The BINGO project

Abstract

Context. Observations of the redshifted 21-cm line of neutral hydrogen (Hi) are a new and powerful window of observation that offers us the possibility to map the spatial distribution of cosmic Hi and learn about cosmology. Baryon Acoustic Oscillations from Integrated Neutral Gas Observations (BINGO) is a new unique radio telescope designed to be one of the first to probe baryon acoustic oscillations (BAO) at radio frequencies.Aims. BINGO has two science goals: cosmology and astrophysics. Cosmology is the main science goal and the driver for BINGO's design and strategy. The key of BINGO is to detect the low redshift BAO to put strong constraints on the dark sector models and test the ΛCDM (cold dark matter) model. Given the versatility of the BINGO telescope, a secondary goal is astrophysics, where BINGO can help discover and study fast radio bursts (FRB) and other transients, as well as study Galactic and extragalactic science. In this paper, we introduce the latest progress of the BINGO project, its science goals, describing the scientific potential of the project for each goal and the new developments obtained by the collaboration. Methods. BINGO is a single dish transit telescope that will measure the BAO at low-z by making a 3D map of the Hi distribution through the technique of intensity mapping over a large area of the sky. In order to achieve the project's goals, a science strategy and a specific pipeline for cleaning and analyzing the produced maps and mock maps was developed by the BINGO team, which we generally summarize here. Results. We introduce the BINGO project and its science goals and give a general summary of recent developments in construction, science potential, and pipeline development obtained by the BINGO collaboration in the past few years. We show that BINGO will be able to obtain competitive constraints for the dark sector. It also has the potential to discover several FRBs in the southern hemisphere. The capacity of BINGO in obtaining information from 21-cm is also tested in the pipeline introduced here. Following these developments, the construction and observational strategies of BINGO have been defined. Conclusions. There is still no measurement of the BAO in radio, and studying cosmology in this new window of observations is one of the most promising advances in the field. The BINGO project is a radio telescope that has the goal to be one of the first to perform this measurement and it is currently being built in the northeast of Brazil. This paper is the first of a series of papers that describe in detail each part of the development of the BINGO project.

The BINGO Project II: Instrument Description

“…We also describe the site, updating the site selection information report in Peel et al (2019). In this series of BINGO papers, besides this paper, we present a general overview of the project (Abdalla et al 2021a), the optical system model (Abdalla et al 2021b), which was carried using the characterization of the horn prototype (Wuensche et al 2020), the mission simulations with the parameters listed in Table 1 (Liccardo et al 2021), and two theoretical papers, one describing 21 cm mock catalogs (Zhang et al 2021) and the other presenting cosmological forecasts for BINGO (Costa et al 2021).…”

“…The BINGO concept was presented in Battye et al (2013) with later updates presented in Dickinson (2014); Bigot-Sazy et al (2015); Battye et al (2016); Wuensche & the BINGO Collaboration (2019). ca.wuensche@inpe.br Other papers describing aspects of the project include the project overview (Abdalla et al 2021a, Paper 1), optical design (Abdalla et al 2021b, Paper 3), mission simulations (Liccardo et al 2021, Paper 4), component separation and bispectrum analysis (Fornazier et al 2021, Paper 5), simulations for a mock 21cm catalog (Zhang et al 2021, Paper 6) and cosmological forecasts for BINGO (Costa et al 2021, Paper 7).…”

The BINGO Project IV: Simulations for mission performance assessment and preliminary component separation steps

“…It will provide excellent polarization performance and very low sidelobe levels required for Hi IM. For a detailed description of the project and the instrument, see the companion papers I and II Abdalla et al (2021a); Wuensche et al (2021).…”

“…The radio band provides a unique and complementary observational window for the understanding of dark energy via the redshifted 21-cm neutral hydrogen emission line from distant galaxies. The BINGO telescope is a proposed new instrument designed specifically to observe such a signal and to provide a new insight into the Universe (Battye et al 2013;Abdalla et al 2021a).…”

“…This is the fourth (IV) of a series of papers describing the BINGO project. The theoretical and instrumental projects are in papers I and II (Abdalla et al 2021a;Wuensche et al 2021), the optical design in paper III (Abdalla et al 2021b), the component separation and correlations in paper V (Fornazier et al 2021), the simulations for a mock 21-cm catalog are described in paper VI (Zhang et al 2021) and the cosmological forecasts for BINGO in paper VII (Costa et al 2021).…”