Diagnosing timing error in WMAP data

@article{Liu2010DiagnosingTE,
  title={Diagnosing timing error in WMAP data},
  author={Hao Liu and Shaolin Xiong and Tipei Li},
  journal={Monthly Notices of the Royal Astronomical Society: Letters},
  year={2010},
  volume={413}
}
  • Hao Liu, S. Xiong, Tipei Li
  • Published 14 September 2010
  • Geology
  • Monthly Notices of the Royal Astronomical Society: Letters
The Doppler dipole signal dominates the cosmic microwave background (CMB) anisotropy maps obtained by the Wilkinson Microwave Anisotropy Probe (WMAP) mission, and plays a key role throughout the data processing. Previously, we discovered a timing asynchronism of -25.6 ms between the timestamps of the spacecraft attitude and radiometer output in the original raw WMAP time-ordered data (TOD), which, if not corrected during data processing, would generate an artificial quadrupole component (l = 2… 

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References

SHOWING 1-10 OF 17 REFERENCES
On the suspected timing-offset-induced calibration error in the Wilkinson microwave anisotropy probe time-ordered data
In the time-ordered data (TOD) files of the WMAP CMB observations, there is an undocumented timing offset of -25.6 ms between the spacecraft attitude and radio flux density timestamps. If the offset
The origin of the WMAP quadrupole
The cosmic microwave background (CMB) temperature maps from the Wilkinson Microwave Anisotropy Probe (WMAP) are of great importance for cosmology. In previous work we had developed a pipeline for
Observational Scan Induced Artificial CMB Anisotropy
To reliably detect the cosmic microwave background (CMB) anisotropy is of great importance in understanding the birth and evolution of the Universe. One of the difficulties in CMB experiments is the
Improved CMB Map from WMAP Data
The cosmic microwave background (CMB) temperature maps published by the Wilkinson Microwave Anisotropy Probe (WMAP) team are found to be inconsistent with the differential time-ordered data (TOD),
First year Wilkinson Microwave Anisotropy Probe (WMAP) observations: Preliminary maps and basic results
We present full-sky microwave maps in five frequency bands (23-94 GHz) from the Wilkinson Microwave Anisotropy Probe (WMAP) first-year sky survey. Calibration errors are less than 0.5%, and the low
SEVEN-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE (WMAP) OBSERVATIONS: GALACTIC FOREGROUND EMISSION
We present updated estimates of Galactic foreground emission using seven years of WMAP data. Using the power spectrum of differences between multi-frequency template-cleaned maps, we find no evidence
Induced CMB quadrupole from pointing offsets
Recent claims in the literature have suggested that the WMAP quadrupole is not primordial in origin, and arises from an aliasing of the much larger dipole field because of incorrect satellite
Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Data Processing, Sky Maps, & Basic Results
We present new full-sky temperature and polarization maps in five frequency bands from 23 to 94 GHz, based on data from the first five years of the WMAP sky survey. The new maps are consistent with
Systematic distortion in cosmic microwave background maps
To minimize instrumentally the induced systematic errors, cosmic microwave background (CMB) anisotropy experiments measure temperature differences across the sky using pairs of horn antennas,
On the suspected timing error in Wilkinson microwave anisotropy probe map-making
Context. It has recently been suggested that the compilation of the calibrated time-ordered-data (TOD) of the Wilkinson Microwave Anisotropy Probe (WMAP) observations of the cosmic microwave
...
...