese SMEs
Promotie
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Oxygen line opens new perspective on the far universe
A team of astronomers of Leiden University and the University of Texas (Austin, United States) has discovered a new way to map distant galaxies. They did so by observing the fingerprint of oxygen in a distant galaxy, something that is usually not possible from Earth. The researchers will publish their…
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Imaging the water snow line within a protoplanetary disc
Research using the ALMA telescope by scientists including Leiden's John Tobin and Steven Bos has produced the first images of the water snow line within a protoplanetary disc. Publication in Nature on 14 July.
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The Capacity to Innovate: Cluster Policy and Management in the Biotechnology Sector
In this book, Sarah Giest, Assistant Professor at the Institute of Public Administration, provides insight into the collaborative and absorptive capacities needed to provide public support to local innovation through cluster organizations.
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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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Towards in-cell structural study of light-harvesting complexes : an investigation with MAS-NMR
Light-Harvesting Complex II (LHCII) is responsible for light absorption and excitation energy transfer in plants and photosynthetic algae, while in high light it undergoes conformational changes by which it quenches excitations to prevent photodamage.
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Fault Lines Design/Research at KABK/Leiden University
Organized by the Lectorate Design Friday, December 14, 2018 KABK Auditorium 10:00-17:00
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The physics of nanowire superconducting single-photon detectors
Promotores: Prof.dr. D. Bouwmeester, Prof.dr. A. Fiore (TU Eindhoven)
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Light particles lined up one after the other
In Leiden, light particles march into Wolfgang Löffler’s experiments one by one. His research focuses on acquiring the fundamental knowledge needed to develop quantum computers and networks.
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Gold nanorod photoluminescence: applications to imaging and temperature sensing
Promotor: M.A.G.J. Orrit
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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.