正交BipoSH测度:各向同性破坏源的研究
Orthogonal BipoSH measures : Scrutinizing sources of isotropy violation
摘要:
CMB温度各向异性的两点关联函数通常被假定为统计各向同性(SI)。与这一假设的偏差可以追溯到物理或观测人为因素和系统效应。测量BipoSH光谱中的非零功率是搜索各向同性违反的标准统计技术。虽然这是一个整洁的工具,允许在CMB天空中的SI违反盲目搜索,它是不容易辨别的各向同性违反使用此措施的原因。在这篇文章中,我们提出了一种新的技术,构建正交的BipoSH估计,它可以用来辨别模型的各向同性违反。
英文摘要:
The two point correlation function of the CMB temperature anisotropies is generally assumed to be statistically isotropic (SI). Deviations from this assumption could be traced to physical or observational artefacts and systematic effects. Measurement of non-vanishing power in the BipoSH spectra is a standard statistical technique to search for isotropy violations. Although this is a neat tool allowing a blind search for SI violations in the CMB sky, it is not easy to discern the cause of isotropy violation using this measure. In this article, we propose a novel technique of constructing orthogonal BipoSH estimators, which can be used to discern between models of isotropy violation.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。