English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present results from a first test of the Gaussianity of degree-scalecosmic microwave background (CMB) anisotropy. We investigate Gaussianity of theCMB anisotropy by studying the topology of CMB anisotropy maps from the QMAPand Saskatoon experiments. We also study the QMASK map, a combination map ofthe QMAP and Saskatoon data. We measure the genus from noise-suppressedWiener-filtered maps at an angular scale of about 1.5 degrees. To test theGaussianity of the observed anisotropy, we compare these results to thosederived from a collection of simulated maps for each experiment in a Gaussianspatially-flat cosmological constant dominated cold dark matter model. Thegenus-threshold level relations of the QMAP and Saskatoon maps are consistentwith Gaussianity. While the combination QMASK map has a mildly non-Gaussiangenus curve which is not a consequence of known foreground contamination, thisresult is not statistically significant at the 2 sigma level. These resultsextend previous upper limits on the non-Gaussianity of the large angular scale(> 10 degrees) CMB anisotropy (measured by the COBE DMR experiment) down todegree angular scales.Comment: 15 pages, 4 figures, Submitted to Ap

Gaussianity of Degree‐Scale Cosmic Microwave Background Anisotropy Observations