E-Dissertationen: Search
Now showing items 11-20 of 54
Weak lensing magnification & baryon acoustic oscillations in galaxy-galaxy lensing
(2021-09-08)
Cosmology is the science that aims to explain the Universe in its entirety. While the standard cosmological model has had tremendous success in explaining independent astrophysical observations, we still lack understanding ...
Optical confirmation and weak lensing mass constraints for distant Sunyaev-Zel'dovich-detected galaxy clusters
(2022-03-28)
Galaxy clusters reside in the densest regions of the large-scale matter distribution of the Universe. Therefore, their number density as a function of mass and redshift is a powerful tool for cosmological studies aiming, ...
Radio emission from massive Young Stellar Objects and their surroundings: Characterization and feedback
(2020-10-12)
Massive stars or high-mass stars dominate their galactic environments. They play a major role in the energy budget of galaxies and are essential in their evolution. However, high mass star formation is not fully understood, ...
The isotropy of the Universe as seen through galaxy clusters
(2021-07-07)
The cosmological principle (CP) postulates that the Universe is isotropic and homogeneous. This implies that the Universe has the same expansion rate toward every direction and holds similar amounts of matter when averaged ...
The physical and chemical conditions of molecular clouds on large scales
(2021-09-15)
Observations of molecular emission lines in the radio and (sub)millimetre wavelength regime provide insights into the interiors of molecular clouds which are inaccessible by other forms of radiation. Examining the physical ...
Understanding the impact of massive star formation on its surroundings in Messier 8
(2020-06-04)
Massive stars inject an immense amount of energy into their surroundings, which affect the physics and chemistry of the interstellar medium (ISM). Massive stars play a significant role in the evolution of galaxies. The ...
A LAsMA Survey of the Milky Way: Effects of Feedback on Molecular Clouds
(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, ...
A 3-mm Imaging Line Survey of the Central Molecular Zones of M 82 and IC 342
(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 radio view on the structural evolution of massive star-forming galaxies across cosmic time
(2020-03-06)
It is not well understood what processes regulate the global formation of stars in galaxies throughout cosmic history. My work aims to measure the structural evolution of star-forming galaxies (SFGs), from the present back ...
Die Implementierung des Themas Fernerkundung in den Schulunterricht der Sekundarstufe I durch das neue MINT-Wahlpflichtfach "Geographie-Physik": eine Studie zur praktischen Schulfachgestaltung im Differenzierungsbereich der Jahrgangsstufen 8 und 9 an Gymnasien in Nordrhein-Westfalen am Beispiel des Gymnasiums Siegburg Alleestraße
(2021-10-26)
Schülerinnen und Schüler werden in ihrer Alltagswelt seit dem letzten Jahrzehnt immer früher mit Satellitenbildern konfrontiert. Durch den Wetterbericht und die Nachrichtensendung im Fernsehen oder durch virtuelle Globen ...