Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Large Millimeter"”.
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Optical and Quasi-Optical Design and Analysis of Astronomical Instrumentation including a Prototype SAFARI Pixel
… suited to the simulation of electrically large optical systems at millimeter wavelengths. Additionally, several commercial software packages were used and experimental measurements conducted for the purpose of both validating the newly developed simulation techniques, as well as simulating …
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Characterizing alma for solar observation
ALMA (Atacama Large Millimeter/submillimeter Array) is an antenna array of 66 antennas located in northern Chile at 5000 meters altitude. It is the largest ground-based array operated at millimeter/submillimeter wavelengths. In this thesis, the advantages of using ALMA for solar observation are …
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Spectroscopic studies of star-forming galaxies and the intergalactic medium in the early Universe
… observational facilities, such as the Very Large Telescope (VLT), Hubble Space Telescope (HST), and Atacama Large Millimeter/submillimeter Array (ALMA), have enabled us to perform detailed spectroscopic analyses of distant galaxies well into the Epoch of Reionisation (EoR). This crucial …
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Characterizing sub-mm observations of protoplanetary disks at super-resolution scales
… with instruments such as the Atacama Large Millimeter Array (ALMA) and the Karl G. Jansky Very Large Array (VLA) is markedly advancing the protoplanetary disk field. By further improving our methods to reconstruct high fidelity (in terms of both resolution and sensitivity) images from …
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Connecting models and observations of disc evolution and planet formation
… young stars. Over the last decade, the Atacama Large Millimeter/submillimeter Array revolutionised our understanding of planet formation, opening up the possibility of determining the physical-chemical properties of protoplanetary discs and their secular evolution. Both are essential ingredients …
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Multiphase Galactic Outflows: Physical Properties and Feedback Effects
… route is through galactic outflows, which eject large amounts of gas and thereby remove the fuel for future star formation. Such galactic outflows can be driven by active galactic nuclei (AGN) or processes associated with star formation such as supernovae or radiation pressure from young stellar …
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Probing planetary system histories via observations, experiments, and modelling of circumstellar gas and dust
… is to examine archival data from the Atacama Large Millimeter Array for the HD~172555 system. This system is unique among debris disks due to its atypical dust composition. We detect the presence of carbon monoxide gas in the circumstellar debris. By considering the morphology and composition …
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The distribution of dark matter at large scales and in gravitational lenses
… functions in measuring the clustering of large-scale structures in cosmology. I examine the counts-in-cells probability distribution functions that describe dark matter halos in the Dark Energy Universe Simulations (DEUS) and describe the measurements between redshifts $z=0$ to $z=4$ on …
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An Earthly Response to Movement. Moving Images Diffracted Through New Materialism
This practice-led research follows my exploration of the Sierra Negra astronomical observatories in Mexico, as well as other sites and temporalities where my practice has drifted: it flows from the heights of two volcanos, across Idaho during a total eclipse of the sun, and into the waters of the …
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Observations of disks around the youngest protostars: Characterizing frequency, dust properties, and magnetic fields at the earliest times
… to support a disk. What is the frequency of large Class 0 and I protostellar disks, and what are their properties? We analyze dust continuum emission data toward all young protostellar disk candidates around Class 0 and I sources in the Perseus molecular cloud from the 8 mm VLA Nascent Disk …