Three-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Beam Profiles, Data Processing, Radiometer Characterization, and Systematic Error Limits

By N. Jarosik, C. Barnès, M. Greason, R. Hill, M. Nolta, N. Odegard, J. Weiland, R. Bean, C. Bennett, O. Dor'e and 11 more. 2006

184 citations recorded by the source corpus.

The WMAP satellite has completed 3 years of observations of the cosmic microwave background radiation. The 3 year data products include several sets of full sky maps of the Stokes I, Q, and U parameters in five frequency bands, spanning 23-94 GHz, and supporting items such as beam window functions and noise covariance matrices. The processing used to produce the current sky maps and supporting products represents a significant advancement over the first-year analysis and is described herein. Improvements to the pointing reconstruction, radiometer gain modeling, window function determination, and radiometer spectral noise parameterization are presented. A detailed description of the updated data processing that produces maximum likelihood sky map estimates is presented, along with the methods used to produce reduced resolution maps and corresponding noise covariance matrices. Finally, two methods used to evaluate the noise of the full resolution sky maps are presented along with several representative year-to-year null tests, demonstrating that sky maps produced from data from different observational epochs are consistent.

Subfields: Astronomy and Astrophysics, Environmental Engineering

View Paper: https://www.semanticscholar.org/paper/4c1e38687ac667d57fe4763e9bf91f9a6eed57c9

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In Astronomy and Astrophysics

Citations in the corpus

Three-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Implications for Cosmology (2006, unknown): “With 3 years of integration, improved beam models, better understanding of systematic errors (Jarosik et al. 2007), temperature data (Hinshaw et al. 2007), and polarization data (Page et al. 2007), the WMAP data have significantly improved.”
SEVEN-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE (WMAP) OBSERVATIONS: PLANETS AND CELESTIAL CALIBRATION SOURCES (2010, background): “For a more complete description of the relevant equations, see Hinshaw et al. (2003) and Jarosik et al. (2007).”
SEVEN-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE (WMAP ) OBSERVATIONS: ARE THERE COSMIC MICROWAVE BACKGROUND ANOMALIES? (2010, background): “Freeman et al. (2006) directly verified the fidelity of the WMAP team’s map-making process (Hinshaw et al. 2003; Jarosik et al. 2007, 2010).”
NINE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE (WMAP) OBSERVATIONS: FINAL MAPS AND RESULTS (2012, methodology): “The beam profile analysis, data processing changes, radiometer characterization, and systematic error limits were presented in Jarosik et al. (2007).”
SEVEN-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE (WMAP) OBSERVATIONS: SKY MAPS, SYSTEMATIC ERRORS, AND BASIC RESULTS (2010, methodology): “See Jarosik et al. (2007) for a description of the implementation of the spurious mode, S. Multiplying a sky map vector by M effectively generates the time ordered data that would be obtained if WMAP observed a sky corresponding to the map vector.”
FIVE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE OBSERVATIONS: ANGULAR POWER SPECTRA (2008, background): “Due to its thermal stability (Jarosik et al. 2007) and well-characterized gain, WMAP can measure polarization signals even though the scan pattern was not optimized for doing so.”