Precision Foreground Removal in Cosmic Microwave Background Polarization Maps

Metadata Updated: May 2, 2019

The most promising method for detecting primordial gravitational waves lies in the B-mode polarization of the cosmic microwave background, or CMB. A measurement of these B-modes would reveal the first evidence for quantum gravity and determine the energy scale of inflation. However, polarized foreground emission from synchrotron radiation and dust in our galaxy's magnetic field are sources of significant contamination for CMB B-mode polarization maps. I propose to develop high-precision photometric calibration technology in order to make the highest possible quality foreground-cleaned polarization maps of the CMB. I will build and characterize a precision Fourier Transform Spectrometer (FTS) with a novel optical coupling scheme that will enable on-site measurements of Advanced ACTPol's detectors' spectral responses. I will develop new anti-reflection coating technology for optical systems to ensure precise calibration. With my calibration in hand, I will then produce foreground-separated polarization maps which will be used to place constraints on inflation, neutrinos and dark energy. The technology I develop will be applicable to all suborbital and space-based CMB, millimeter wave, and submillimeter wave experiments. My work aligns with NASA's goals outlined in the Science Instruments, Observatories, and Sensor Systems Roadmap (TA08.1.4 and TA08.2.2), Materials, Structures, Mechanical Systems, and Manufacturing Roadmap (TA12.1.4), Physics of the Cosmos Program, and Cosmic Origins Program.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_88554
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Datagov Dedupe Retained 20190501230127
Harvest Object Id 955a2a01-75e6-44cf-aec8-8f39f8f2c92b
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2020-08-01
Homepage URL
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash 515b4d2ae1e3a2ae5710ae62ccd8dd1afde43e09
Source Schema Version 1.1

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