2022
DOI: 10.1088/1475-7516/2022/04/035
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QUBIC II: Spectral polarimetry with bolometric interferometry

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 Interferomete… Show more

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Cited by 12 publications
(40 citation statements)
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“…QUBIC, as a bolometric inteferometer, can reach the same sensitivity as imagers with the same number of detectors, but it is in addition capable of control and correct systematic effects via the so called self-calibration procedure [3,4]. As every ground-based experiment, QUBIC can perform sky observations only at few frequency bands because of the Earth's atmosphere, but can mitigate this problem by separating the CMB signal from polarized foregrounds via its spectral-imaging capabilities [5,6]. Such unique features of the QUBIC instrument allow to extrapolate the signal at frequency sub-bands within the main channels, with a spectral resolution of Δ𝜈/𝜈 ∼ 0.05 [5], helping to separate the cosmological signal from galactic foregrounds.…”
Section: Introductionmentioning
confidence: 99%
“…QUBIC, as a bolometric inteferometer, can reach the same sensitivity as imagers with the same number of detectors, but it is in addition capable of control and correct systematic effects via the so called self-calibration procedure [3,4]. As every ground-based experiment, QUBIC can perform sky observations only at few frequency bands because of the Earth's atmosphere, but can mitigate this problem by separating the CMB signal from polarized foregrounds via its spectral-imaging capabilities [5,6]. Such unique features of the QUBIC instrument allow to extrapolate the signal at frequency sub-bands within the main channels, with a spectral resolution of Δ𝜈/𝜈 ∼ 0.05 [5], helping to separate the cosmological signal from galactic foregrounds.…”
Section: Introductionmentioning
confidence: 99%
“…Tuve la suerte de coincidir con la etapa en la que el demostrador tecnológico de QUBIC comenzó su calibración en el laboratorio APC de París y luego en Argentina, lo cual me permitió trabajar con datos reales. El trabajo presentado en esta Tesis fue realizado en estrecha colaboración con Louise Mousset, y publicado en "QUBIC II: Spectral polarimetry with bolometric interferometer" [1]. Además participé de simulaciones y discusiones volcadas en los artículos "QUBIC I: Overview and science program" [2] y "QUBIC III: Laboratory characterization" [3].…”
Section: Prefaciounclassified
“…En los últimos años ha crecido considerablemente la cantidad de datos para analizar a partir del avance tecnológico y el desarrollo de nuevas técnicas de observación. En esta sección resumimos el marco teórico y cosmológico del modelo estándar incluyendo la inflación, la evolución de las 1 Actualmente dicha ley se la denomina como Ley de Hubble-Lemaître, nombre adoptado por la Asamblea de la UAI en 2018 (https://www.iau.org/static/resolutions/IAU2018_ResolB4_English.pdf) 2 El primer cálculo del fondo de radiación lo realizaron en 1948 Ralph Alpher y Robert Hernan en [14]. 3 Ver la colección especial de la Universidad de Cambriedge: https://www.joh.cam.ac.uk/library/special_ collections/hoyle/exhibition/radio/ perturbaciones primordiales, la formación de la superficie de última dispersión y cómo son afectados los fotones desde que comienzan a viajar libremente por el espacio hasta que llegan a nuestros ojos.…”
Section: El Modelo De Big Bangunclassified
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