| Full text | |
| Author(s): Show less - |
Wuensche, Carlos A.
;
Villela, Thyrso
;
Abdalla, Elcio
;
Liccardo, Vincenzo
;
Vieira, Frederico
;
Browne, Ian
;
Peel, Michael W.
;
Radcliffe, Christopher
;
Abdalla, Filipe B.
;
Marins, Alessandro
;
Barosi, Luciano
;
Brito, Francisco A.
;
Queiroz, Amilcar R.
;
Wang, Bin
;
Costa, Andre A.
;
Ferreira, Elisa G. M.
;
Fornazier, Karin S. F.
;
Landim, Ricardo G.
;
Novaes, Camila P.
;
Santos, Larissa
;
dos Santos, Marcelo, V
;
Zhang, Jiajun
;
Chen, Tianyue
;
Delabrouille, Jacques
;
Dickinson, Clive
;
de Gasperis, Giancarlo
;
Gurjao, Edmar C.
;
Harper, Stuart
;
Ma, Yin-Zhe
;
Machado, Telmo
;
Maffei, Bruno
;
de Mericia, Eduardo J.
;
Monstein, Christian
;
Motta, Pablo
;
Otobone, Carlos H. N.
;
Reitano, Luiz A.
;
Remazeilles, Mathieu
;
Roychowdhury, Sambit
;
Santos, Joao R. L.
;
Serres, Alexandre J. R.
;
Souza, Andreia P.
;
Strauss, Cesar
;
Vieira, Jordany
;
Xu, Haiguang
Total Authors: 44
|
| Document type: | Journal article |
| Source: | Astronomy & Astrophysics; v. 664, p. 12-pg., 2022-08-03. |
| Abstract | |
Context. The measurement of diffuse 21-cm radiation from the hyperfine transition of neutral hydrogen (Hi signal) in different redshifts is an important tool for modern cosmology. However, detecting this faint signal with non-cryogenic receivers in single-dish telescopes is a challenging task. The BINGO (Baryon Acoustic Oscillations from Integrated Neutral Gas Observations) radio telescope is an instrument designed to detect baryonic acoustic oscillations (BAOs) in the cosmological Hi signal, in the redshift interval 0.127 <= z <= 0.449. Aims. This paper describes the BINGO radio telescope, including the current status of the optics, receiver, observational strategy, calibration, and the site. Methods. BINGO has been carefully designed to minimize systematics, being a transit instrument with no moving dishes and 28 horns operating in the frequency range 980 <= nu <= 1260 MHz. Comprehensive laboratory tests were conducted for many of the BINGO subsystems and the prototypes of the receiver chain, horn, polarizer, magic tees, and transitions have been successfully tested between 2018-2020. The survey was designed to cover similar to 13% of the sky, with the primary mirror pointing at declination delta = similar to 15 degrees. The telescope will see an instantaneous declination strip of 14.75 degrees. Results. The results of the prototype tests closely meet those obtained during the modeling process, suggesting BINGO will perform according to our expectations. After one year of observations with a 60% duty cycle and 28 horns, BINGO should achieve an expected sensitivity of 102 mu K per 9.33MHz frequency channel, one polarization, and be able to measure the Hi power spectrum in a competitive time frame. (AU) | |
| FAPESP's process: | 19/05687-0 - The BINGO telescope 21 cm measurements: Baryon Acoustic Oscillations and Non-gaussianities |
| Grantee: | Carlos Alexandre Wuensche de Souza |
| Support Opportunities: | Research Grants - Visiting Researcher Grant - International |
| 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 Opportunities: | Special Projects |
| FAPESP's process: | 19/06040-0 - Study of the properties of the universe using the cosmic microwave background radiation and large scale structure tracers |
| Grantee: | Camila Paiva Novaes |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 18/02026-0 - Development and characterization of the BINGO Telescope instrumentation |
| Grantee: | Vincenzo Liccardo |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| 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 Opportunities: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 17/21570-0 - The BINGO telescope: a new 21 cm window for exploring the dark universe and other astrophysical phenomena |
| Grantee: | Karin Silvia Franzoni Fornazier Guimarães |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |