The Challenges of Low-Frequency Radio Polarimetry: Lessons from the Murchison Widefield Array
We present techniques developed to calibrate and correct Murchison Widefield Array low-frequency (72–300 MHz) radio observations for polarimetry. The extremely wide field-of-view, excellent instantaneous (u, v)-coverage and sensitivity to degree-scale structure that the Murchison Widefield Array pro...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal Article |
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Cambridge University Press
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/57974 |
| _version_ | 1848760146459623424 |
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| author | Lenc, E. Anderson, C. Barry, N. Bowman, J. Cairns, I. Farnes, J. Gaensler, B. Heald, G. Johnston-Hollitt, M. Kaplan, D. Lynch, C. McCauley, P. Mitchell, D. Morgan, John Morales, M. Murphy, T. Offringa, A. Ord, S. Pindor, B. Riseley, C. Sadler, E. Sobey, Charlotte Sokolowski, Marcin Sullivan, I. O Sullivan, S. Sun, X. Tremblay, S. Trott, Cathryn Wayth, Randall |
| author_facet | Lenc, E. Anderson, C. Barry, N. Bowman, J. Cairns, I. Farnes, J. Gaensler, B. Heald, G. Johnston-Hollitt, M. Kaplan, D. Lynch, C. McCauley, P. Mitchell, D. Morgan, John Morales, M. Murphy, T. Offringa, A. Ord, S. Pindor, B. Riseley, C. Sadler, E. Sobey, Charlotte Sokolowski, Marcin Sullivan, I. O Sullivan, S. Sun, X. Tremblay, S. Trott, Cathryn Wayth, Randall |
| author_sort | Lenc, E. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We present techniques developed to calibrate and correct Murchison Widefield Array low-frequency (72–300 MHz) radio observations for polarimetry. The extremely wide field-of-view, excellent instantaneous (u, v)-coverage and sensitivity to degree-scale structure that the Murchison Widefield Array provides enable instrumental calibration, removal of instrumental artefacts, and correction for ionospheric Faraday rotation through imaging techniques. With the demonstrated polarimetric capabilities of the Murchison Widefield Array, we discuss future directions for polarimetric science at low frequencies to answer outstanding questions relating to polarised source counts, source depolarisation, pulsar science, low-mass stars, exoplanets, the nature of the interstellar and intergalactic media, and the solar environment. |
| first_indexed | 2025-11-14T10:11:08Z |
| format | Journal Article |
| id | curtin-20.500.11937-57974 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:11:08Z |
| publishDate | 2017 |
| publisher | Cambridge University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-579742018-03-27T02:56:11Z The Challenges of Low-Frequency Radio Polarimetry: Lessons from the Murchison Widefield Array Lenc, E. Anderson, C. Barry, N. Bowman, J. Cairns, I. Farnes, J. Gaensler, B. Heald, G. Johnston-Hollitt, M. Kaplan, D. Lynch, C. McCauley, P. Mitchell, D. Morgan, John Morales, M. Murphy, T. Offringa, A. Ord, S. Pindor, B. Riseley, C. Sadler, E. Sobey, Charlotte Sokolowski, Marcin Sullivan, I. O Sullivan, S. Sun, X. Tremblay, S. Trott, Cathryn Wayth, Randall We present techniques developed to calibrate and correct Murchison Widefield Array low-frequency (72–300 MHz) radio observations for polarimetry. The extremely wide field-of-view, excellent instantaneous (u, v)-coverage and sensitivity to degree-scale structure that the Murchison Widefield Array provides enable instrumental calibration, removal of instrumental artefacts, and correction for ionospheric Faraday rotation through imaging techniques. With the demonstrated polarimetric capabilities of the Murchison Widefield Array, we discuss future directions for polarimetric science at low frequencies to answer outstanding questions relating to polarised source counts, source depolarisation, pulsar science, low-mass stars, exoplanets, the nature of the interstellar and intergalactic media, and the solar environment. 2017 Journal Article http://hdl.handle.net/20.500.11937/57974 10.1017/pasa.2017.36 Cambridge University Press fulltext |
| spellingShingle | Lenc, E. Anderson, C. Barry, N. Bowman, J. Cairns, I. Farnes, J. Gaensler, B. Heald, G. Johnston-Hollitt, M. Kaplan, D. Lynch, C. McCauley, P. Mitchell, D. Morgan, John Morales, M. Murphy, T. Offringa, A. Ord, S. Pindor, B. Riseley, C. Sadler, E. Sobey, Charlotte Sokolowski, Marcin Sullivan, I. O Sullivan, S. Sun, X. Tremblay, S. Trott, Cathryn Wayth, Randall The Challenges of Low-Frequency Radio Polarimetry: Lessons from the Murchison Widefield Array |
| title | The Challenges of Low-Frequency Radio Polarimetry: Lessons from the Murchison Widefield Array |
| title_full | The Challenges of Low-Frequency Radio Polarimetry: Lessons from the Murchison Widefield Array |
| title_fullStr | The Challenges of Low-Frequency Radio Polarimetry: Lessons from the Murchison Widefield Array |
| title_full_unstemmed | The Challenges of Low-Frequency Radio Polarimetry: Lessons from the Murchison Widefield Array |
| title_short | The Challenges of Low-Frequency Radio Polarimetry: Lessons from the Murchison Widefield Array |
| title_sort | challenges of low-frequency radio polarimetry: lessons from the murchison widefield array |
| url | http://hdl.handle.net/20.500.11937/57974 |