Journal article

Dual polarization measurements of MWA beampatterns at 137 MHz

A Chokshi, JLB Line, N Barry, D Ung, D Kenney, A McPhail, A Williams, RL Webster

Monthly Notices of the Royal Astronomical Society | OXFORD UNIV PRESS | Published : 2021

Abstract

ABSTRACT The wide adoption of low-frequency radio interferometers as a tool for deeper and higher resolution astronomical observations has revolutionized radio astronomy. Despite their construction from static, relatively simple dipoles, the sheer number of distinct elements introduces new, complicated instrumental effects. Their necessary remote locations exacerbate failure rates, while electronic interactions between the many adjacent receiving elements can lead to non-trivial instrumental effects. The Murchison Widefield Array (MWA) employs phased array antenna elements (tiles), which improve collecting area at the expense of complex beam shapes. Advanced electromagnetic si..

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University of Melbourne Researchers

Grants

Awarded by Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D)


Funding Acknowledgements

We would like to thank the MWA operations team for their constant support and invaluable engineering expertise. This research was supported by the Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), through project number CE170100013. This scientific work makes use of the Murchison Radio-Astronomy Observatory, operated by CSIRO. We acknowledge theWajarri Yamatji people as the traditional owners of the Observatory site.