利用地基CMB偏振实验POLARBEAR测量对流层冰云
天体物理仪器与方法
2019-01-23 v1 宇宙学与河外天体物理
大气与海洋物理
摘要
大气偏振一直是面向宇宙微波背景（CMB）偏振的地基实验长期关注的问题。对流层上部云中的冰晶散射来自地面的热辐射并产生水平偏振信号。我们报道利用位于智利阿塔卡马沙漠、观测频率为150 GHz的地基CMB实验POLARBEAR对云信号的详细分析。当网络摄像头监测到望远镜与天空出现云时，我们观测到水平偏振的低频涨落暂态增强（“偏振爆发”，下文如此称谓）达0.1 K。利用三年数据，无偏振爆发与云相关性的假设以>24的统计显著性被拒绝。我们考虑了许多其他可能性，包括仪器与环境效应，未发现比云更能解释数据的其他原因。我们还讨论了云偏振对未来地基CMB偏振实验的影响。
引用
@article{arxiv.1809.06556,
title = {Measurements of tropospheric ice clouds with a ground-based CMB polarization experiment, POLARBEAR},
author = {Satoru Takakura and Mario A. O. Aguilar-Faúndez and Yoshiki Akiba and Kam Arnold and Carlo Baccigalupi and Darcy Barron and Dominic Beck and Federico Bianchini and David Boettger and Julian Borrill and Kolen Cheung and Yuji Chinone and Tucker Elleflot and Josquin Errard and Giulio Fabbian and Chang Feng and Neil Goeckner-Wald and Takaho Hamada and Masaya Hasegawa and Masashi Hazumi and Logan Howe and Daisuke Kaneko and Nobuhiko Katayama and Brian Keating and Reijo Keskitalo and Theodore Kisner and Nicoletta Krachmalnicoff and Akito Kusaka and Adrian T. Lee and Lindsay N. Lowry and Frederick T. Matsuda and Andrew J. May and Yuto Minami and Martin Navaroli and Haruki Nishino and Lucio Piccirillo and Davide Poletti and Giuseppe Puglisi and Christian L. Reichardt and Yuuko Segawa and Maximiliano Silva-Feaver and Praween Siritanasak and Aritoki Suzuki and Osamu Tajima and Sayuri Takatori and Daiki Tanabe and Grant P. Teply and Calvin Tsai},
journal= {arXiv preprint arXiv:1809.06556},
year = {2019}
}
备注
14 pages, 12 figures, 1 table, Submitted to ApJ