Angular resolution at map level in the QUBIC instrument

GAMBOA- LERENA, M.M.; C. G. SCOCCOLA; AND THE QUBIC COLLABORATION

Viedma

Congreso; 61 Reunión Anual de la Asociación Argentina de Astronomía; 2019

Universidad Nacional de Río Negro

Since its discovery in the 1960s, the cosmic microwave background (CMB) radiation has become a very important observational tool to understand the physics of the early universe. The parameter r, defined asthe relative amplitude of tensor to scalar perturbations, is currently constrained to the range r < 0.056. QUBIC is a ground-based instrument 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 reconstructionperformed by the software is appropriate since the resolution measured with both calibrated methods coincides with the theoretical value of the expected resolution.