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 as the 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 reconstruction performed by the software is appropriate since the resolution measured with both calibrated methods coincides with the theoretical value of the expected resolution.

Angular resolution at map level in the QUBIC instrument / M.M. Gamboa Lerena, C.G. Sc´occola, P. Ade, J.G. Alberro, A. Almela, G. Amico, L.H. Arnaldi, D. Auguste, J. Aumont, S. Azzoni, S. Banfi, E.S. Battistelli, A. Ba`u, B. B´elier, D. Bennett, L. Berg´e, J. Bernard, M. Bersanelli, M.A. Bigot-Sazy, N. Bleurvacq, J. Bonaparte, J. Bonis, A. Bottani, E. Bunn, D. Burke, D. Buzi, F. Cavaliere, P. Chanial, C. Chapron, R. Charlassier, A.C. Cobos Cerutti, F. Columbro, A. Coppolecchia, G. D’Alessandro, P. de Bernardis, G. De Gasperis, M. De Leo, M. De Petris, S. Dheilly, C. Duca, L. Dumoulin, A. Etchegoyen, A. Fasciszewski, L.P. Ferreyro, D. Fracchia, C. Franceschet, K. Ganga, B. Garc´ıa, M.E. Garc´ıa-Redondo, M. Gaspard, D. Gayer, M. Gervasi, M. Giard, V. Gilles, Y. Giraud-Heraud, M. G´omez Berisso, M. Gonz´alez, M. Gradziel, L. Grandsire, J. Hamilton, D. Harari, S. Henrot-Versill´e, D.T. Hoang, F. Incardona, E. Jules, J. Kaplan, C. Kristukat, L. Lamagna, S. Loucatos, T. Louis, B. Maffei, S. Marnieros, W. Marty, S. Masi, A. Mattei, A. May, M. Mcculloch, L. Mele, S. Melhuish, A. Mennella, L. Montier, L. Mousset, L.M. Mundo, J.A. Murphy, J.D. Murphy, F. Nati, E. Olivieri, C. Oriol, C. O’Sullivan, A. Paiella, F. Pajot, A. Passerini, H. Pastoriza, A. Pelosi, C. Perbost, M. Perciballi, F. Pezzotta, F. Piacentini, M. Piat, L. Piccirillo, G. Pisano, M. Platino, G. Polenta, D. Prˆele, R. Puddu, D. Rambaud, P. Ringegni, G.E. Romero, M. Salatino, J.M. Salum, A. Schillaci, S. Scully, S. Spinelli, G. Stankowiak, M. Stolpovskiy, A.D. Supanitsky, A. Tartari, J.P. Thermeau, P. Timbie, M. Tomasi, S. Torchinsky, M. Tristram, G. Tucker, C. Tucker, D. Vigan`o, N. Vittorio, F. Voisin, F. Wicek, M. Zannoni, A. Zullo. - In: BOLETÍN DE LA ASOCIACIÓN ARGENTINA DE ASTRONOMÍA. - ISSN 1669-9521. - 61B:(2020), pp. 155-158. ((Intervento presentato al convegno Reunión anual tenutosi a Viedma nel 2019.

Angular resolution at map level in the QUBIC instrument

S. Banfi;M. Bersanelli;F. Cavaliere;C. Franceschet;F. Incardona;A. Mattei;A. Mennella;F. Pezzotta;M. Tomasi;A. Zullo
2020

Abstract

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 as the 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 reconstruction performed by the software is appropriate since the resolution measured with both calibrated methods coincides with the theoretical value of the expected resolution.
Desde su descubrimiento en los a˜nos 1960, el fondo c´osmico de microondas (CMB, por sus siglas en ingl´es) se ha convertido en una importante herramienta observacional para entender la f´ısica del universo temprano. El par´ametro r, definido como la amplitud de las perturbaciones tensoriales relativas a las escalares, est´a acotado actualmente al rango r &lt; 0.056. QUBIC es un instrumento terrestre dise˜nado para buscar se˜nales muy d´ebiles de los modos B en las anisotrop´ıas de la polarizaci´on a escalas angulares intermedias (l ∼ 30 − 200). Para lograr este objetivo, QUBIC combina dos t´ecnicas muy usadas en la comunidad CMB: interferometr´ıa y bolometr´ıa. En este trabajo calculamos la resoluci´on angular de una simulaci´on end-to-end con dos m´etodos independientes: Fit y Sigma. Concluimos que la reconstrucci´on que realiza el software es apropiada ya que la resoluci´on medida con ambos m´etodos calibrados coincide con los valores te´oricos de la resoluci´on esperada.
cosmic background radiation; early universe; instrumentation: interferometers
Settore FIS/05 - Astronomia e Astrofisica
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/772986
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