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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Baryon acoustic oscillations from Integrated Neutral Gas Observations: Broadband corrugated horn construction and testing

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Author(s):
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Wuensche, C. A. [1] ; Reitano, L. [1] ; Peel, M. W. [2, 3, 4] ; Browne, I. W. A. [5] ; Maffei, B. [6] ; Abdalla, E. [2] ; Radcliffe, C. [7] ; Abdalla, F. [8] ; Barosi, L. [9] ; Liccardo, V [1] ; Mericia, E. [1] ; Pisano, G. [10] ; Strauss, C. [1] ; Vieira, F. [1] ; Villela, T. [11, 1] ; Wang, B. [12]
Total Authors: 16
Affiliation:
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[1] Inst Nacl Pesquisas Espaciais INPE, Div Astrofis, Sao Jose Dos Campos, SP - Brazil
[2] Univ Sao Paulo, Inst Fis, Sao Paulo, SP - Brazil
[3] Inst Astrofis Canarias, E-38205 Tenerife - Spain
[4] Univ La Laguna ULL, Dept Astrofis, E-38206 Tenerife - Spain
[5] Univ Manchester, Jodrell Bank Ctr Astrophys, Sch Nat Sci, Dept Phys & Astron, Alan Turing Bldg, Oxford Rd, Manchester M13 9PL, Lancs - England
[6] Univ Paris Sud Paris Saclay, Inst Astrophys Spatiale, F-91405 Orsay - France
[7] Phase2 Microwave Ltd, Unit, Boulton Rd, Pin Green Ind Est, Stevenage SG1 4QX, Herts - England
[8] UCL, Dept Phys, Astron, Gower Pl, London WC1E 6BT - England
[9] Univ Fed Campina Grande, Unidade Acad Fis, Campina Grande, Paraiba - Brazil
[10] Cardiff Univ, Sch Phys & Astron, Cardiff CF10 3AT - Wales
[11] Univ Brasilia, Inst Fis, Brasilia, DF - Brazil
[12] Yangzhou Univ, Ctr Gravitat & Cosmol, Yangzhou 225009, Jiangsu - Peoples R China
Total Affiliations: 12
Document type: Journal article
Source: EXPERIMENTAL ASTRONOMY; v. 50, n. 1 JUL 2020.
Web of Science Citations: 0
Abstract

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. (AU)

FAPESP's process: 18/02026-0 - Development and characterization of the BINGO Telescope instrumentation
Grantee:Vincenzo Liccardo
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 14/07885-0 - The BINGO telescope: a new 21 cm window for exploring the dark universe and other astrophysics
Grantee:Elcio Abdalla
Support type: Research Projects - Thematic Grants
FAPESP's process: 15/19936-1 - BINGO: an ultra-sensitive survey of hydrogen and radio continuum emission to measure the dark universe
Grantee:Michael William Peel
Support type: Research Grants - Young Investigators Grants