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arXiv 1909.13832astro-ph.COastro-ph.IMgr-qc
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利用POLARBEAR实验研究宇宙微波背景偏振B模的内部去透镜

Internal delensing of Cosmic Microwave Background polarization B-modes with the POLARBEAR experiment

S. Adachi, M. A. O. Aguilar Faúndez, Y. Akiba, A. Ali, K. Arnold, C. Baccigalupi, D. Barron, D. Beck, F. Bianchini, J. Borrill, J. Carron, K. Cheung, Y. Chinone… 展开作者

S. Adachi, M. A. O. Aguilar Faúndez, Y. Akiba, A. Ali, K. Arnold, C. Baccigalupi, D. Barron, D. Beck, F. Bianchini, J. Borrill, J. Carron, K. Cheung, Y. Chinone, K. Crowley, H. El Bouhargani, T. Elleflot, J. Errard, G. Fabbian, C. Feng, T. Fujino, N. Goeckner-Wald, M. Hasegawa, M. Hazumi, C. A. Hill, L. Howe, N. Katayama, B. Keating, S. Kikuchi, A. Kusaka, A. T. Lee, D. Leon, E. Linder, L. N. Lowry, F. Matsuda, T. Matsumura, Y. Minami, T. Namikawa, M. Navaroli, H. Nishino, J. Peloton, A. T. P. Pham, D. Poletti, G. Puglisi, C. L. Reichardt, Y. Segawa, B. D. Sherwin, M. Silva-Feaver, P. Siritanasak, R. Stompor, O. Tajima, S. Takatori, D. Tanabe, G. P. Teply, C. Vergès

摘要:

仅使用来自POLARBEAR实验的宇宙微波背景偏振数据,我们测量了$B$模式在亚度尺度上的偏振衰减,其显著性超过了$5σ$。我们实现了一个14%的$B$模式的功率方差减少,最高的内部去透镜化,并提高到2%的结果,第一次应用迭代最大后验去透镜化方法。我们的分析表明,内部脱透镜的能力,作为一种手段,提高通货膨胀模型的约束,铺平了道路,为下一代原始$B$模式实验的最佳分析。

英文摘要:

Using only cosmic microwave background polarization data from the POLARBEAR experiment, we measure $B$-mode polarization delensing on subdegree scales at more than $5σ$ significance. We achieve a 14% $B$-mode power variance reduction, the highest to date for internal delensing, and improve this result to 2% by applying for the first time an iterative maximum a posteriori delensing method. Our analysis demonstrates the capability of internal delensing as a means of improving constraints on inflationary models, paving the way for the optimal analysis of next-generation primordial $B$-mode experiments.

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。

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