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Science with the Murchison Widefield Array: Phase l results and Phase II opportunities

  • A. P. Beardsley
  • , M. Johnston-Hollitt
  • , C. M. Trott
  • , J. C. Pober
  • , J. Morgan
  • , D. Oberoi
  • , D. L. Kaplan
  • , C. R. Lynch
  • , G. E. Anderson
  • , P. I. McCauley
  • , S. Croft
  • , C. W. James
  • , O. I. Wong
  • , C. D. Tremblay
  • , R. P. Norris
  • , I. H. Cairns
  • , C. J. Lonsdale
  • , P. J. Hancock
  • , B. . Gaensler
  • , N. D. R. Bhat
  • W. Li, N. Hurley-Walker, J. R. Callingham, N. Seymour, S. Yoshiura, R. C. Joseph, K. Takahashi, M. Sokolowski, J. C. A. Miller-Jones, J. V. Chauhan, I. Bojičić, M. D. Filipović, D. Leahy, H. Su, W. W. Tian, S. J. McSweeney, B. W. Meyers, S. Kitaeff, T. Vernstrom, G. Gürkan, G. Heald, M. Xue, C. J. Riseley, S. W. Duchesne, J. D. Bowman, D. C. Jacobs, B. Crosse, D. Emrich, T. M. O. Franzen, L. Horsley, D. Kenney, M. F. Morales, D. Pallot, K. Steele, S. J. Tingay, M. Walker, R.B. Wayth, A. Williams, C. Wu
  • Arizona State University
  • Curtin University
  • ARC Centre of Excellence for All-sky Astrophysics
  • Brown University
  • Tata Institute of Fundamental Research
  • University of Wisconsin-Milwaukee
  • ARC Centre of Excellence for All-Sky Astrophysics in 3 Dimensions (ASTRO 3D)
  • The University of Sydney
  • University of California at Berkeley
  • University of Western Australia
  • CSIRO Astronomy and Space Science, Australia
  • MIT Haystack Observatory
  • University of Toronto
  • Netherlands Institute for Radio Astronomy
  • University of Melbourne
  • Kumamoto University
  • University of Calgary
  • CAS - National Astronomical Observatories
  • Università degli Studi di Bologna
  • University of Washington

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)

Abstract

The Murchison Widefield Array (MWA) is an open access telescope dedicated to studying the low-frequency (80-300 MHz) southern sky. Since beginning operations in mid-2013, the MWA has opened a new observational window in the southern hemisphere enabling many science areas. The driving science objectives of the original design were to observe 21 cm radiation from the Epoch of Reionisation (EoR), explore the radio time domain, perform Galactic and extragalactic surveys, and monitor solar, heliospheric, and ionospheric phenomena. All together $60+$ programs recorded 20 000 h producing 146 papers to date. In 2016, the telescope underwent a major upgrade resulting in alternating compact and extended configurations. Other upgrades, including digital back-ends and a rapid-response triggering system, have been developed since the original array was commissioned. In this paper, we review the major results from the prior operation of the MWA and then discuss the new science paths enabled by the improved capabilities. We group these science opportunities by the four original science themes but also include ideas for directions outside these categories. There is an Author Correction to the Article - https://doi.org/10.1017/pasa.2020.4
Original languageEnglish
Article numbere050
Number of pages30
JournalPublications of the Astronomical Society of Australia
Volume36
DOIs
Publication statusPublished - 2019

Keywords

  • antenna arrays
  • radio astronomy
  • radio telescopes

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