21 cm Signal Recovery via Robust Principal Component Analysis

21 cm Signal Recovery via Robust Principal Component Analysis
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通过稳健主成分分析恢复 21 cm 信号

DOI:
10.3847/1538-3881/aaef3b
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发表时间:
2018-01
期刊:
The Astronomical Journal
影响因子:
--
通讯作者:
Youjun Lu
Youjun Lu
中科院分区:
其他
文献类型:
--
作者:
Shifan Zuo;Xuelei Chen;Reza Ansari;Youjun Lu

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来自中性氢(H i)的红移21 cm信号可能是一个非常强大的宇宙学探测器,但其观测的困难在于它比来自银河系以及河外射电源的前景辐射弱得多。
The redshifted 21 cm signal from neutral hydrogen (H i) is potentially a very powerful probe for cosmology, but a difficulty in its observation is that it is much weaker than foreground radiation from the Milky Way as well as extragalactic radio sources.
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