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EDGES-3: Instrument Design and Commissioning

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arxiv 2508.02577 v1 pith:YZ2VHZO2 submitted 2025-08-04 astro-ph.IM astro-ph.CO

EDGES-3: Instrument Design and Commissioning

Rigel C. Cappallo , Alan E. E. Rogers , Colin J. Lonsdale , Judd D. Bowman , John P. Barrett , Steven G. Murray , Nivedita Mahesh , Peter Sims
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Akshatha K. Vydula Raul A. Monsalve Christopher J. Eckert Parker Steen Kenneth M. Wilson
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keywords edges-3instrumentaustraliabeenchallengesdataedgesglobal
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EDGES-3 is the third iteration of the EDGES experiment, designed to measure the predicted global absorption feature in the radio spectrum produced by neutral hydrogen gas at cosmic dawn, a critical observation determining when and how the first stars populated the universe. The EDGES-3 instrument has been redesigned to include both the analog and digital electronics within the antenna, allowing for in-situ calibration and removal of the lossy balun found in EDGES-2. EDGES-3 has been on multiple deployments in the past 4 years; to Oregon, Devon Island, Adak Island, and is currently installed and taking data in the outback of Western Australia. This paper provides an accounting of the challenges inherent in the detection of the global, cosmological 21-cm signal, the strategies EDGES employs to mitigate each of these challenges, a description of the instrument, and a report on the Western Australia deployment along with observational data.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. The EDGES Analysis Pipeline: Description and Validation

    astro-ph.IM 2026-05 unverdicted novelty 7.0

    The EDGES team publishes the first full public description of its 21-cm global-signal analysis pipeline, an open-source end-to-end software package, and the raw data from prior observations.

  2. Global 21cm Measurement Calibration Methodology

    astro-ph.CO 2026-07 accept novelty 5.0

    Three-way Dicke switching is inadequate for broadband global 21cm work; five independent calibrators plus the classical four noise parameters yield the correct absolute temperature, and Rogers & Bowman (2012) missed |...