Fakultät für Physik (inkl. GAUSS)
Recent Submissions
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Inferring atomic line parameters from solar spectra
(2024-09-19)The proximity of the Earth to the Sun offers a unique opportunity to study different plasma phenomena that occur in its atmosphere, which are unattainable in plasma laboratories. Advances in the instruments used for solar ... -
Iterative helioseismic holography
(2024-08-28)The understanding of the solar interior, in particular the subsurface solar flows, is im- portant for understanding the solar activity cycle. Traditional local helioseismology does not use all the seismic information ... -
Investigation of boundary layer transition at high Reynolds numbers using time-resolved temperature-sensitive paint
(2024-08-23)Understanding the fundamental principles of the processes that lead to laminar-turbulent transition on aerodynamic surfaces is of significant importance to correctly describe, model and perhaps ultimately influence the ... -
Radio-frequency controlled low-energy electron pulses
(2024-08-23)Electron beams are invaluable for probing material structures and dynamic processes due to their large scattering cross sections and the versatility of tunable electron optics for diffraction and microscopy. Pulsed electron ... -
Investigation of Cells and Cellular Components with X-Rays in Liquid Sample Environments
(2024-08-07)Due to their short wavelength, X-rays offer a high spatial resolution and a high ability to penetrate soft condensed matter. Therefore, X-rays are well-suited for investigating structures and structural changes in in-vitro ... -
Self-Organization of Filamentous Cyanobacteria
(2024-07-29)Cyanobacteria are phototrophic prokaryotes that occur in almost any natural habitat on Earth, from polar to tropical climates, from the Archaean to the present. Roughly 2.5 billion years ago, they have generated the ... -
Collisional droplet growth in a turbulent environment
(2024-07-18)It is a long-standing problem to find the mechanisms how the onset of rain occurs as rapidly as observed in warm clouds. In the so-called size gap, where neither condensation nor gravitational settling can explain efficient ... -
Stellar Activity and Radial Velocities in M Dwarfs
(2024-07-17)Stellar activity is one of the principal obstacles to achieving sub 1 m/s radial velocity precision in exoplanet detection surveys. Understanding how stellar activity affects the stellar environment is crucial to mitigating ... -
Deep Learning Methods for the Analysis of Cardiac Function in Real-Time MRI
(2024-07-17)Magnetic resonance imaging (MRI) is an essential imaging modality in today's medical field and allows the visualization of soft tissue without the use of ionizing radiation. For cardiac magnetic resonance imaging (CMR), ... -
Measurement of the Branching Ratio $B \to D^{**} \ell \nu_{\ell}$ using the hadronic Full Event Interpretation with Belle II Data
(2024-07-17)The Belle II detector is situated at the asymmetric $e^{-}e^{+}$ collider SuperKEKB at KEK in Tsukuba in Japan, which operates with an energy slightly above the mass of the Y(4S) resonance. As a result, pairs of B mesons ... -
Global-Scale Rossby Waves on Stars
(2024-07-17)Rossby waves (r-modes) arise due to the conservation of absolute vorticity on rotating spheres. The waves govern the large-scale dynamics of the Earth's atmosphere/oceans and have been intensively studied during decades. ... -
Reaction-Driven Assembly and Diffusiophoresis: Mechanisms for Control and Organization of Life-like Systems
(2024-07-12)The interior of cells, a fundamental building block of biological systems, is a hetero- geneous environment comprised of a multitude of molecular species. Its organization in the form of aggregates and compartments is ... -
Characterisation of CMOS Sensors for the Belle II Vertex Detector Upgrade
(2024-07-12)The Belle II experiment at KEK in Japan plans to upgrade the SuperKEKB accelerator by the end of the decade. This gives rise to the opportunity to upgrade the current vertex detector system to address the high background ... -
Investigation of active mechanical properties in the cytoplasm of living cells
(2024-07-09)Over the past decades, the study of intracellular active mechanical properties has experienced a growth in interest. This is mainly caused by recognizing that vital cellular functions rely on the intricate interplay ... -
Characterization and modeling of ultrasound propagation and cavitation in confined flow geometries
(2024-07-08)Acoustic cavitation is a process by which small bubbles are formed in a liquid that is exposed to sound waves such as ultrasound. These bubbles are peculiar because they expand and collapse violently on themselves resulting ... -
The Use of Feynman Diagrams in Physics Education: Opportunities, Challenges, Practices
(2024-06-28)This thesis explores the potential of Feynman diagrams as educational tools in upper secondary physics education, specifically for teaching particle physics concepts. It is set within the design-based research (DBR) ... -
Ionenstrahlanalytik zum Nachweis von Wasserstoff und Lithium mittels MeV Ionen
(2024-06-24)Light elements are not amenable to most analytical methods. In this work, ion beam analysis was used to detect hydrogen and lithium in materials. For the detection of hydrogen, coincident scattering and the resonant ... -
High Precision Spectroscopy of the Solar Surface
(2024-06-17)Context: High-precision spectroscopy of the resolved solar surface provides benchmark observations for a vast field of stellar research. The solar spectrum exhibits variations from the disc centre to the limb. Observing ... -
Investigations of the solar dynamo within the framework of the Babcock-Leighton mechanism
(2024-06-13)Sunspots are dark blemishes on the surface of the Sun whose number waxes and wanes over the course of approximately eleven years. This solar cycle is believed to be powered by a hydromagnetic dynamo, whereby the interaction ... -
Structure and Dynamics of Discussions on the Social Media Platform Reddit
(2024-05-28)The last fifteen years have witnessed a tremendous rise in the impact of online social media on our lives. Platforms such as Facebook, Twitter, YouTube, and Reddit have radically changed the way we communicate and consume ...