Is the pre-WMAP CMB data self-consistent?

Charles H. Lineweaver*, Louise M. Griffiths

*Corresponding author for this work

Research output: Contribution to journalShort surveypeer-review


Although individual observational groups vigorously test their datasets for systematic errors, the pre-WMAP CMB observational dataset has not yet been collectively tested. Under the assumption that the concordance model is the correct model, we have explored residuals of the observational data with respect to this model to see if any patterns emerge that can be identified with systematic errors. We found no significant trends associated with frequency, frequency channels, calibration source, pointing uncertainty, instrument type, platform and altitude. We did find some evidence at the ∼1 to ∼2σ level for trends associated with angular scale (ℓ range) and absolute galactic latitude. The slope of the trend in galactic latitude is consistent with low level galactic contamination. The residuals with respect to ℓ may indicate that the concordance model used here needs slight modification. See Griffiths and Lineweaver (astro-ph/0301490) for more detail.

Original languageEnglish
Pages (from-to)901-905
Number of pages5
JournalNew Astronomy Reviews
Issue number11-12
Publication statusPublished - Dec 2003
Externally publishedYes


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