Survey parameters for detecting 21-cm-Ly a emitter cross-correlations with the Square Kilometre Array
Detections of the cross-correlation signal between the 21 cm signal during reionization and high-redshift Lyman-a(Ly a) emitters (LAEs) are subject to observational uncertainties which mainly include systematics associated with radio interferometers and LAE selection. These uncertainties can be redu...
| Main Authors: | , , |
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| Format: | Journal Article |
| Published: |
Wiley-Blackwell Publishing Ltd.
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/72335 |
| _version_ | 1848762723285860352 |
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| author | Hutter, A. Trott, Cathryn Dayal, P. |
| author_facet | Hutter, A. Trott, Cathryn Dayal, P. |
| author_sort | Hutter, A. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Detections of the cross-correlation signal between the 21 cm signal during reionization and high-redshift Lyman-a(Ly a) emitters (LAEs) are subject to observational uncertainties which mainly include systematics associated with radio interferometers and LAE selection. These uncertainties can be reduced by increasing the survey volume and/or the survey luminosity limit, i.e. the faintest detectable Ly a luminosity. We use our model of high-redshift LAEs and the underlying reionization state to compute the uncertainties of the 21-cm-LAE crosscorrelation function at z ?6.6 for observations with SKA1-Low and LAE surveys with ?z =0.1 for three different values of the average inter-galactic medium (IGM) ionization state (<?HI>? 0.1, 0.25, 0.5). At z?6.6, we find SILVERRUSH type surveys, with a field of view of 21 deg2and survey luminosity limits of La=7.9×1042erg s-1, to be optimal to distinguish between an IGM that is 50, 25, and 10 per cent neutral, while surveys with smaller fields of view and lower survey luminosity limits, such as the 5 and 10 deg2surveys with WFIRST, can only discriminate between a 50 and 10 per cent neutral IGM. |
| first_indexed | 2025-11-14T10:52:06Z |
| format | Journal Article |
| id | curtin-20.500.11937-72335 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:52:06Z |
| publishDate | 2018 |
| publisher | Wiley-Blackwell Publishing Ltd. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-723352019-02-14T07:24:05Z Survey parameters for detecting 21-cm-Ly a emitter cross-correlations with the Square Kilometre Array Hutter, A. Trott, Cathryn Dayal, P. Detections of the cross-correlation signal between the 21 cm signal during reionization and high-redshift Lyman-a(Ly a) emitters (LAEs) are subject to observational uncertainties which mainly include systematics associated with radio interferometers and LAE selection. These uncertainties can be reduced by increasing the survey volume and/or the survey luminosity limit, i.e. the faintest detectable Ly a luminosity. We use our model of high-redshift LAEs and the underlying reionization state to compute the uncertainties of the 21-cm-LAE crosscorrelation function at z ?6.6 for observations with SKA1-Low and LAE surveys with ?z =0.1 for three different values of the average inter-galactic medium (IGM) ionization state (<?HI>? 0.1, 0.25, 0.5). At z?6.6, we find SILVERRUSH type surveys, with a field of view of 21 deg2and survey luminosity limits of La=7.9×1042erg s-1, to be optimal to distinguish between an IGM that is 50, 25, and 10 per cent neutral, while surveys with smaller fields of view and lower survey luminosity limits, such as the 5 and 10 deg2surveys with WFIRST, can only discriminate between a 50 and 10 per cent neutral IGM. 2018 Journal Article http://hdl.handle.net/20.500.11937/72335 10.1093/mnrasl/sly115 Wiley-Blackwell Publishing Ltd. fulltext |
| spellingShingle | Hutter, A. Trott, Cathryn Dayal, P. Survey parameters for detecting 21-cm-Ly a emitter cross-correlations with the Square Kilometre Array |
| title | Survey parameters for detecting 21-cm-Ly a emitter cross-correlations with the Square Kilometre Array |
| title_full | Survey parameters for detecting 21-cm-Ly a emitter cross-correlations with the Square Kilometre Array |
| title_fullStr | Survey parameters for detecting 21-cm-Ly a emitter cross-correlations with the Square Kilometre Array |
| title_full_unstemmed | Survey parameters for detecting 21-cm-Ly a emitter cross-correlations with the Square Kilometre Array |
| title_short | Survey parameters for detecting 21-cm-Ly a emitter cross-correlations with the Square Kilometre Array |
| title_sort | survey parameters for detecting 21-cm-ly a emitter cross-correlations with the square kilometre array |
| url | http://hdl.handle.net/20.500.11937/72335 |