The BINGO project

IV. Simulations for mission performance assessment and preliminary component separation steps

¹ Divisão de Astrofísica, Instituto Nacional de Pesquisas Espaciais - INPE, Av. dos Astronautas 1758, 12227-010 São José dos Campos, SP, Brazil
e-mail: vic2000@hotmail.it
² Instituto de Física, Universidade de São Paulo, 05315-970 São Paulo, Brazil
³ University College London, Gower Street, London WC1E 6BT, UK
⁴ Department of Physics and Electronics, Rhodes University, PO Box 94 Grahamstown, 6140, South Africa
⁵ Unidade Acadêmica de Física, Universidade Federal de Campina Grande, R. Aprígio Veloso, 58429-900 Bodocongó, Campina Grande, PB, Brazil
⁶ Instituto de Física, Universidade de Brasília, Campus Universitário Darcy Ribeiro, 70910-900 Brasília, DF, Brazil
⁷ Center for Gravitation and Cosmology, College of Physical Science and Technology, Yangzhou University, Yangzhou 225009, PR China
⁸ Max-Planck-Institut für Astrophysik, Karl-Schwarzschild Str. 1, 85741 Garching, Germany
⁹ Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
¹⁰ Technische Universität München, Physik-Department T70, James-Franck-Stra β e 1, 85748 Garching, Germany
¹¹ School of Aeronautics and Astronautics, Shanghai Jiao Tong University, Shanghai 200240, PR China
¹² Center for Theoretical Physics of the Universe, Institute for Basic Science (IBS), Daejeon 34126, Korea
¹³ Instituto de Astrofísica de Canarias, 38200 La Laguna, Tenerife, Canary Islands, Spain
¹⁴ Departamento de Astrofísica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain
¹⁵ Departamento de Física, Universidade Federal da Paraíba, Caixa Postal 5008, 58051-970 João Pessoa, Paraíba, Brazil
¹⁶ Centro de Gestão e Estudos Estratégicos SCS Qd 9, Lote C, Torre C s/n Salas 401 a 405, 70308-200 Brasília, DF, Brazil

Received: 25 March 2021
Accepted: 14 July 2021

Abstract

Aims. The large-scale distribution of neutral hydrogen (H I) in the Universe is luminous through its 21 cm emission. The goal of the Baryon Acoustic Oscillations from Integrated Neutral Gas Observations (BINGO) radio telescope is to detect baryon acoustic oscillations at radio frequencies through 21 cm intensity mapping (IM). The telescope will span the redshift range 0.127 < z < 0.449 with an instantaneous field-of-view of 14.75° ×6.0°.

Methods. In this work we investigate different constructive and operational scenarios of the instrument by generating sky maps as they would be produced by the instrument. In doing this we use a set of end-to-end IM mission simulations. The maps will additionally be used to evaluate the efficiency of a component separation method (GNILC).

Results. We have simulated the kind of data that would be produced in a single-dish IM experiment such as BINGO. According to the results obtained, we have optimized the focal plane design of the telescope. In addition, the application of the GNILC method on simulated data shows that it is feasible to extract the cosmological signal across a wide range of multipoles and redshifts. The results are comparable with the standard principal component analysis method.