A Clustered Extragalactic Foreground Model for the EoR
© 2018 International Astronomical Union. We review an improved statistical model of extra-galactic point-source foregrounds first introduced in Murray et al. (2017), in the context of the Epoch of Reionization. This model extends the instrumentally-convolved foreground covariance used in inverse-cov...
| Main Authors: | , , |
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| Format: | Journal Article |
| Published: |
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/68978 |
| _version_ | 1848761936271900672 |
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| author | Murray, Steven Trott, Cathryn Jordan, Christopher |
| author_facet | Murray, Steven Trott, Cathryn Jordan, Christopher |
| author_sort | Murray, Steven |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2018 International Astronomical Union. We review an improved statistical model of extra-galactic point-source foregrounds first introduced in Murray et al. (2017), in the context of the Epoch of Reionization. This model extends the instrumentally-convolved foreground covariance used in inverse-covariance foreground mitigation schemes, by considering the cosmological clustering of the sources. In this short work, we show that over scales of k ~ (0.6, 40.)hMpc -1 , ignoring source clustering is a valid approximation. This is in contrast to Murray et al. (2017), who found a possibility of false detection if the clustering was ignored. The dominant cause for this change is the introduction of a Galactic synchrotron component which shadows the clustering of sources. |
| first_indexed | 2025-11-14T10:39:35Z |
| format | Journal Article |
| id | curtin-20.500.11937-68978 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:39:35Z |
| publishDate | 2018 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-689782018-06-29T12:35:37Z A Clustered Extragalactic Foreground Model for the EoR Murray, Steven Trott, Cathryn Jordan, Christopher © 2018 International Astronomical Union. We review an improved statistical model of extra-galactic point-source foregrounds first introduced in Murray et al. (2017), in the context of the Epoch of Reionization. This model extends the instrumentally-convolved foreground covariance used in inverse-covariance foreground mitigation schemes, by considering the cosmological clustering of the sources. In this short work, we show that over scales of k ~ (0.6, 40.)hMpc -1 , ignoring source clustering is a valid approximation. This is in contrast to Murray et al. (2017), who found a possibility of false detection if the clustering was ignored. The dominant cause for this change is the introduction of a Galactic synchrotron component which shadows the clustering of sources. 2018 Journal Article http://hdl.handle.net/20.500.11937/68978 10.1017/S174392131701119X restricted |
| spellingShingle | Murray, Steven Trott, Cathryn Jordan, Christopher A Clustered Extragalactic Foreground Model for the EoR |
| title | A Clustered Extragalactic Foreground Model for the EoR |
| title_full | A Clustered Extragalactic Foreground Model for the EoR |
| title_fullStr | A Clustered Extragalactic Foreground Model for the EoR |
| title_full_unstemmed | A Clustered Extragalactic Foreground Model for the EoR |
| title_short | A Clustered Extragalactic Foreground Model for the EoR |
| title_sort | clustered extragalactic foreground model for the eor |
| url | http://hdl.handle.net/20.500.11937/68978 |