Astro2020 APC White Paper: The need for better tools to design future CMB experiments
Creators
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Rocha, Graça
- Banday, A. J.
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Barreiro, R.
- Challinor, A.
- Górski, K. M.
- Hensley, B.
- Jaffe, T.
- Jewell, J.
- Keating, B.
- Kogut, A.
- Lawrence, C.
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Panopoulou, Georgia
- Partridge, B.
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Pearson, Tim
- Silk, J.
- Steinhardt, P.
- Whehus, I.
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Bock, Jamie
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Crill, Brendan
- Delabrouille, J.
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Doré, Olivier
- Fernandez-Cobos, R.
- Ijjas, A.
- Keskitalo, R.
- Kritsuk, A.
- Mangilli, A.
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Moncelsi, Lorenzo
- Myers, S.
- Steinbach, Bryan
- Tristram, M.
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∼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∼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.
Additional Information
The research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.Attached Files
Submitted - 1908.01907.pdf
Files
1908.01907.pdf
Files
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Additional details
Identifiers
- Eprint ID
- 98841
- Resolver ID
- CaltechAUTHORS:20190925-085849774
Related works
- Describes
- http://arxiv.org/abs/1908.01907 (URL)
Funding
- NASA/JPL/Caltech
Dates
- Created
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2019-09-25Created from EPrint's datestamp field
- Updated
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2023-06-02Created from EPrint's last_modified field
Caltech Custom Metadata
- Caltech groups
- Astronomy Department
- Series Name
- Astro2020 Science White Paper