Advanced statistical methods for detecting the Epoch of Reionisation
This thesis investigates the widefield foreground contamination on the expected 21cm power spectrum, by modelling these sources with multi-component 2D Gaussians. Additionally, we calculate the skew spectrum for a set of seven cosmological 21cm simulations, characterising how the higher order statis...
| Main Author: | |
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| Format: | Thesis |
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Curtin University
2023
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| Online Access: | http://hdl.handle.net/20.500.11937/94798 |
| _version_ | 1848765926833389568 |
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| author | Cook, Jaiden Hue |
| author_facet | Cook, Jaiden Hue |
| author_sort | Cook, Jaiden Hue |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This thesis investigates the widefield foreground contamination on the expected 21cm power spectrum, by modelling these sources with multi-component 2D Gaussians. Additionally, we calculate the skew spectrum for a set of seven cosmological 21cm simulations, characterising how the higher order statistic changes with respect to the X-ray heating and ionisation topologies. We then develop an analytical framework for estimating the interferometric skew spectrum, applying this to realistic foreground models, and to a fiducial 21cm simulation. |
| first_indexed | 2025-11-14T11:43:01Z |
| format | Thesis |
| id | curtin-20.500.11937-94798 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:43:01Z |
| publishDate | 2023 |
| publisher | Curtin University |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-947982024-04-10T01:09:06Z Advanced statistical methods for detecting the Epoch of Reionisation Cook, Jaiden Hue This thesis investigates the widefield foreground contamination on the expected 21cm power spectrum, by modelling these sources with multi-component 2D Gaussians. Additionally, we calculate the skew spectrum for a set of seven cosmological 21cm simulations, characterising how the higher order statistic changes with respect to the X-ray heating and ionisation topologies. We then develop an analytical framework for estimating the interferometric skew spectrum, applying this to realistic foreground models, and to a fiducial 21cm simulation. 2023 Thesis http://hdl.handle.net/20.500.11937/94798 Curtin University fulltext |
| spellingShingle | Cook, Jaiden Hue Advanced statistical methods for detecting the Epoch of Reionisation |
| title | Advanced statistical methods for detecting the Epoch of Reionisation |
| title_full | Advanced statistical methods for detecting the Epoch of Reionisation |
| title_fullStr | Advanced statistical methods for detecting the Epoch of Reionisation |
| title_full_unstemmed | Advanced statistical methods for detecting the Epoch of Reionisation |
| title_short | Advanced statistical methods for detecting the Epoch of Reionisation |
| title_sort | advanced statistical methods for detecting the epoch of reionisation |
| url | http://hdl.handle.net/20.500.11937/94798 |