Systematical effects in WMAP data
نویسنده
چکیده
Previously, by re-analyzing the Wilkinson Microwave Anisotropy Probe (WMAP) raw data, we have seen significantly different cosmic microwave background (CMB) results to the WMAP official release, especially at the largest-scale structure detectable for the CMB anisotropy the l = 2 component, which is also called the CMB quadrupole. In this article, we first introduce the discovered differences, and then explain why the WMAP official release should be questioned. Since the differences are caused by complex systematical effects, we also manage to organize the involved systematical effects to show their inter relations, so that we can see clearly what we are doing in each work, and what we need to do in future works. Subject headings: cosmic microwave background – cosmology: observations – methods: data analysis
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