BINGO

BINGO (for Baryon Acoustic Oscillations in Neutral Gas Observations) is a radio telescope under construction in Brazil to detect baryon acoustic oscillations (BAOs) through intensity mapping of the 21-cm line to produce a three-dimensional map of neutral atomic hydrogen out to z ≈ 0.5. It is also expected to detect fast radio bursts (FRBs). It is a transit telescope with 40-meter non-moving reflectors configured as a cross Dragone telescope, focusing on a 28-feedhorn array, also non-moving. It will cover a 15-degree declination strip of the celestial sphere centered on declination -15°, yielding a survey field of about 13% of the sky. It will acquire sufficient integration time for the target signal-to-noise ratio through its daily repeated observations. It is expected to be completed in 2026.