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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Baryon acoustic oscillations from Integrated Neutral Gas Observations: Broadband corrugated horn construction and testing
Experimental Astronomy, Volume 50, No. 1, Year 2020
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Description
The Baryon acoustic oscillations from Integrated Neutral Gas Observations (BINGO) telescope is a 40-m class radio telescope under construction that has been designed to measure the large-angular-scale intensity of Hi emission at 980–1260 MHz and hence to constrain dark energy parameters. A large focal plane array comprising of 1.7-metre diameter, 4.3-metre length corrugated feed horns is required in order to optimally illuminate the telescope. Additionally, very clean beams with low sidelobes across a broad frequency range are required, in order to facilitate the separation of the faint Hi emission from bright Galactic foreground emission. Using novel construction methods, a full-sized prototype horn has been assembled. It has an average insertion loss of around − 0.15 dB across the band, with a return loss around 25 dB. The main beam is Gaussian with the first sidelobe at around − 25 dB. A septum polariser to separate the signal into the two hands of circular polarization has also been designed, built and tested. © 2020, Springer Nature B.V.
Authors & Co-Authors
Wuensche, Carlos Alexandre
Brazil, Sao Jose Dos Campos
Instituto Nacional de Pesquisas Espaciais
Reitano, Luiz A.
Brazil, Sao Jose Dos Campos
Instituto Nacional de Pesquisas Espaciais
Peel, Mike W.
Brazil, Sao Paulo
Universidade de São Paulo
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Spain, San Cristobal de la Laguna
Universidad de la Laguna
Browne, Ian W.A.
United Kingdom, Manchester
The University of Manchester
Maffei, Bruno
France, Gif-sur-yvette
Université Paris-saclay
Abdalla, Elcio
Brazil, Sao Paulo
Universidade de São Paulo
Radcliffe, Christopher
United Kingdom, Stevenage
Phase2 Microwave Ltd.
Abdalla, Fillipe Batoni
United Kingdom, London
University College London
Barosi, Luciano
Brazil, Campina Grande
Universidade Federal de Campina Grande
Liccardo, Vincenzo
Brazil, Sao Jose Dos Campos
Instituto Nacional de Pesquisas Espaciais
Mericia, Eduardo
Brazil, Sao Jose Dos Campos
Instituto Nacional de Pesquisas Espaciais
Pisano, Giampaolo
United Kingdom, Cardiff
Cardiff University
Strauss, Cesar
Brazil, Sao Jose Dos Campos
Instituto Nacional de Pesquisas Espaciais
Vieira, Frederico
Brazil, Sao Jose Dos Campos
Instituto Nacional de Pesquisas Espaciais
Villela, Thyrso
Brazil, Sao Jose Dos Campos
Instituto Nacional de Pesquisas Espaciais
Brazil, Brasilia
Universidade de Brasília
Wang, Bin
China, Yangzhou
Yangzhou University
Statistics
Citations: 10
Authors: 16
Affiliations: 12
Identifiers
Doi:
10.1007/s10686-020-09666-9
ISSN:
09226435
Research Areas
Environmental