Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-04-26
Phys.Rev.D65:083002,2002
Astronomy and Astrophysics
Astrophysics
Revised to match accepted PRD version. Substantially expanded. Window functions, map and covariance matrix at http://www.hep
Scientific paper
10.1103/PhysRevD.65.083002
We measure the cosmic microwave background (CMB) power spectrum on angular scales l~30-200 (1-6 degrees) from the QMASK map, which combines the data from the QMAP and Saskatoon experiments. Since the accuracy of recent measurements leftward of the first acoustic peak is limited by sample-variance, the large area of the QMASK map (648 square degrees) allows us to place among the sharpest constraints to date in this range, in good agreement with BOOMERanG and (on the largest scales) COBE/DMR. By band-pass-filtering the QMAP and Saskatoon maps, we are able to spatially compare them scale-by-scale to check for beam- and pointing-related systematic errors.
de Oliveira-Costa Angélica
Tegmark Max
Xu Yongzhong
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