Review of radio frequency interference and potential impacts on the CMB-S4 cosmic microwave background survey
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Le résumé fourni par la source
CMB-S4 will map the cosmic microwave background to unprecedented precision, while simultaneously surveying the millimeter-wave time-domain sky, in order to advance our understanding of cosmology and the universe. CMB-S4 will observe from two sites, the South Pole and the Atacama Desert of Chile. A combination of small- and large-aperture telescopes with hundreds of thousands of polarization-sensitive detectors will observe in several frequency bands from 20–300 GHz, surveying more than 50% of the sky to arcminute resolution with unprecedented sensitivity. CMB-S4 seeks to make a dramatic leap in sensitivity while observing across a broad range of largely unprotected spectrum which is increasingly being utilized for terrestrial and satellite transmissions. Fundamental aspects of CMB instrument technology leave them vulnerable to radio frequency interference (RFI) across a wide range of frequencies, including frequencies outside of their observing bands. Ground-based CMB instruments achieve their extraordinary sensitivities by deploying large focal planes of superconducting bolometers to extremely dry, high-altitude sites, with large fractional bandwidths, wide fields of view, and years of integration time. Suitable observing sites have historically offered significant protection from RFI, both naturally through their extremely remote locations as well as through restrictions on local emissions. Since the coupling mechanisms are complex, “safe” levels or frequencies of emission that would not interfere with CMB measurements cannot always be determined through straightforward calculations. We discuss models of interference for various types of RFI relevant to CMB-S4, mitigation strategies, and the potential impacts on survey sensitivity.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Review of radio frequency interference and potential impacts on the CMB-S4 cosmic microwave background survey
- Date Crossref
- 31/08/2022
- Éditeur
- SPIE
- Type
- proceedings-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Argonne National Laboratory pays non établi dans la noticeStructure de recherche
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University of Chicago pays non établi dans la noticeUniversité ou école supérieure
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K Lab (United States) pays non établi dans la noticeEntreprise
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University of California pays non établi dans la noticeUniversité ou école supérieure
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Center for Astrophysics Harvard & Smithsonian pays non établi dans la noticeUniversité ou école supérieure
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Jet Propulsion Laboratory pays non établi dans la noticeStructure de recherche
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Michigan State University pays non établi dans la noticeUniversité ou école supérieure
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Argonne National Lab. (United States) pays non établi dans la noticeInstitution
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Univ. of Chicago (United States) pays non établi dans la noticeInstitution
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CNRS-UCB International Research Lab. (United States) pays non établi dans la noticeStructure de recherche
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Univ. of California pays non établi dans la noticeInstitution
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Harvard-Smithsonian Ctr. for Astrophysics (United States) pays non établi dans la noticeInstitution
Argonne National Laboratory, University of Chicago et K Lab (United States), avec 9 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.