Instrumental and analytic methods for bolometric polarimetry

Instrumental and analytic methods for bolometric polarimetry
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辐射热偏振测量的仪器和分析方法

DOI:
10.1051/0004-6361:20065911
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发表时间:
2007
影响因子:
6.5
通讯作者:
Jones W
Jones W
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Jones W

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目的讨论了第一代宇宙微波背景辐射计的仪器和分析方法。详细描述了极化敏感测热计(psb)数据的设计、表征和分析。然后简要研究了各种偏振调制技术对从扫描偏振计数据中恢复天空偏振的影响。方法继在亚轨道回旋镖实验中成功实施后,psb目前在两个地面CMB偏振实验(QUaD和罗宾逊望远镜)中运行。我们研究了两种分析这些实验数据的方法,使用时间顺序数据的真实模拟来说明仪器效应对恢复极化信号保真度的影响。结果我们发现差分时间流的分析充分利用了PSB设计提供的高度共模抑制。除了目前正在进行的观测工作外,本讨论直接适用于构成planckhfi仪器极化能力的psb。
AimsWe discuss instrumental and analytic methods that have been developed for the first generation of bolometric cosmic microwave background (CMB) polarimeters. The design, characterization, and analysis of data obtained using Polarization Sensitive Bolometers (PSBs) are described in detail. This is followed by a brief study of the effect of various polarization modulation techniques on the recovery of sky polarization from scanning polarimeter data.MethodsHaving been successfully implemented on the sub-orbital BOOMERANG experiment, PSBs are currently operational in two terrestrial CMB polarization experiments (QUaD and theRobinsonTelescope). We investigate two approaches to the analysis of data from these experiments, using realistic simulations of time ordered data to illustrate the impact of instrumental effects on the fidelity of the recovered polarization signal.ResultsWe find that the analysis of difference time streams takes full advantage of the high degree of common mode rejection afforded by the PSB design. In addition to the observational efforts currently underway, this discussion is directly applicable to the PSBs that constitute the polarized capability of thePlanckHFI instrument.
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DOI: --
发表时间: 1998
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