probingprimordialgravitationalwavesalicmbpolarizationtelescope

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	probingprimordialgravitationalwavesalicmbpolarizationtelescope
	Li Hong 5; Li Siyu 5; Liu Yang 5; Li Yongping 5; Cai Yifu 4; Li Mingzhe 4; Zhao Gongbo 3; Liu Congzhan 5; Li Zhengwei 5; Xu He 5
刊名	nationalsciencereview
	2019
卷号	6 期号:1 页码:145
ISSN号	2095-5138
英文摘要	In this paper, we will give a general introduction to the ali cmb polarization telescope (alicpt) project, which is a sino-us joint project led by the institute of high energy physics and involves many different institutes in china. it is the first ground-based cosmic microwave background (cmb) polarization experiment in china and an integral part of china's gravitational-wave program. the main scientific goal of the alicpt project is to probe the primordial gravitational waves (pgws) originating from the very early universe. the alicpt project includes two stages. the first stage, referred to as alicpt-1, is to build a telescope in the ali region of tibet at an altitude of 5250 meters. once completed, it will be the highest ground-based cmb observatory in the world and will open a new window for probing pgws in the northern hemisphere. the alicpt-1 telescope is designed to have about 7000 transition-edge sensor detectors at 95 ghz and 150 ghz. the second stage is to have a more sensitive telescope (alicpt-2) with more than 20 000 detectors. our simulations show that alicpt will improve the current constraint on the tensor-to-scalar ratio r by one order of magnitude with three years' observation. besides the pgws, alicpt will also enable a precise measurement of the cmb rotation angle and provide a precise test of the cpt symmetry. we show that three years' observation will improve the current limit by two orders of magnitude.
语种	英语
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/45527]
专题	中国科学院国家天文台
作者单位	1.史丹佛大学 2.北京大学 3.中国科学院国家天文台 4.中国科学技术大学 5.中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Li Hong,Li Siyu,Liu Yang,et al. probingprimordialgravitationalwavesalicmbpolarizationtelescope[J]. nationalsciencereview,2019,6(1):145.
APA	Li Hong.,Li Siyu.,Liu Yang.,Li Yongping.,Cai Yifu.,...&Zhang Xinmin.(2019).probingprimordialgravitationalwavesalicmbpolarizationtelescope.nationalsciencereview,6(1),145.
MLA	Li Hong,et al."probingprimordialgravitationalwavesalicmbpolarizationtelescope".nationalsciencereview 6.1(2019):145.