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- W1729650627 abstract "The largest uncollapsed inhomogeneity in the observable Universe is statistically represented in the quadrupole signal of the cosmic microwave background (CMB) sky maps as observed by the Wilkinson Microwave Anisotropy Probe (WMAP). The constant temporal offset of -25.6 ms between the timestamps of the spacecraft attitude and observational data records in the time-ordered data (TOD) of the WMAP observations was suspected to imply that previously derived all-sky CMB maps are erroneous, and that the quadrupole is in large part an artefact. The optimal focussing of bright objects in the Galactic Plane plays a key role in showing that no error occurred at the step of mapmaking from the calibrated TOD. Instead, the error had an effect when the uncalibrated TOD were calibrated. Estimates of the high-latitude quadrupole based on the wrongly calibrated WMAP maps are overestimated by about 15-60%." @default.
- W1729650627 created "2016-06-24" @default.
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- W1729650627 date "2010-08-06" @default.
- W1729650627 modified "2023-09-27" @default.
- W1729650627 title "Galactic Plane image sharpness as a check on cosmic microwave background mapmaking" @default.
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