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Understanding Type Ia Supernova Diversity with PHOENIX
(2022)
Type Ia Supernovae (SNe Ia) are important astrophysical objects. They produce
roughly half of the iron group elements found in the universe, the energy they
release drives the evolution of galaxies, and their high ...
Light Matter Interaction in A Rydberg Blockaded Ensemble
(2022-06-29)
This thesis presents a study of the interactions between two Rydberg atoms and Rydberg atomic ensemble with a monochromatic light field. The first part of the thesis covers the interaction between two Rydberg atoms. The ...
Phenomenology of the String Theory Landscape
(2022)
In this dissertation, we perform a thorough phenomenological study of the string theory landscape. To this end, we compare and contrast the data collected from particle accelerators and detectors against various models of ...
AGN and their environment: a multi-wavelength photometric and spectroscopic study of AGN and galaxy clusters, and the co-evolution of AGN and the large scale structures
(2022)
Active galactic nuclei (AGN) are the central engines hosted by most of the galaxies in the universe and are believed to be actively accreting supermassive black holes. The growth of the central black hole is very closely ...
High Contrast Imaging of Planet-forming Disks with Extreme Adaptive Optics Systems
(2022)
Circumstellar disks serve as benchmark systems to study how and where exoplanets form. With the advent of ground-based extreme adaptive optics (AO) facilities, we have entered a revolutionary era for disk studies. It is ...
Spotting clusters, hunting for planets: a combined study of galaxy clusters in the X-ray and optical regime
(2022-08)
Observational studies of the distribution of galaxies in the Universe reveal inhomogeneity and structure on Mpc and larger scales. Galaxy clusters are the largest gravitationally bound structures containing a virialized ...
Spin-mixing and Interferometry in Microwave-dressed Sodium Spinor Bose-Einstein Condensates
(2022-12-01)
This thesis presents my research on spin-mixing and interferometry in an all-optically generated spinor Bose-Einstein condensate (BEC) of sodium atoms. The sodium atoms are loaded from a magneto-optical trap into a crossed ...
Quantifying the Physics and Energetics of Iron Low-Ionization Broad Absorption-Line Quasar Outflows
(2022)
Quasars are among the most luminous and massive objects in the universe. They host an actively accreting supermassive black hole (SMBH) at their centre that can power energetic phenomena that outshine the host galaxy. A ...
Intervalley Scattering in III-V Heterostructures and its Application to Valley Photovoltaic Hot Carrier Solar Cells
(2022-12-16)
The efficiency limit of 33% for a single gap solar cell is not fundamental. Mitigation of thermalization losses which occur when high energy ‘hot’ carriers are only extracted at the same energy as low energy carriers is a ...
Interaction Effects in Quantum Wires and One-Dimensional Incoherent Semimetals
(2022-08-04)
In this thesis, we address the effect of interactions in low dimensional
systems. In the first part, using bosonization, we study a microscopic
model of parallel quantum wires constructed from two dimensional Dirac
fermions ...