Browsing Fakultät für Physik (inkl. GAUSS) by Advisor & Referee "Kneer, Franz Prof. Dr."
Now showing items 1-20 of 23
-
Multi-wavelength Observations of Coronal Waves and Oscillations in Association with Solar Eruptions
(2011-08-11)This thesis presents an observational study of the relationship between flares and filament eruptions, and associated waves and oscillations in flare loops and ambient corona. A detailed ... -
Signatur von Stossfronten in verschmelzenden und aktiven Galaxien. Optische/UV- und Roentgenbeobachtungen
(2010-08-16)Merging galaxy system Markarian 266 (also NGC 5256) is a double nucleus system. This system lies at a distance of 115 Mpc. The two nuclei are thought to comprise a low-ionization nuclear ... -
Magnetic Activity at the Poles of the Sun
(2008-11-11)This work sheds light on the role of polar faculae with respect to the global magnetic field of the Sun, on the basis of high spatial resolution spectropolarimetric observations, while ... -
Spectropolarimetry of sunspot penumbrae
(2007-01-03)This work presents a detailed study of the fine structure of sunspot penumbrae by means of observations with high spatial resolution and forward modelling. The use of image reconstruction ... -
Simulationsrechnungen anisoplanatischer Übertragungsfunktionen für solare Adaptive Optik
(2006-11-06)With the Adaptive Optics (AO) System KAOS (Kiepenheuer Adaptive Optics System), installed at the Vacuum-Tower-Telescope (VTT) on Tenerife (Spain) and developed at the Kiepenheuer-Institut ... -
Magnetic flux emergence in the solar photosphere
(2006-06-29)The most prominent magnetic structures on the surface of the Sun are bipolar active regions. These magnetic complexes are comprised of a hierarchy of magnetic structures of different sizes, ... -
Kinetische Plasmaprozesse und Welle-Teilchen-Wechselwirkung von Ionen im schnellen Sonnenwind
(2006-04-07)Many important properties of the fast solar wind may only be explained by plasma waves that interact with solar-wind particles. The quasi-linear approximation to this interaction, which is ... -
A feasibility study about the use of vector tomography for the reconstruction of the coronal magnetic field
(2006-03-20)The magnetic field contains the dominant energy per unit volume in the solar corona and therefore plays an important role in most coronal phenomena. But until now, no direct measurement of ... -
Arrival times in quantum mechanics: Operational and quantum optical approaches
(2005-07-29)The theoretical analysis of time observables in quantum mechanics has been controversial and is still subject to debate. In the present work, a measurement-based approach to quantum arrival ... -
Analysis of short-period waves in the solar chromosphere
(2005-07-15)Short-period acoustic waves were suggested as the source of the mechanical heating of the solar chromosphere. In this work the connection of the waves with the sub-photosphere, the temporal ... -
Observations and modeling of polar faculae on the Sun
(2004-12-21)In this work the structure and dynamics of polar faculae on the Sun, which constitute an important part of the magnetic solar cycle, were studied by means of high resolution spectropolarimetric ... -
Quiet Sun Magnetic Fields
(2004-11-03)The aim of this Thesis is the study of the quiet Sun magnetic fields. They are characterized by weak polarization signals due to their small-scale coverage of the solar surface, but with the availability of new, high-sensitivity ... -
Molecular dynamics of clathrin proteins at endocytic sites studied with evanescent-wave microscopy
(2004-10-04)Clathrin (consisting of a light chain and a heavy chain subunit) is a triskelion-shaped molecule that self-assembles into polyhedral lattices on cellular membranes. It has a pivotal role ... -
Three-dimensional simulations of magneto-convection in the solar photosphere
(2004-03-22)The interaction between convective flows and magnetic fields in the solar photosphere and uppermost layers of the convection zone is crucial for many aspects of solar activity and plays an ... -
Equatorial Coronal Holes and Their Relation to the High-Speed Solar Wind Streams
(2003-11-18)The heating of the solar corona and the origin and acceleration of the solar wind are among the important unsolved problems of space plasma and solar physics. Coronal holes (CHs) have been ... -
Struktur und Dynamik kleinskaliger Magnetfelder der Sonnenatmosphäre
(2003-07-25)Two-dimensional spectrograms were obtained at the Vacuum Tower Telescope, Tenerife, in order to study the structure of small scale magnetic fields on the Sun. The speckle reconstruction ... -
Multi-dimensional Polarized Radiative Transfer Modeling of Titan's Atmosphere
(2003-07-25)The primary purpose of this thesis work is to develop a multi-dimensional radiative transfer model, which includes polarization, for Titan"s atmosphere and to validate this model. The model ... -
Untersuchung der Wechselwirkung von Magnetfeldkonzentrationen und konvektiven Stroemungen mit dem Strahlungsfeld in der Photosphaere der Sonne
(2002-04-30)The development of small scale magnetic flux concentrations, its dynamical interaction with convective flows is investigated through twodimensional simulations of the solar magnetoconvektion ... -
Kleinskalige Magnetfelder der Sonne und ihr Einfluß auf Chromosphäre, Übergangszone und Korona
(2001-09-21)During coordinated international observation campaign with the ground-based telescopes GCT (Gregory-Coudé-Telescope) and VTT (Vacuum-Tower-Telescope) and the UV/EUV Telescope SUMER ... -
Untersuchung polarer Fackeln mittels Bildrekonstruktion und Inversionstechniken
(2001-08-15)With both German Solar Telescopes in Tenerife polar faculae were observed in the FeI Lines of 630,15 and 630,25 nm. Out of the GCTs data an analytical model of the dependence of the Parameters ...