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  Astro2020 APC White Paper: The need for better tools to design future CMB experiments

Rocha, G., Banday, A. J., Barreiro, R. B., Challinor, A., Górski, K. M., Hensley, B., et al. (in preparation). Astro2020 APC White Paper: The need for better tools to design future CMB experiments.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-84B8-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-84BB-2
Genre: Paper

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1908.01907.pdf (Preprint), 851KB
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 Creators:
Rocha, G., Author
Banday, A. J., Author
Barreiro, R. Belen, Author
Challinor, A., Author
Górski, K. M., Author
Hensley, B., Author
Jaffe, T., Author
Jewell, J., Author
Keating, B., Author
Kogut, A., Author
Lawrence, C., Author
Panopoulou, G., Author
Partridge, B., Author
Pearson, T., Author
Silk, J., Author
Steinhardt, P., Author
Whehus, I., Author
Bock, J., Author
Crill, B., Author
Delabrouille, J., Author
Doré, O., AuthorFernandez-Cobos, R., AuthorIjjas, A.1, Author              Keskitalo, R., AuthorKritsuk, A., AuthorMangilli, A., AuthorMoncelsi, L., AuthorMyers, S., AuthorSteinbach, B., AuthorTristram, M., Author more..
Affiliations:
1Lise Meitner Excellence Group: Gravitational Theory and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_3235822              

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Free keywords: Astrophysics, Cosmology and Extragalactic Astrophysics, astro-ph.CO
 Abstract: This white paper addresses key challenges for the design of next-decade Cosmic Microwave Background (CMB) experiments, and for assessing their capability to extract cosmological information from CMB polarization. We focus here on the challenges posed by foreground emission, CMB lensing, and instrumental systematics to detect the signal that arises from gravitational waves sourced by inflation and parameterized by $r$, at the level of $r \sim 10^{-3}$ or lower, as proposed for future observational efforts. We argue that more accurate and robust analysis and simulation tools are required for these experiments to realize their promise. We are optimistic that the capability to simulate the joint impact of foregrounds, CMB lensing, and systematics can be developed to the level necessary to support the design of a space mission at $r \sim 10^{-4}$ in a few years. We make the case here for supporting such work. Although ground-based efforts present additional challenges (e.g., atmosphere, ground pickup), which are not addressed here, they would also benefit from these improved simulation capabilities.

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 Dates: 2019-08-05
 Publication Status: Not specified
 Pages: 10 pages + references, 4 figures; Submitted to the Astro2020 call for APC white papers
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1908.01907
URI: http://arxiv.org/abs/1908.01907
 Degree: -

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