Reflections and standing waves on the Tianlai cylinder array

• 作 者: Ji-Xia Li Feng-Quan Wu Shi-Jie
• 机 构: NationalAstronomicalObservatories,SchoolofAstronomyandSpaceScience,CenterforAstrophysicsandDepartmen
• 出 处: 天文和天体物理学研究:英文版
• 发表日期: 2021年3期
• 关键词: techniques:interferometric methods:data analysis
• 基金项目: the support of NAOC Astronomical Technology Center,support of the Ministry of Science and Technology(MOST)grant(2012AA121701),supported by MOST grant(2016YFE0100300),the National Natural Science Found

In 21 cm intensity mapping,the spectral smoothness of the foreground is exploited to separate it from the much weaker 21 cm signal.However,the non-smooth frequency response of the instrument complicates this process.Reflections and standing waves generate