Mousset, L. and Gamboa Lerena, M.M. and Battistelli, E.S. and de Bernardis, P. and Chanial, P. and D'Alessandro, G. and Dashyan, G. and De Petris, M. and Grandsire, L. and Hamilton, J.-Ch. and Incardona, F. and Landau, S. and Marnieros, S. and Masi, S. and Mennella, A. and O'Sullivan, Créidhe and Piat, M. and Ricciardi, G. and Scóccola, C.G. and Stolpovskiy, M. and Tartari, A. and Thermeau, J.-P. and Torchinsky, S.A. and Voisin, F. and Zannoni, M. and Ade, P. and Alberro, J.G. and Almela, A. and Amico, G. and Arnaldi, L.H. and Auguste, D. and Aumont, J. and Azzoni, S. and Banfi, S. and Baù, A. and Bélier, B. and Bennett, D. and Bergé, L. and Bernard, J.-Ph. and Bersanelli, M. and Bigot-Sazy, M.-A. and Bonaparte, J. and Bonis, J. and Bunn, E. and Burke, D. and Buzi, D. and Cavaliere, F. and Chapron, C. and Charlassier, R. and Cobos Cerutti, A.C. and Columbro, F. and Coppolecchia, A. and De Gasperis, G. and De Leo, M. and Dheilly, S. and Duca, C. and Dumoulin, L. and Etchegoyen, A. and Fasciszewski, A. and Ferreyro, L.P. and Fracchia, D. and Franceschet, C. and Ganga, K.M. and García, B. and García Redondo, M.E. and Gaspard, M. and Gayer, D. and Gervasi, M. and Giard, M. and Gilles, V. and Giraud-Heraud, Y. and Gómez Berisso, M. and González, M. and Gradziel, M. and Hampel, M.R. and Harari, D. and Henrot-Versillé, S. and Jules, E. and Kaplan, J. and Kristukat, C. and Lamagna, L. and Loucatos, S. and Louis, T. and Maffei, B. and Mandelli, S. and Marty, W. and Mattei, A. and May, A. and McCulloch, M. and Mele, L. and Melo, D. and Montier, L. and Mundo, L.M. and Murphy, J.A. and Murphy, J.D. and Nati, F. and Olivieri, E. and Oriol, C. and Paiella, A. and Pajot, F. and Passerini, A. and Pastoriza, H. and Pelosi, A. and Perbost, C. and Perciballi, M. and Pezzotta, F. and Piacentini, F. and Piccirillo, L. and Pisano, G. and Platino, M. and Polenta, G. and Prêle, D. and Puddu, R. and Rambaud, D. and Rasztocky, E. and Ringegni, P. and Romero, G.E. and Salum, J.M. and Schillaci, A. and Scully, S. and Spinelli, S. and Stankowiak, G. and Supanitsky, A.D. and Timbie, P. and Tomasi, M. and Tucker, C. and Tucker, G. and Viganò, D. and Vittorio, N. and Wicek, F. and Wright, M. and Zullo, A. (2022) QUBIC II: Spectral polarimetry with bolometric interferometry. Journal of Cosmology and Astroparticle Physics, 035. pp. 1-31. ISSN 1475-7516

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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.

Item Type:	Article
Keywords:	CMBR experiments; CMBR theory; cosmological parameters; CMBR; gravitational waves; CMBR polarization;
Academic Unit:	Faculty of Science and Engineering > Experimental Physics
Item ID:	17823
Identification Number:	https://doi.org/10.1088/1475-7516/2022/04/035
Depositing User:	Dr. Créidhe O'Sullivan
Date Deposited:	14 Nov 2023 11:35
Journal or Publication Title:	Journal of Cosmology and Astroparticle Physics
Publisher:	IOP Publishing
Refereed:	Yes
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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