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The Phase II Murchison Widefield Array: Design overview

  • Randall B. Wayth (a1), Steven J. Tingay (a1), Cathryn M. Trott (a1) (a2), David Emrich (a1), Melanie Johnston-Hollitt (a1), Ben McKinley (a1) (a2), B. M. Gaensler (a2) (a3), A. P. Beardsley (a4), T. Booler (a1), B. Crosse (a1), T. M. O. Franzen (a1), L. Horsley (a1), D. L. Kaplan (a5), D. Kenney (a1), M. F. Morales (a6), D. Pallot (a7), G. Sleap (a1), K. Steele (a1), M. Walker (a1), A. Williams (a1), C. Wu (a7), Iver. H. Cairns (a8), M. D. Filipovic (a9), S. Johnston (a10), T. Murphy (a8), P. Quinn (a7), L. Staveley-Smith (a2) (a7), R. Webster (a2) (a11) and J. S. B. Wyithe (a2) (a11)...

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 ∼3.5. 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.

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Copyright

Corresponding author

Author for correspondence: Randall B.Wayth, Email: r.wayth@curtin.edu.au

References

Hide All
Abbott, B. P., et al. 2016, ApJ, 826, L13
Abbott, B. P., et al. 2017, ApJ, 848, L12
Ali, Z. S., et al. 2015, ApJ, 809, 61
Barry, N., Hazelton, B., Sullivan, I., Morales, M. F., & Pober, J. C. 2016, MNRAS, 461, 3135
Beardsley, A. P., et al. 2016, ApJ, 833, 102
Benthem, P., et al. 2017, in 2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS), 1, doi: 10.23919/URSIGASS.2017.8104992
Bowman, J. D., et al. 2013, PASA, 30, e031
Chhetri, R., Morgan, J., Ekers, R. D., Macquart, J.-P., Sadler, E. M., Giroletti, M., Callingham, J. R., & Tingay, S. J. 2018, MNRAS, 474, 4937
Condon, J. J. 1974, ApJ, 188, 279
Croft, S., et al. 2016, ApJ, 820, L24
DeBoer, D. R., et al. 2017, PASP, 129, 045001
Dewdney, P. E., & Braun, R. 2016, Technical Report SKA-TEL-SKO-0000422, SKA1-LOW CONFIGURATION COORDINATES - COMPLETE SET. SKA Office
Dillon, J. S., & Parsons, A. R. 2016, ApJ, 826, 181
Franzen, T. M. O., et al. 2016, MNRAS, 459, 3314
Furlanetto, S. R., Oh, S. P., & Briggs, F. H. 2006, PhR, 433, 181
Gupta, Y. 2014, in Astronomical Society of India Conference Series, 441
Hurley-Walker, N., et al. 2017, MNRAS, 464, 1146
Jacobs, D. C., etal. 2015, ApJ, 801, 51
Jacobs, D. C., etal. 2016, ApJ, 825, 114
Kaplan, D. L., et al. 2015a, ApJ, 809, L12
Kaplan, D. L., et al. 2015b, ApJ, 814, L25
Koopmans, L., et al. 2015, in Advancing Astrophysics with the Square Kilometre Array (AASKA14), 1
Li, W., et al. 2018, ApJ, 863, 170
Liu, A., Tegmark, M., Morrison, S., Lutomirski, A., & Zaldarriaga, M. 2010, MNRAS, 408, 1029
Loi, S. T., et al. 2015a, GeoRL, 42, 3707
Loi, S. T., et al. 2015b, RaSc, 50, 574
Mesinger, A., Furlanetto, S., & Cen, R. 2011, MNRAS, 411, 955
Morgan, J. S., et al. 2018, MNRAS, 473, 2965
Offringa, A. R., et al. 2015, PASA, 32, e008
Offringa, A. R., et al. 2016, MNRAS, 458, 1057
Ord, S. M., et al. 2015, PASA, 32, e006
Paciga, G., et al. 2011, MNRAS, 413, 1174
Parsons, A. R., et al. 2010, AJ, 139, 1468
Parsons, A., Pober, J., McQuinn, M., Jacobs, D., & Aguirre, J. 2012, ApJ, 753, 81
Patil, A. H., et al. 2016, MNRAS, 463, 4317
Patil, A. H., et al. 2017, ApJ, 838, 65
Prabu, T., et al. 2015, ExA, 39, 73
Sutinjo, A. T., et al. 2015, ITAP, 63, 5433
Tingay, S. J., et al. 2013a, PASA, 30, e007
Tingay, S. J., et al. 2013b, AJ, 146, 103
Tingay, S. J., etal. 2018, ApJ, 857, 11
Tremblay, S. E., et al. 2015, PASA, 32, e005
Tremblay, C. D., Hurley-Walker, N., Cunningham, M., Jones, P. A., Hancock, P. J., Wayth, R., & Jordan, C. H. 2017, MNRAS, 471, 4144
Trott, C. M., et al. 2016, ApJ, 818, 139
van Haarlem, M. P., et al. 2013, A&A, 556, A2
Wayth, R., et al. 2017, PASA, 34, e034
Wieringa, M. H. 1992, ExA, 2, 203
Wu, C., Wicenec, A., Pallot, D., & Checcucci, A. 2013, ExA, 36, 679
Zhang, X., et al. 2018, MNRAS, 477, 5167
Zheng, H., et al. 2014, MNRAS, 445, 1084
Zheng, Q., Wu, X.-P., Johnston-Hollitt, M., Gu, J.-h., & Xu, H. 2016, ApJ, 832, 190

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The Phase II Murchison Widefield Array: Design overview

  • Randall B. Wayth (a1), Steven J. Tingay (a1), Cathryn M. Trott (a1) (a2), David Emrich (a1), Melanie Johnston-Hollitt (a1), Ben McKinley (a1) (a2), B. M. Gaensler (a2) (a3), A. P. Beardsley (a4), T. Booler (a1), B. Crosse (a1), T. M. O. Franzen (a1), L. Horsley (a1), D. L. Kaplan (a5), D. Kenney (a1), M. F. Morales (a6), D. Pallot (a7), G. Sleap (a1), K. Steele (a1), M. Walker (a1), A. Williams (a1), C. Wu (a7), Iver. H. Cairns (a8), M. D. Filipovic (a9), S. Johnston (a10), T. Murphy (a8), P. Quinn (a7), L. Staveley-Smith (a2) (a7), R. Webster (a2) (a11) and J. S. B. Wyithe (a2) (a11)...

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