QUBIC II: Spectro-Polarimetry with Bolometric Interferometry
Creators: name: Mousset, L.
name: Lerena, M. M. Gamboa
name: Battistelli, E. S.
name: de Bernardis, P.
name: Chanial, P.
name: D'Alessandro, G.
name: Dashyan, G.
name: De Petris, M.
name: Grandsire, L.
name: Hamilton, J. -Ch.
name: Incardona, F.
name: Landau, S.
name: Marnieros, S.
name: Masi, S.
name: Mennella, A.
name: O'Sullivan, C.
name: Piat, M.
name: Ricciardi, G.
name: Scóccola, C. G.
name: Stolpovskiy, M.
name: Tartari, A.
name: Thermeau, J. -P.
name: Torchinsky, S. A.
name: Voisin, F.
name: Zannoni, M.
name: Ade, P.
name: Alberro, J. G.
name: Almela, A.
name: Amico, G.
name: Arnaldi, L. H.
name: Auguste, D.
name: Aumont, J.
name: Azzoni, S.
name: Banfi, S.
name: Bélier, B.
name: Baù, A.
name: Bennett, D.
name: Bergé, L.
name: Bernard, J. -Ph.
name: Bersanelli, M.
name: Bigot-Sazy, M. -A.
name: Bonaparte, J.
name: Bonis, J.
name: Bunn, E.
name: Burke, D.
name: Buzi, D.
name: Cavaliere, F.
name: Chapron, C.
name: Charlassier, R.
name: Cerutti, A. C. Cobos
name: Columbro, F.
name: Coppolecchia, A.
name: De Gasperis, G.
name: De Leo, M.
name: Dheilly, S.
name: Duca, C.
name: Dumoulin, L.
name: Etchegoyen, A.
name: Fasciszewski, A.
name: Ferreyro, L. P.
name: Fracchia, D.
name: Franceschet, C.
name: Ganga, K. M.
name: García, B.
name: Redondo, M. E. García
name: Gaspard, M.
name: Gayer, D.
name: Gervasi, M.
name: Giard, M.
name: Gilles, V.
name: Giraud-Heraud, Y.
name: Berisso, M. Gómez
name: González, M.
name: Gradziel, M.
name: Hampel, M. R.
name: Harari, D.
name: Henrot-Versillé, S.
name: Jules, E.
name: Kaplan, J.
name: Kristukat, C.
name: Lamagna, L.
name: Loucatos, S.
name: Louis, T.
name: Maffei, B.
name: Marty, W.
name: Mattei, A.
name: May, A.
name: McCulloch, M.
name: Mele, L.
name: Melo, D.
name: Montier, L.
name: Mundo, L. M.
name: Murphy, J. A.
name: Murphy, J. D.
name: Nati, F.
name: Olivieri, E.
name: Oriol, C.
name: Paiella, A.
name: Pajot, F.
name: Passerini, A.
name: Pastoriza, H.
name: Pelosi, A.
name: Perbost, C.
name: Perciballi, M.
name: Pezzotta, F.
name: Piacentini, F.
name: Piccirillo, L.
name: Pisano, G.
name: Platino, M.
name: Polenta, G.
name: Prêle, D.
name: Puddu, R.
name: Rambaud, D.
name: Rasztocky, E.
name: Ringegni, P.
name: Romero, G. E.
name: Salum, J. M.
name: Schillaci, A.
name: Scully, S.
name: Spinelli, S.
name: Stankowiak, G.
name: Supanitsky, A. D.
name: Timbie, P.
name: Tomasi, M.
name: Tucker, G.
name: Tucker, C.
name: Viganò, D.
name: Vittorio, N.
name: Wicek, F.
name: Wright, M.
name: Zullo, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: Bolometric interferometry is a novel technique that has the ability to perform spectral imaging. A bolometric interferometer observes the sky in a wide frequency band and can reconstruct sky maps in several sub-bands within the physical band in post-processing of the data. This provides a powerful spectral method to discriminate between the cosmic microwave background (CMB) and astrophysical foregrounds. In this paper, the methodology is illustrated with examples based on the Q \&amp; U Bolometric Interferometer for Cosmology (QUBIC) which is a ground-based instrument designed to measure the B-mode polarization of the sky at millimeter wavelengths. We consider the specific cases of point source reconstruction and Galactic dust mapping and we characterize the point spread function as a function of frequency. We study the noise properties of spectral imaging, especially the correlations between sub-bands, using end-to-end simulations together with a fast noise simulator. We conclude showing that spectral imaging performance are nearly optimal up to five sub-bands in the case of QUBIC.
description: 27 pages, 18 figures. Accepted by JCAP on July 6, 2021. Second paper of series of 8 in a special JCAP edition on QUBIC