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...
| Príomhchruthaitheoirí: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Formáid: | Journal article |
| Foilsithe / Cruthaithe: |
Cambridge University Press
2017
|
| _version_ | 1826292661240201216 |
|---|---|
| author | Lenc, E Anderson, CS Barry, N Bowman, JD Cairns, IH Farnes, JS Gaensler, BM Heald, G Johnston-Hollitt, M Kaplan, DL Lynch, CR McCauley, PI Mitchell, DA Morgan, J Morales, MF Murphy, T Offringa, AR Ord, SM Pindor, B Riseley, C Sadler, EM Sobey, C Sokolowski, M Sullivan, IS O’Sullivan, SP Sun, XH Tremblay, SE Trott, CM Wayth, RB |
| author_facet | Lenc, E Anderson, CS Barry, N Bowman, JD Cairns, IH Farnes, JS Gaensler, BM Heald, G Johnston-Hollitt, M Kaplan, DL Lynch, CR McCauley, PI Mitchell, DA Morgan, J Morales, MF Murphy, T Offringa, AR Ord, SM Pindor, B Riseley, C Sadler, EM Sobey, C Sokolowski, M Sullivan, IS O’Sullivan, SP Sun, XH Tremblay, SE Trott, CM Wayth, RB |
| author_sort | Lenc, E |
| collection | OXFORD |
| 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 | 2024-03-07T03:18:08Z |
| format | Journal article |
| id | oxford-uuid:b6832be8-08b1-41d5-9dc7-b70813ca4e47 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T03:18:08Z |
| publishDate | 2017 |
| publisher | Cambridge University Press |
| record_format | dspace |
| spelling | oxford-uuid:b6832be8-08b1-41d5-9dc7-b70813ca4e472022-03-27T04:41:31ZThe challenges of low-frequency radio polarimetry: Lessons from the Murchison widefield arrayJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:b6832be8-08b1-41d5-9dc7-b70813ca4e47Symplectic Elements at OxfordCambridge University Press2017Lenc, EAnderson, CSBarry, NBowman, JDCairns, IHFarnes, JSGaensler, BMHeald, GJohnston-Hollitt, MKaplan, DLLynch, CRMcCauley, PIMitchell, DAMorgan, JMorales, MFMurphy, TOffringa, AROrd, SMPindor, BRiseley, CSadler, EMSobey, CSokolowski, MSullivan, ISO’Sullivan, SPSun, XHTremblay, SETrott, CMWayth, RBWe 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. |
| spellingShingle | Lenc, E Anderson, CS Barry, N Bowman, JD Cairns, IH Farnes, JS Gaensler, BM Heald, G Johnston-Hollitt, M Kaplan, DL Lynch, CR McCauley, PI Mitchell, DA Morgan, J Morales, MF Murphy, T Offringa, AR Ord, SM Pindor, B Riseley, C Sadler, EM Sobey, C Sokolowski, M Sullivan, IS O’Sullivan, SP Sun, XH Tremblay, SE Trott, CM Wayth, RB 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 |
| work_keys_str_mv | AT lence thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT andersoncs thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT barryn thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT bowmanjd thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT cairnsih thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT farnesjs thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT gaenslerbm thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT healdg thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT johnstonhollittm thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT kaplandl thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT lynchcr thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT mccauleypi thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT mitchellda thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT morganj thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT moralesmf thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT murphyt thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT offringaar thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT ordsm thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT pindorb thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT riseleyc thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT sadlerem thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT sobeyc thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT sokolowskim thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT sullivanis thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT osullivansp thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT sunxh thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT tremblayse thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT trottcm thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT waythrb thechallengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT lence challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT andersoncs challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT barryn challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT bowmanjd challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT cairnsih challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT farnesjs challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT gaenslerbm challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT healdg challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT johnstonhollittm challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT kaplandl challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT lynchcr challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT mccauleypi challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT mitchellda challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT morganj challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT moralesmf challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT murphyt challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT offringaar challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT ordsm challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT pindorb challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT riseleyc challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT sadlerem challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT sobeyc challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT sokolowskim challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT sullivanis challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT osullivansp challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT sunxh challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT tremblayse challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT trottcm challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray AT waythrb challengesoflowfrequencyradiopolarimetrylessonsfromthemurchisonwidefieldarray |