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

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Liccardo, Vincenzo ; de Mericia, Eduardo J. ; Wuensche, Carlos A. ; Abdalla, Elcio ; Abdalla, Filipe B. ; Barosi, Luciano ; Brito, Francisco A. ; Queiroz, Amilcar ; Villela, Thyrso ; Peel, Michael W. ; Wang, Bin ; Costa, Andre A. ; Ferreira, Elisa G. M. ; Fornazier, Karin S. F. ; Novaes, Camila P. ; Santos, Larissa ; dos Santos, Marcelo, V ; Remazeilles, Mathieu ; Zhang, Jiajun ; Dickinson, Clive ; Harper, Stuart ; Landim, Ricardo G. ; Marins, Alessandro ; Vieira, Frederico

• Document type: Journal article
• Source: Astronomy & Astrophysics; v. 664, p. 16-pg., 2022-08-03.

Abstract

Aims. The large-scale distribution of neutral hydrogen (HI) 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 degrees x 6.0 degrees. 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. (AU)

• 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: 19/05687-0 - 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: 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
• 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