Making cosmic microwave background temperature and polarization maps with MADAM
Making cosmic microwave background temperature and polarization maps with MADAM
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与 MADAM 一起制作宇宙微波背景温度和偏振图
DOI：
10.1051/0004-6361/200912813
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发表时间：
2009
影响因子：
6.5
通讯作者：
Anna
中科院分区：
文献类型：
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作者：
E. Keihänen;R. Keskitalo;H. Kurki;T. Poutanen;Anna
MADAM是一个CMB绘图代码，旨在为普朗克等总功率实验的时序数据绘制温度和偏振图。该算法是基于去噪技术，但它也利用已知的噪声属性的形式的噪声先验。该方法的早期形式在Keihanen等人的早期工作中提出（2005，MNRAS，360，390）。在本文中，我们提出了一个更新的方法，扩展到非平均数据，并包括极化。在该方法中，基线长度是一个可自由调节的参数，并且可以在与最终地图不同的地图分辨率下执行条带化。我们展示了模拟数据得到的结果。本研究与普朗克LFI活动有关。
MADAM is a CMB map-making code, designed to make temperature and polarization maps of time-ordered data of total power experiments like Planck. The algorithm is based on the destriping technique, but it also makes use of known noise properties in the form of a noise prior. The method in its early form was presented in an earlier work by Keihanen et al. (2005, MNRAS, 360, 390). In this paper we present an update of the method, extended to non-averaged data, and include polarization. In this method the baseline length is a freely adjustable parameter, and destriping can be performed at a different map resolution than that of the final maps. We show results obtained with simulated data. This study is related to Planck LFI activities.