2018
DOI: 10.1088/1475-7516/2018/04/023
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Exploring cosmic origins with CORE:B-mode component separation

Abstract: We demonstrate that, for the baseline design of the CORE satellite mission, the polarized foregrounds can be controlled at the level required to allow the detection of the primordial cosmic microwave background (CMB) B-mode polarization with the desired accuracy at both reionization and recombination scales, for tensor-to-scalar ratio values of r≳ 5× 10−3. We consider detailed sky simulations based on state-of-the-art CMB observations that consist of CMB polarization with τ=0.055 and tensor-to-s… Show more

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Cited by 72 publications
(70 citation statements)
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“…We also show the sensitivity that is expected to be reached by ABRACADABRA in configurations 1 and 2 (orange thick lines, see text), KLASH (within the red dashed lines), and ADMX (within the blue dot-dashed lines). CORE [179], and the Simons Observatory [180], the Palatini approach leads to a sensibly small value of the tensor-to-scalar ratio r ∼ 10 −12 which is not possible to be probed directly with any near future experiment. For this reason, the discovery of a light axion of mass m 0.1 µeV could provide evidence for the Palatini-Higgs inflation scenario, in which the scale of inflation and the associated value of the tensor-to-scalar ratio are sufficiently low as to satisfy the inequality in Eq.…”
Section: Connection To Observablesmentioning
confidence: 99%
“…We also show the sensitivity that is expected to be reached by ABRACADABRA in configurations 1 and 2 (orange thick lines, see text), KLASH (within the red dashed lines), and ADMX (within the blue dot-dashed lines). CORE [179], and the Simons Observatory [180], the Palatini approach leads to a sensibly small value of the tensor-to-scalar ratio r ∼ 10 −12 which is not possible to be probed directly with any near future experiment. For this reason, the discovery of a light axion of mass m 0.1 µeV could provide evidence for the Palatini-Higgs inflation scenario, in which the scale of inflation and the associated value of the tensor-to-scalar ratio are sufficiently low as to satisfy the inequality in Eq.…”
Section: Connection To Observablesmentioning
confidence: 99%
“…CORE observations would thereby eliminate the data deficiency on the small-scale dust polarization, allowing for a direct measurement of dust bias and, more practically, providing the high-frequency data needed for dust subtraction through component-separation techniques (see ref. [130] for a detailed analysis of component separation for CORE ).…”
Section: Jcap04(2018)018mentioning
confidence: 99%
“…With component separation techniques this will allow for the construction of foreground-subtracted maps [130] on which lensing reconstruction can be performed, mitigating the dust bias. Ongoing work aims to quantify the residual lensing bias after foreground cleaning, accounting for the CORE specification of frequency channels and map-level sensitivities.…”
Section: Jcap04(2018)018mentioning
confidence: 99%
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“…In the microwaves, KID technology has been already proven for ground-based experiments by NIKA [4] and NIKA2 [5]. OLIMPO [6] has qualified the KID technology in a representative near-space environment, relevant for TRL (Technology Readiness Level) advancement in view of future space missions [1,7,8,9,10,11,12,13,14,15]. In the past years, several efforts have been made to characterize KIDs in representative space conditions [16,17,18].…”
Section: Introductionmentioning
confidence: 99%