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 11 of 11 for “"Single dish"”.
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Probing diffuse galactic synchrotron emission using meerkat single dish data
… MHz) data the 21 cm signal was probed using the single dish mode. However, initially the RFI and the most dominant foreground in our Galaxy which is the synchrotron emission had to be investigated, so they could be removed. This process also provided another validation for the existing data …
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A study of satellite contamination for single dish Hi intensity mapping with MeerKAT
… of observation using the MeerKAT telescope’s 64 dish array in single dish mode. In this work, we attempt to use the higher L-Band frequency data (1300 - 1500 MHz) and understand the foreground behavior at higher frequencies. We use a foreground removal pipeline used for previous works with the …
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Characterizing alma for solar observation
… Chapter 2. Methods for constructing images from single dish data as well as the procedure for processing interferometer data, including calibration and imaging, are given in Chapter 3. The CLEAN algorithm that is used for producing images is also discussed in this chapter. Examples of processed …
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Luminous blue variable stars: exploring the mass-loss history through a multiwavelength analysis of their ejecta
… space telescopes and interferometric and single-dish telescopes. Among the most interesting results in this work there are: the discovery of a recently formed shell in one of our sources and the evidence that galactic and magellanic objects do not differ despite the different metallicity.
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Submillimeter heterodyne spectroscopy of star forming regions
… speed over the existing dual polarization single beam receiver at the telescope now by a factor of ∼16. Both these receiver systems enable scientific projects requiring large area imaging that were previously impossible. I also discuss two scientific applications of sub-mm wave receiver …
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Improving the Resolution and Sensitivity of Microwave Astronomical Observations
… as well as higher resolutions for both single-dish and interferometric observations. In this work I will be giving an overview of my work on one current and one future experiment: TolTEC, a millimetre-wave camera with polarization capabilities on the Large Millimetre Telescope in Mexico …
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The Development of a Small Scale Radio Astronomy Image Synthesis Array for Research in Radio Frequency Interference Mitigation
… RFI mitigation has been demonstrated for a large single dish telescope, for synthesis imaging arrays our prior work has consisted solely of algorithm development and computer simulations. To test our algorithms on experimental data we need an image synthesis array at BYU. The primary contribution …
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GPU-based acceleration of radio interferometry point source visibility simulations in the MeqTrees framework
… radiation signals in deep space. While single dish radio telescopes convert the electromagnetic radiation directly into an image of the sky (or sky intensity map), interferometers convert the interference patterns between dishes in the array into samples of the Fourier plane (UV-data or …
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The formation of high-mass stars and stellar clusters in the extreme environment of the Central Molecular Zone
… formation. The research presented makes use of single-dish and interferometric far-infrared and (sub-)millimetre observations to study their global and small-scale properties. A comparison of the known young massive clusters (YMCs) and their likely progenitors (the dust ridge clouds) in the CMZ …
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Deep HI observations of nearby late-type galaxies
… KAT-7 and MeerKAT AR1, and the large size of the single-dish GBT that make these telescopes ideal for detecting faint structures, the observations revealed no clear detection of low column density Hi clouds down to a typical sensitivity of ∼2.2 × 1018 cm−2 that could be associated to gas accretion …
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Deep HI observations of nearby late-type galaxies
… KAT-7 and MeerKAT AR1, and the large size of the single-dish GBT that make these telescopes ideal for detecting faint structures, the observations revealed no clear detection of low column density Hi clouds down to a typical sensitivity of ∼2.2 × 1018 cm−2 that could be associated to gas accretion …