The Phase II Murchison Widefield Array: Design overview

Randall B. Wayth, Steven J. Tingay, Cathryn M. Trott, David Emrich, Melanie Johnston-Hollitt, Ben McKinley, B. M. Gaensler, A. P. Beardsley, T. Booler, B. Crosse, T. M.O. Franzen, L. Horsley, D. L. Kaplan, D. Kenney, M. F. Morales, D. Pallot, G. Sleap, K. Steele, M. Walker, A. Williams & 9 others C. Wu, Iver H. Cairns, M. D. Filipovic, S. Johnston, T. Murphy, P. Quinn, L. Staveley-Smith, R. Webster, J. S.B. Wyithe

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We describe the motivation and design details of the 'Phase II' upgrade of the Murchison Widefield Array radio telescope. The expansion doubles to 256 the number of antenna tiles deployed in the array. The new antenna tiles enhance the capabilities of the Murchison Widefield Array in several key science areas. Seventy-two of the new tiles are deployed in a regular configuration near the existing array core. These new tiles enhance the surface brightness sensitivity of the array and will improve the ability of the Murchison Widefield Array to estimate the slope of the Epoch of Reionisation power spectrum by a factor of -1/43.5. The remaining 56 tiles are deployed on long baselines, doubling the maximum baseline of the array and improving the array u, v coverage. The improved imaging capabilities will provide an order of magnitude improvement in the noise floor of Murchison Widefield Array continuum images. The upgrade retains all of the features that have underpinned the Murchison Widefield Array's success (large field of view, snapshot image quality, and pointing agility) and boosts the scientific potential with enhanced imaging capabilities and by enabling new calibration strategies.

Original languageEnglish
Article numbere033
Number of pages9
JournalPublications of the Astronomical Society of Australia
Volume35
DOIs
Publication statusPublished - 23 Nov 2018

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tiles
antenna
antennas
radio telescopes
field of view
acceleration (physics)
power spectra
brightness
time measurement
radio
slopes
continuums
calibration
expansion
sensitivity
estimates
configurations

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Wayth, R. B., Tingay, S. J., Trott, C. M., Emrich, D., Johnston-Hollitt, M., McKinley, B., ... Wyithe, J. S. B. (2018). The Phase II Murchison Widefield Array: Design overview. Publications of the Astronomical Society of Australia, 35, [e033]. https://doi.org/10.1017/pasa.2018.37
Wayth, Randall B. ; Tingay, Steven J. ; Trott, Cathryn M. ; Emrich, David ; Johnston-Hollitt, Melanie ; McKinley, Ben ; Gaensler, B. M. ; Beardsley, A. P. ; Booler, T. ; Crosse, B. ; Franzen, T. M.O. ; Horsley, L. ; Kaplan, D. L. ; Kenney, D. ; Morales, M. F. ; Pallot, D. ; Sleap, G. ; Steele, K. ; Walker, M. ; Williams, A. ; Wu, C. ; Cairns, Iver H. ; Filipovic, M. D. ; Johnston, S. ; Murphy, T. ; Quinn, P. ; Staveley-Smith, L. ; Webster, R. ; Wyithe, J. S.B. / The Phase II Murchison Widefield Array : Design overview. In: Publications of the Astronomical Society of Australia. 2018 ; Vol. 35.
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Wayth, RB, Tingay, SJ, Trott, CM, Emrich, D, Johnston-Hollitt, M, McKinley, B, Gaensler, BM, Beardsley, AP, Booler, T, Crosse, B, Franzen, TMO, Horsley, L, Kaplan, DL, Kenney, D, Morales, MF, Pallot, D, Sleap, G, Steele, K, Walker, M, Williams, A, Wu, C, Cairns, IH, Filipovic, MD, Johnston, S, Murphy, T, Quinn, P, Staveley-Smith, L, Webster, R & Wyithe, JSB 2018, 'The Phase II Murchison Widefield Array: Design overview' Publications of the Astronomical Society of Australia, vol. 35, e033. https://doi.org/10.1017/pasa.2018.37

The Phase II Murchison Widefield Array : Design overview. / Wayth, Randall B.; Tingay, Steven J.; Trott, Cathryn M.; Emrich, David; Johnston-Hollitt, Melanie; McKinley, Ben; Gaensler, B. M.; Beardsley, A. P.; Booler, T.; Crosse, B.; Franzen, T. M.O.; Horsley, L.; Kaplan, D. L.; Kenney, D.; Morales, M. F.; Pallot, D.; Sleap, G.; Steele, K.; Walker, M.; Williams, A.; Wu, C.; Cairns, Iver H.; Filipovic, M. D.; Johnston, S.; Murphy, T.; Quinn, P.; Staveley-Smith, L.; Webster, R.; Wyithe, J. S.B.

In: Publications of the Astronomical Society of Australia, Vol. 35, e033, 23.11.2018.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The Phase II Murchison Widefield Array

T2 - Design overview

AU - Wayth, Randall B.

AU - Tingay, Steven J.

AU - Trott, Cathryn M.

AU - Emrich, David

AU - Johnston-Hollitt, Melanie

AU - McKinley, Ben

AU - Gaensler, B. M.

AU - Beardsley, A. P.

AU - Booler, T.

AU - Crosse, B.

AU - Franzen, T. M.O.

AU - Horsley, L.

AU - Kaplan, D. L.

AU - Kenney, D.

AU - Morales, M. F.

AU - Pallot, D.

AU - Sleap, G.

AU - Steele, K.

AU - Walker, M.

AU - Williams, A.

AU - Wu, C.

AU - Cairns, Iver H.

AU - Filipovic, M. D.

AU - Johnston, S.

AU - Murphy, T.

AU - Quinn, P.

AU - Staveley-Smith, L.

AU - Webster, R.

AU - Wyithe, J. S.B.

PY - 2018/11/23

Y1 - 2018/11/23

N2 - We describe the motivation and design details of the 'Phase II' upgrade of the Murchison Widefield Array radio telescope. The expansion doubles to 256 the number of antenna tiles deployed in the array. The new antenna tiles enhance the capabilities of the Murchison Widefield Array in several key science areas. Seventy-two of the new tiles are deployed in a regular configuration near the existing array core. These new tiles enhance the surface brightness sensitivity of the array and will improve the ability of the Murchison Widefield Array to estimate the slope of the Epoch of Reionisation power spectrum by a factor of -1/43.5. The remaining 56 tiles are deployed on long baselines, doubling the maximum baseline of the array and improving the array u, v coverage. The improved imaging capabilities will provide an order of magnitude improvement in the noise floor of Murchison Widefield Array continuum images. The upgrade retains all of the features that have underpinned the Murchison Widefield Array's success (large field of view, snapshot image quality, and pointing agility) and boosts the scientific potential with enhanced imaging capabilities and by enabling new calibration strategies.

AB - We describe the motivation and design details of the 'Phase II' upgrade of the Murchison Widefield Array radio telescope. The expansion doubles to 256 the number of antenna tiles deployed in the array. The new antenna tiles enhance the capabilities of the Murchison Widefield Array in several key science areas. Seventy-two of the new tiles are deployed in a regular configuration near the existing array core. These new tiles enhance the surface brightness sensitivity of the array and will improve the ability of the Murchison Widefield Array to estimate the slope of the Epoch of Reionisation power spectrum by a factor of -1/43.5. The remaining 56 tiles are deployed on long baselines, doubling the maximum baseline of the array and improving the array u, v coverage. The improved imaging capabilities will provide an order of magnitude improvement in the noise floor of Murchison Widefield Array continuum images. The upgrade retains all of the features that have underpinned the Murchison Widefield Array's success (large field of view, snapshot image quality, and pointing agility) and boosts the scientific potential with enhanced imaging capabilities and by enabling new calibration strategies.

KW - early universe

KW - instrumentation: interferometers

KW - radio continuum: general

KW - radio lines: general

KW - techniques: interferometric

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U2 - 10.1017/pasa.2018.37

DO - 10.1017/pasa.2018.37

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VL - 35

JO - Publications of the Astronomincal Society of Australia (PASA)

JF - Publications of the Astronomincal Society of Australia (PASA)

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Wayth RB, Tingay SJ, Trott CM, Emrich D, Johnston-Hollitt M, McKinley B et al. The Phase II Murchison Widefield Array: Design overview. Publications of the Astronomical Society of Australia. 2018 Nov 23;35. e033. https://doi.org/10.1017/pasa.2018.37