期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 403, 期 1, 页码 2-8出版社
WILEY-BLACKWELL PUBLISHING, INC
DOI: 10.1111/j.1365-2966.2009.15732.x
关键词
cosmic microwave background; large-scale structure of Universe
资金
- STFC Postdoctoral Fellowship
- DOE OJI [DE-FG02-95ER40899]
- NSF [AST-0807564]
- Direct For Mathematical & Physical Scien [0807564] Funding Source: National Science Foundation
- Division Of Astronomical Sciences [0807564] Funding Source: National Science Foundation
We revisit recent claims that there is a 'cold spot' in both number counts and brightness of radio sources in the NRAO (National Radio Astronomy Observatory) VLA (Very Large Array) Sky Survey (NVSS), with location coincident with the previously detected cold spot in Wilkinson Microwave Anisotropy Probe. Such matching cold spots would be difficult if not impossible to explain in the standard Lambda cold dark matter cosmological model. Contrary to the claim, we find no significant evidence for the radio cold spot, after including systematic effects in NVSS, and carefully accounting for the effect of a posteriori choices when assessing statistical significance.
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