Angular resolution at map level in the QUBIC instrument

THE QUBIC COLLABORATION (SEE M. PLATINO IN AUTHOR LIST); MANUEL PLATINO

Boletin de Asociación Argentina de Astronomía

Asociacion Argentina de Astronomia

Lugar: Viedma, Rio Negro; Año: 2020

0571-3285

The Cosmic Microwave Background radiation (CMB) has become a very important observational tool, since its discovery in the 1960s, for understanding the physics of the early Universe. In the last decade, many experiments constrained the amplitude of B-modes polarization (quantified by dimensionless parameter r) at r < 0.056. QUBIC is a ground-based instrument that has been designed to search for very weak B-mode signals in polarization anisotropies at intermediate angular scales (l ∼ 30-200). To achieve this goal, QUBIC combines two widely used techniques in the CMB community: interferometry and bolometry. In this work, we compute the angular resolution for an end-to-end simulation using two independent methods: Fit and Sigma.We conclude that the reconstruction performed by the software is appropriate since the resolution measured with both calibrated methods coincides with the theoretical value of the expected resolution.