Browsing Fakultät für Physik (inkl. GAUSS) by Referee "Dreizler, Stefan Prof. Dr."
Now showing items 1-20 of 59
-
Radial velocity search for extrasolar planets around late M dwarfs
(2025-08-29)The radial velocity (RV) method has revealed the presence of rocky exoplanets in the habitable zones of M dwarf stars in the Solar neighborhood. Some of the potentially most Earth-like exoplanets have been found orbiting ... -
Stellar variability of M stars in the context of exoplanet detection and characterisation
(2025-08-29)The detection and characterisation of exoplanets around M dwarfs is an important aspect in the search for low-mass planets outside our Solar System. M dwarfs are excellent targets for radial velocity (RV) detection due to ... -
Constraining the Properties of Multiple Populations in Globular Clusters
(2025-07-31)Classically, all stars in a globular cluster are assumed to be very similar in age and chemical composition because they are thought to originate from the same giant molecular cloud. In recent years, researchers have ... -
Connecting the Dots: Dust Particle Tracking at Comet 67P/Churyumov-Gerasimenko
(2025-05-21)Comets and their characteristic plasma and dust tails have been intriguing people for millennia. Early theories about their nature were for example already developed by the ancient Chinese and Greek, but it was not until ... -
Small-scale dynamics and large-scale stability of the outer solar atmosphere
(2025-04-14)The Sun has long been utilized as an observatory for gaining a better understanding of high-energy plasma physics. With the advent of the space age and the continual improvement of Sun-observing instruments, physicists ... -
Characterisation of exoplanet atmospheres with high-resolution spectroscopy
(2025-03-07)High-resolution spectroscopic observations offer a powerful approach to investigate planetary atmospheric composition and dynamics. Absorption and emission spectral lines serve as valuable diagnostics, as their strength, ... -
Modeling spectral and total solar irradiance variability from any vantage point in the Solar System
(2024-12-17)The Sun is the primary external energy source for all planets in the Solar System. Its radiative flux, known as solar irradiance, plays a crucial role in planetary atmosphere modeling. Accurate spectral solar irradiance ... -
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 ... -
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 ... -
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 ... -
Primordial Magnetic Fields: Evolution and Signatures
(2024-05-21)Magnetic fields permeate our Universe on all cosmic scales: from planets and stars to the large-scale fields found in galaxies and galaxy clusters. Different observational methods, such as the ones using the Faraday rotation ... -
Global scale magnetic field extrapolation in the solar corona using a Yin Yang grid
(2024-05-06)The solar magnetic field significantly influences and structures the solar coronal plasma as magnetic forces are the dominant forces within the solar corona. Therefore, an in-depth understanding of the phenomena that occur ... -
Vektorfeldkonzepte in der Studieneingangsphase Physik
(2024-04-16)The visualization of vector fields as vector field diagrams finds its application in various physics areas and also provides a valuable learning opportunity for physics students. By visualizing concepts and properties of ... -
Modelling the evolution of small bipolar regions on the Sun
(2023-10-23)Solar activity affects life on Earth in various ways, from geomagnetic storms to the terrestrial climate. The driver of solar activity is the solar magnetic field, which manifests itself in the form of small and large-scale ... -
A search for the Rieger-type periodicity on the Sun- like stars
(2023-10-06)Solar activity undergoes variations over many different timescales. The main periodicity is 11 years, called Schwabe cycle. In addition to the 11-year cycle, shorter periodic variations known as Rieger cycles have been ... -
Exoplanet Atmosphere Characterization with High-Resolution Doppler Spectroscopy
(2023-03-24)Ultra-hot Jupiters (UHJs) are a class of giant strongly irradiated exoplanets with dayside temperatures exceeding 2200 K. Due to their elevated temperatures, these objects are prime targets for atmospheric characterization ... -
Technologiebezogene Professionalisierung angehender Physiklehrkräfte - Entwicklung und Evaluation eines Lehrkonzepts in der Astrophysik mit digitalen Medien
(2022-09-09)This thesis discusses the development and empirical evaluation of a university course in the form of an astrophysics tutorial that focuses on teaching and learning with digital media. Framed by design-based research, an ... -
How does stellar convection impact the detection of small planets at high radial velocity precision?
(2022-08-15)One of the big driving forces behind exoplanet research is the search for an Earth-twin to answer the old question of whether or not humanity is alone in the universe. According to simple logic as well as our current ... -
The tilt and twist of emerging solar active regions
(2022-04-26)The aim of this thesis is to characterize the tilt and twist of the emerging magnetic field in the solar photosphere, which play an important role in understanding the origin and dynamics of the solar magnetic field. The ...