E-Dissertationen: Auflistung E-Dissertationen nach Klassifikation (DDC) "ddc:520"
Anzeige der Dokumente 1-20 von 236
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A 3-mm Imaging Line Survey of the Central Molecular Zones of M 82 and IC 342
Chidiac, Céline (2020-07-07)The central molecular zones of two nearby galaxies M 82 and IC 342 are among the most prominent extragalactic molecular sources in the northern hemisphere. While M 82 is a relatively small late type starburst galaxy, IC ... -
A LAsMA Survey of the Milky Way: Effects of Feedback on Molecular Clouds
Mazumdar, Parichay (2022-09-02)The advent of radio and (sub) millimetre astronomy has opened the world of molecular clouds (MCs) to astronomers' wonder. At the turn of the 21st century, MC surveys have helped us better understand them. How MCs form, ... -
The APEX southern sky survey of high mass star forming regions
Dedes, Carolin (2009-03-30)During my dissertation work, I studied the early stages of massive star formation in the southern hemisphere, using sub-mm line and continuum data. A sample of 47 sources, chosen according to IRAS color selection criteria, ... -
The APEX submillimeter imaging survey of distant galaxies in the COSMOS field
Navarrete Avendaño, Felipe Pedro (2015-11-16)Submillimeter galaxies (SMGs) are far-infrared luminous, vigorously star forming galaxies in the early universe. They are major contributors to the extragalactic far-infrared background emission, and they trace the most ... -
Application of photometric redshifts on the correlation properties of galaxies and matter
Hildebrandt, Hendrik Jürgen (2007)In the past years cosmology, the science of the universe as a whole, has seen tremendous progress. The Lambda-Cold-Dark-Matter scenario is widely accepted as the standard model of cosmology describing the evolution of the ... -
Asymmetries of Radio Galaxies
Sohn, Bong Won (2003)In this work, we have studied the asymmetries of radio galaxies which are known to be related to the jet-asymmetry. They are the depolarization asymmetry and the spectral index asymmetry.
The first part of the thesis ... -
Automated Source Extraction for the Next Generation of Neutral Hydrogen Surveys
Flöer, Lars (2015-12-23)This thesis is a first step to develop the necessary tools to automatically extract and parameterize sources from future HI surveys with ASKAP, WSRT/Apertif, and SKA.
The current approach to large-scale HI surveys, ... -
Beobachtungen der unmittelbaren Umgebung von Supermassiven Schwarzen Löochern Millimeter-VLBI von AGN
Pagels, Anke (2006)Mittels globaler Radiointerferometrie (Very-Long Baseline Interferometry: VLBI) ist es möglich, die unmittelbare Umgebung von Supermassiven Schwarzen Löchern zu beobachten. Die hohe Beobachtungsfrequenz von 86 GHz erlaubt ... -
Binary star population synthesis: Progenitors of gravitational wave driven mergers
Kruckow, Matthias U. (2018-06-13)The vast majority of all massive stars are born in binaries. The binarity of a star may influence its life drastically via a large variety of interactions with its companion star. Several astrophysical events, like the ... -
Challenges of theoretical and numerical structure formation in a ΛCDM universe
Roth, Nina (2015-06-22)Systematic surveys of the extra-galactic sky have revealed the existence of large-scale structures in the Universe: the galaxy distribution is organized in a complex network of filaments surrounding underdense regions and ... -
The cloudy HI halo of the Milky Way
Dedes, Leonidas (2008)Based on the analysis of the Milky Way soft X-ray background and all sky 21-cm line surveys models show that the gaseous Galactic Halo has two components, one of hot plasma with log[T(K)]=6 and a neutral component. If ... -
Clumpy Dust Tori in Active Galactic Nuclei
Hönig, Sebastian Florian (2008)Active Galactic Nuclei (AGN) are amongst the most luminous objects in the universe. The source of their activity is accretion onto a supermassive black hole in the center of the galactic nucleus. The various phenomena ... -
Combined Weak Lensing and X-Ray Search for Galaxy Clusters and the Filaments Connecting Them
Dietrich, Jörg Peter (2006)The work presented here has four main parts.
(1) A newly developed, almost fully automated data reduction pipeline for optical single- and multi-chip CCD cameras is described. Its image products are compared to those ... -
Complex organic chemistry in high-mass star forming regions
Bonfand-Caldeira, Mélisse (2019-10-22)The quest for interstellar complex organic molecules (COMs) lies at the heart of astrochemistry. One basic motivation is to figure out how the rich inventory of COMs found in meteorites and comets is connected to interstellar ... -
Comprehensive population synthesis predictions for massive binary stars in the Small Magellanic Cloud
Xu, Xiao-Tian (2024-01-30)The past and ongoing gravitational wave detections have fostered a wide interest in understanding the formation of binary black holes (BBHs). Several formation scenarios have been proposed, including the evolution of ... -
Cosmic Shear Analysis of the Garching-Bonn-Deep Survey
Hetterscheidt, Marco (2007)We perform a cosmic shear analysis of 15 square degree high-quality R-band data of the Garching-Bonn Deep Survey (GaBoDS) obtained with the Wide-Field-Imager (WFI) at the ESO/MPG 2.2m telescope. The GaBoDS comprises 1.75 ... -
Cosmic Shear and the Intrinsic Alignment of Galaxies
Joachimi, Benjamin (2010-11-12)Cosmology has recently entered an era of increasingly rich observational data sets, all being in agreement with a cosmological standard model that features only a small number of free parameters. One of the most powerful ... -
Cosmological Investigations On Large And Small Scales
Javanmardi, Behnam (2017-03-03)The standard model of cosmology, founded on Einstein’s theory of gravity and on the Cosmological Principle (CP), has been understood as being successful in providing explanations for many observations so far. However, it ... -
Cosmological Parameters from Second- and Third-Order Cosmic Shear Statistics
Kilbinger, Martin (2006)The weak gravitational lensing effect caused by the large-scale structure of the matter in the Universe (cosmic shear) is a powerful tool to study the matter distribution on very large scales. Cosmic shear surveys provide ... -
Cosmology with the galaxy bispectrum
Yankelevich, Victoria (2019-10-29)The last decades witnessed huge progress in understanding the large-scale structure of the Universe. While homogeneous and isotropic on the largest scales, the matter and galaxy distributions display complex patterns on ...