The Faculty of Mathematics and Natural Sciences: Search
Now showing items 1-10 of 11
Modeling of the Near Infrared Emission From the Peculiar B[e]-Star MWC349
(2000)
The aim of this thesis is to investigate the first overtone band emission of CO from the peculiar B[e] star MWC 349. With the United Kingdom Infrared Telescope (UKIRT) in Hawaii, low resolution observations were made to ...
Studying Galaxy-Galaxy Lensing and Higher-Order Galaxy-Mass Correlations Using the Halo Model
(2009-06-22)
In recent years, the distribution of galaxies in the Universe could be measured up to large distances and over a significant part of the sky. The analysis of this large-scale structure contains a wealth of cosmological ...
The Effelsberg-Bonn HI Survey
(2009-02-25)
Since Summer 2008 a new L-band 7-Feed-Array is operated for astronomical science at the 100-m radio telescope at Effelsberg. This receiver will be used to perform an unbiased, fully sampled HI survey of the whole northern ...
High-energy processes in low-mass protostars – an X-ray to radio multi-wavelength perspective
(2007)
High-energy processes in protostars remain poorly understood. Only after the recently finished Chandra Orion Ultra-deep Project (COUP), statistically significant information on X-ray emission from Young Stellar Objects ...
Die Suche nach hochdispergierten Radio-Pulsaren in Richtung des Galaktischen Zentrums
(2005)
Obwohl bis zum heutigen Tage mehr als 1500 Radio-Pulsare in unserer Galaxie entdeckt wurden, konnte bislang nicht ein einziger Pulsar im direkten Umfeld des Galaktischen Zentrums gefunden werden. Dies ist um so mehr ...
Weak Gravitational Lensing and Galaxy Bias
(2005)
Galaxies were formed from primordial baryonic matter within the gravitational potential of the dark matter. Today a confusing wealth of different galaxy populations is known. Explaining the emergence of this zoo of galaxy ...
X-rays from Irregular Dwarf Galaxies: The Connection between Coronal Gas and High Energetic Stellar Events
(2005)
Radio observations of irregular dwarf galaxies (dIrr) in the 21 cm-line emission reveal cavities in their interstellar medium which are denoted as holes, bubbles or shells. The origin of these structures is still a matter ...
Pyrolyse von Metalloxiden und Silikaten unter Vakuum mit konzentrierter Solarstrahlung
(2005)
In der vorliegenden Arbeit wurde untersucht, ob eine solarthermische Hochtemperaturpyrolyse von Mondgestein oder anderen Gesteinen im Vakuum zur Gewinnung von Sauerstoff prinzipiell möglich ist und welche Anforderungen ...
Investigations of Intraday Variable Blazar Cores and the Connected Interstellar Medium
(2006)
The work presented here is an attempt to shed further light upon the phenomenon of short-term radio variations (Intraday Variability, IDV) often observed in compact blazar cores. Three different new observational approaches ...
Modellierung der dreidimensionalen Dichteverteilung des geokoronalen Neutralwasserstoffes auf Basis von TWINS Ly-Alpha-Intensitätsmessungen
(2006)
Die dreidimensionale Dichteverteilung des geokoronalen Neutralwasserstoffes der äußeren Exosphäre der Erde sowie deren zeitliche Dynamik sind nach wie vor Gegenstand der Hochatmosphärenforschung. Insbesondere die verschiedenen ...