The Simons Observatory: a new open-source power spectrum pipeline applied to the Planck legacy data
The Simons Observatory: a new open-source power spectrum pipeline applied to the Planck legacy data
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DOI：
10.1088/1475-7516/2023/09/048
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发表时间：
2021-12
影响因子：
6.4
通讯作者：
Zack Li;T. Louis;E. Calabrese;H. Jense;D. Alonso;Zachary R. Atkins;J. Bond;Steve K. Choi;J. Dunkley;G. Fabbian;X. Garrido;Andrew H. Jaffe;M. Madhavacheril;P. Meerburg;U. Natale;F. J. Qu
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文献类型：
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作者：
Zack Li;T. Louis;E. Calabrese;H. Jense;D. Alonso;Zachary R. Atkins;J. Bond;Steve K. Choi;J. Dunkley;G. Fabbian;X. Garrido;Andrew H. Jaffe;M. Madhavacheril;P. Meerburg;U. Natale;F. J. Qu
我们再现了Planck 2018在_bb_30的角功率谱，以及100,143和217ghz的强度和极化图的相关协方差矩阵。这使用了一个新的、公开可用的管道，它是PSpipe包的一部分。作为测试用例，我们使用与普朗克2018分析相同的输入图、辅助产品和分析选择，并发现我们可以将光谱重现到0.1σ精度，协方差矩阵达到10%。我们表明，从我们的重新推导的产品估计的宇宙学参数与公共普朗克产品一致，为0.1σ提供了对普朗克团队分析的独立交叉检查。展望未来，公开可用的代码可以很容易地适应使用替代输入地图，数据选择和分析选择，以便将来使用新的地面宇宙微波背景数据对普朗克数据进行优化分析。
We present a reproduction of the Planck 2018 angular power spectra at ℓ > 30, and associated covariance matrices, for intensity and polarization maps at 100, 143 and 217 GHz. This uses a new, publicly available, pipeline that is part of the PSpipe package. As a test case we use the same input maps, ancillary products, and analysis choices as in the Planck 2018 analysis, and find that we can reproduce the spectra to 0.1σ precision, and the covariance matrices to 10%. We show that cosmological parameters estimated from our re-derived products agree with the public Planck products to 0.1σ, providing an independent cross-check of the Planck team's analysis. Going forward, the publicly-available code can be easily adapted to use alternative input maps, data selections and analysis choices, for future optimal analysis of Planck data with new ground-based Cosmic Microwave Background data.