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 & 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.

Mousset, L., Gamboa Lerena, M., Battistelli, E., de Bernardis, P., Chanial, P., D'Alessandro, G., et al. (2022). QUBIC II: Spectral polarimetry with bolometric interferometry. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2022(04) [10.1088/1475-7516/2022/04/035].

QUBIC II: Spectral polarimetry with bolometric interferometry

Zannoni, M.;Banfi, S.;Gervasi, M.;Nati, F.;Passerini, A.;
2022

Abstract

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 & 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.
Articolo in rivista - Articolo scientifico
Scientifica
CMBR experiments; CMBR theory; cosmological parameters from CMBR; gravitational waves and CMBR polarization;
English
Mousset, L., Gamboa Lerena, M., Battistelli, E., de Bernardis, P., Chanial, P., D'Alessandro, G., et al. (2022). QUBIC II: Spectral polarimetry with bolometric interferometry. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2022(04) [10.1088/1475-7516/2022/04/035].
Mousset, L; Gamboa Lerena, M; Battistelli, E; de Bernardis, P; Chanial, P; D'Alessandro, G; Dashyan, G; De Petris, M; Grandsire, L; Hamilton, J; Incardona, F; Landau, S; Marnieros, S; Masi, S; Mennella, A; O'Sullivan, C; Piat, M; Ricciardi, G; Scóccola, C; Stolpovskiy, M; Tartari, A; Thermeau, J; Torchinsky, S; Voisin, F; Zannoni, M; Ade, P; Alberro, J; Almela, A; Amico, G; Arnaldi, L; Auguste, D; Aumont, J; Azzoni, S; Banfi, S; Baù, A; Bélier, B; Bennett, D; Bergé, L; Bernard, J; Bersanelli, M; Bigot-Sazy, M; Bonaparte, J; Bonis, J; Bunn, E; Burke, D; Buzi, D; Cavaliere, F; Chapron, C; Charlassier, R; Cobos Cerutti, A; Columbro, F; Coppolecchia, A; De Gasperis, G; De Leo, M; Dheilly, S; Duca, C; Dumoulin, L; Etchegoyen, A; Fasciszewski, A; Ferreyro, L; Fracchia, D; Franceschet, C; Ganga, K; García, B; García Redondo, M; Gaspard, M; Gayer, D; Gervasi, M; Giard, M; Gilles, V; Giraud-Heraud, Y; Gómez Berisso, M; González, M; Gradziel, M; Hampel, M; Harari, D; Henrot-Versillé, S; Jules, E; Kaplan, J; Kristukat, C; Lamagna, L; Loucatos, S; Louis, T; Maffei, B; Mandelli, S; Marty, W; Mattei, A; May, A; Mcculloch, M; Mele, L; Melo, D; Montier, L; Mundo, L; Murphy, J; Murphy, J; Nati, F; Olivieri, E; Oriol, C; Paiella, A; Pajot, F; Passerini, A; Pastoriza, H; Pelosi, A; Perbost, C; Perciballi, M; Pezzotta, F; Piacentini, F; Piccirillo, L; Pisano, G; Platino, M; Polenta, G; Prêle, D; Puddu, R; Rambaud, D; Rasztocky, E; Ringegni, P; Romero, G; Salum, J; Schillaci, A; Scully, S; Spinelli, S; Stankowiak, G; Supanitsky, A; Timbie, P; Tomasi, M; Tucker, C; Tucker, G; Viganò, D; Vittorio, N; Wicek, F; Wright, M; Zullo, A
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10281/369885
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