BIGHORNS - Broadband Instrument for Global HydrOgen ReioNisation Signal
The redshifted 21cm line of neutral hydrogen (Hi), potentially observable at low radio frequencies (~50-200 MHz), should be a powerful probe of the physical conditions of the inter-galactic medium during Cosmic Dawn and the Epoch of Reionisation (EoR). The sky-averaged Hi signal is expected to be ex...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Journal Article |
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Cambridge University Press
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/32053 |
| _version_ | 1848753555214696448 |
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| author | Sokolowski, M. Tremblay, S. Wayth, Randall Tingay, Steven Clarke, N. Roberts, P. Waterson, M. Ekers, R. Hall, Peter Lewis, M. Mossammaparast, M. Padhi, S. Schlagenhaufer, F. Sutinjo, Adrian Tickner, J. |
| author_facet | Sokolowski, M. Tremblay, S. Wayth, Randall Tingay, Steven Clarke, N. Roberts, P. Waterson, M. Ekers, R. Hall, Peter Lewis, M. Mossammaparast, M. Padhi, S. Schlagenhaufer, F. Sutinjo, Adrian Tickner, J. |
| author_sort | Sokolowski, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The redshifted 21cm line of neutral hydrogen (Hi), potentially observable at low radio frequencies (~50-200 MHz), should be a powerful probe of the physical conditions of the inter-galactic medium during Cosmic Dawn and the Epoch of Reionisation (EoR). The sky-averaged Hi signal is expected to be extremely weak (~100 mK) in comparison to the foreground of up to 104 K at the lowest frequencies of interest. The detection of such a weak signal requires an extremely stable, well characterised system and a good understanding of the foregrounds. Development of a nearly perfectly (~mK accuracy) calibrated total power radiometer system is essential for this type of experiment. We present the BIGHORNS (Broadband Instrument for Global HydrOgen ReioNisation Signal) experiment which was designed and built to detect the sky-averaged Hi signal from the EoR at low radio frequencies. The BIGHORNS system is a mobile total power radiometer, which can be deployed in any remote location in order to collect radio frequency interference (RFI) free data. The system was deployed in remote, radio quiet locations in Western Australia and low RFI sky data have been collected. We present a description of the system, its characteristics, details of data analysis, and calibration. We have identified multiple challenges to achieving the required measurement precision, which triggered two major improvements for the future system. |
| first_indexed | 2025-11-14T08:26:22Z |
| format | Journal Article |
| id | curtin-20.500.11937-32053 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:26:22Z |
| publishDate | 2015 |
| publisher | Cambridge University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-320532017-09-13T15:16:05Z BIGHORNS - Broadband Instrument for Global HydrOgen ReioNisation Signal Sokolowski, M. Tremblay, S. Wayth, Randall Tingay, Steven Clarke, N. Roberts, P. Waterson, M. Ekers, R. Hall, Peter Lewis, M. Mossammaparast, M. Padhi, S. Schlagenhaufer, F. Sutinjo, Adrian Tickner, J. The redshifted 21cm line of neutral hydrogen (Hi), potentially observable at low radio frequencies (~50-200 MHz), should be a powerful probe of the physical conditions of the inter-galactic medium during Cosmic Dawn and the Epoch of Reionisation (EoR). The sky-averaged Hi signal is expected to be extremely weak (~100 mK) in comparison to the foreground of up to 104 K at the lowest frequencies of interest. The detection of such a weak signal requires an extremely stable, well characterised system and a good understanding of the foregrounds. Development of a nearly perfectly (~mK accuracy) calibrated total power radiometer system is essential for this type of experiment. We present the BIGHORNS (Broadband Instrument for Global HydrOgen ReioNisation Signal) experiment which was designed and built to detect the sky-averaged Hi signal from the EoR at low radio frequencies. The BIGHORNS system is a mobile total power radiometer, which can be deployed in any remote location in order to collect radio frequency interference (RFI) free data. The system was deployed in remote, radio quiet locations in Western Australia and low RFI sky data have been collected. We present a description of the system, its characteristics, details of data analysis, and calibration. We have identified multiple challenges to achieving the required measurement precision, which triggered two major improvements for the future system. 2015 Journal Article http://hdl.handle.net/20.500.11937/32053 10.1017/pasa.2015.3 Cambridge University Press unknown |
| spellingShingle | Sokolowski, M. Tremblay, S. Wayth, Randall Tingay, Steven Clarke, N. Roberts, P. Waterson, M. Ekers, R. Hall, Peter Lewis, M. Mossammaparast, M. Padhi, S. Schlagenhaufer, F. Sutinjo, Adrian Tickner, J. BIGHORNS - Broadband Instrument for Global HydrOgen ReioNisation Signal |
| title | BIGHORNS - Broadband Instrument for Global HydrOgen ReioNisation Signal |
| title_full | BIGHORNS - Broadband Instrument for Global HydrOgen ReioNisation Signal |
| title_fullStr | BIGHORNS - Broadband Instrument for Global HydrOgen ReioNisation Signal |
| title_full_unstemmed | BIGHORNS - Broadband Instrument for Global HydrOgen ReioNisation Signal |
| title_short | BIGHORNS - Broadband Instrument for Global HydrOgen ReioNisation Signal |
| title_sort | bighorns - broadband instrument for global hydrogen reionisation signal |
| url | http://hdl.handle.net/20.500.11937/32053 |