First Season MWA Phase II Epoch of Reionization Power Spectrum Results at Redshift 7
The compact configuration of Phase II of the Murchison Widefield Array (MWA) consists of both a redundant subarray and pseudo-random baselines, offering unique opportunities to perform sky-model and redundant interferometric calibration. The highly redundant hexagonal cores give improved power spect...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
IOP Publishing Ltd
2019
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/1911.10216 http://hdl.handle.net/20.500.11937/91566 |
| _version_ | 1848765549513801728 |
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| author | Li, W. Pober, J.C. Barry, N. Hazelton, B.J. Morales, M.F. Trott, Cathryn Lanman, A. Wilensky, M. Sullivan, I. Beardsley, A.P. Booler, Tom Bowman, J.D. Byrne, R. Crosse, B. Emrich, David Franzen, Thomas Hasegawa, K. Horsley, L. Johnston-Hollitt, Melanie Jacobs, D.C. Jordan, Chris Joseph, R.C. Kaneuji, T. Kaplan, D.L. Kenney, David Kubota, K. Line, Jack Lynch, Christene McKinley, Ben Mitchell, D.A. Murray, Steven Pallot, D. Pindor, B. Rahimi, M. Riding, J. Sleap, G. Steele, K. Takahashi, K. Tingay, Steven Walker, Mia Wayth, Randall Webster, R.L. Williams, Andrew Wu, C. Wyithe, J.S.B. Yoshiura, S. Zheng, Q. |
| author_facet | Li, W. Pober, J.C. Barry, N. Hazelton, B.J. Morales, M.F. Trott, Cathryn Lanman, A. Wilensky, M. Sullivan, I. Beardsley, A.P. Booler, Tom Bowman, J.D. Byrne, R. Crosse, B. Emrich, David Franzen, Thomas Hasegawa, K. Horsley, L. Johnston-Hollitt, Melanie Jacobs, D.C. Jordan, Chris Joseph, R.C. Kaneuji, T. Kaplan, D.L. Kenney, David Kubota, K. Line, Jack Lynch, Christene McKinley, Ben Mitchell, D.A. Murray, Steven Pallot, D. Pindor, B. Rahimi, M. Riding, J. Sleap, G. Steele, K. Takahashi, K. Tingay, Steven Walker, Mia Wayth, Randall Webster, R.L. Williams, Andrew Wu, C. Wyithe, J.S.B. Yoshiura, S. Zheng, Q. |
| author_sort | Li, W. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The compact configuration of Phase II of the Murchison Widefield Array (MWA) consists of both a redundant subarray and pseudo-random baselines, offering unique opportunities to perform sky-model and redundant interferometric calibration. The highly redundant hexagonal cores give improved power spectrum sensitivity. In this paper, we present the analysis of nearly 40 hr of data targeting one of the MWA's epoch of reionization (EoR) fields observed in 2016. We use both improved analysis techniques presented in Barry et al. and several additional techniques developed for this work, including data quality control methods and interferometric calibration approaches. We show the EoR power spectrum limits at redshift 6.5, 6.8, and 7.1 based on our deep analysis on this 40 hr data set. These limits span a range in k-space of 0.18 h Mpc-1 < k < 1.6 h Mpc-1, with a lowest measurement of Δ2 ≤ 2.39 × 103 mK2 at k = 0.59 h Mpc-1 and z = 6.5. |
| first_indexed | 2025-11-14T11:37:01Z |
| format | Journal Article |
| id | curtin-20.500.11937-91566 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:37:01Z |
| publishDate | 2019 |
| publisher | IOP Publishing Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-915662023-05-16T07:05:56Z First Season MWA Phase II Epoch of Reionization Power Spectrum Results at Redshift 7 Li, W. Pober, J.C. Barry, N. Hazelton, B.J. Morales, M.F. Trott, Cathryn Lanman, A. Wilensky, M. Sullivan, I. Beardsley, A.P. Booler, Tom Bowman, J.D. Byrne, R. Crosse, B. Emrich, David Franzen, Thomas Hasegawa, K. Horsley, L. Johnston-Hollitt, Melanie Jacobs, D.C. Jordan, Chris Joseph, R.C. Kaneuji, T. Kaplan, D.L. Kenney, David Kubota, K. Line, Jack Lynch, Christene McKinley, Ben Mitchell, D.A. Murray, Steven Pallot, D. Pindor, B. Rahimi, M. Riding, J. Sleap, G. Steele, K. Takahashi, K. Tingay, Steven Walker, Mia Wayth, Randall Webster, R.L. Williams, Andrew Wu, C. Wyithe, J.S.B. Yoshiura, S. Zheng, Q. Science & Technology Physical Sciences Astronomy & Astrophysics BASE-LINE CALIBRATION INTERFEROMETRIC DATA COSMOLOGY MITEOR LIMITS ARRAY astro-ph.CO astro-ph.CO astro-ph.IM The compact configuration of Phase II of the Murchison Widefield Array (MWA) consists of both a redundant subarray and pseudo-random baselines, offering unique opportunities to perform sky-model and redundant interferometric calibration. The highly redundant hexagonal cores give improved power spectrum sensitivity. In this paper, we present the analysis of nearly 40 hr of data targeting one of the MWA's epoch of reionization (EoR) fields observed in 2016. We use both improved analysis techniques presented in Barry et al. and several additional techniques developed for this work, including data quality control methods and interferometric calibration approaches. We show the EoR power spectrum limits at redshift 6.5, 6.8, and 7.1 based on our deep analysis on this 40 hr data set. These limits span a range in k-space of 0.18 h Mpc-1 < k < 1.6 h Mpc-1, with a lowest measurement of Δ2 ≤ 2.39 × 103 mK2 at k = 0.59 h Mpc-1 and z = 6.5. 2019 Journal Article http://hdl.handle.net/20.500.11937/91566 10.3847/1538-4357/ab55e4 English https://arxiv.org/abs/1911.10216 http://purl.org/au-research/grants/arc/CE170100013 http://purl.org/au-research/grants/arc/FT180100321 http://purl.org/au-research/grants/arc/LE160100031 IOP Publishing Ltd restricted |
| spellingShingle | Science & Technology Physical Sciences Astronomy & Astrophysics BASE-LINE CALIBRATION INTERFEROMETRIC DATA COSMOLOGY MITEOR LIMITS ARRAY astro-ph.CO astro-ph.CO astro-ph.IM Li, W. Pober, J.C. Barry, N. Hazelton, B.J. Morales, M.F. Trott, Cathryn Lanman, A. Wilensky, M. Sullivan, I. Beardsley, A.P. Booler, Tom Bowman, J.D. Byrne, R. Crosse, B. Emrich, David Franzen, Thomas Hasegawa, K. Horsley, L. Johnston-Hollitt, Melanie Jacobs, D.C. Jordan, Chris Joseph, R.C. Kaneuji, T. Kaplan, D.L. Kenney, David Kubota, K. Line, Jack Lynch, Christene McKinley, Ben Mitchell, D.A. Murray, Steven Pallot, D. Pindor, B. Rahimi, M. Riding, J. Sleap, G. Steele, K. Takahashi, K. Tingay, Steven Walker, Mia Wayth, Randall Webster, R.L. Williams, Andrew Wu, C. Wyithe, J.S.B. Yoshiura, S. Zheng, Q. First Season MWA Phase II Epoch of Reionization Power Spectrum Results at Redshift 7 |
| title | First Season MWA Phase II Epoch of Reionization Power Spectrum Results at Redshift 7 |
| title_full | First Season MWA Phase II Epoch of Reionization Power Spectrum Results at Redshift 7 |
| title_fullStr | First Season MWA Phase II Epoch of Reionization Power Spectrum Results at Redshift 7 |
| title_full_unstemmed | First Season MWA Phase II Epoch of Reionization Power Spectrum Results at Redshift 7 |
| title_short | First Season MWA Phase II Epoch of Reionization Power Spectrum Results at Redshift 7 |
| title_sort | first season mwa phase ii epoch of reionization power spectrum results at redshift 7 |
| topic | Science & Technology Physical Sciences Astronomy & Astrophysics BASE-LINE CALIBRATION INTERFEROMETRIC DATA COSMOLOGY MITEOR LIMITS ARRAY astro-ph.CO astro-ph.CO astro-ph.IM |
| url | https://arxiv.org/abs/1911.10216 https://arxiv.org/abs/1911.10216 https://arxiv.org/abs/1911.10216 https://arxiv.org/abs/1911.10216 http://hdl.handle.net/20.500.11937/91566 |