Zobrazeno 1 - 10
of 760
pro vyhledávání: '"Chen, Xuelei"'
The Minkowski Functionals (MFs), a set of topological summary statistics, have emerged as a powerful tool for extracting non-Gaussian information. We investigate the prospect of constraining the reionization parameters using the MFs of the 21 cm brig
Externí odkaz:
http://arxiv.org/abs/2406.20058
Autor:
Liu, Tianyang, Zhang, Jiajun, Shi, Yuan, Gu, Junhua, Guo, Quan, Xu, Yidong, Deng, Furen, Wu, Fengquan, Cong, Yanping, Chen, Xuelei
The cosmic 21 cm signal serves as a crucial probe for studying the evolutionary history of the Universe. However, detecting the 21 cm signal poses significant challenges due to its extremely faint nature. To mitigate the interference from the Earth's
Externí odkaz:
http://arxiv.org/abs/2406.17000
Autor:
Yu, Zijie, Deng, Furen, Sun, Shijie, Niu, Chenhui, Li, Jixia, Wu, Fengquan, Wang, Wei-Yang, Wang, Yougang, Zuo, Shifan, Shu, Lin, Hao, Jie, Liu, Xiaohui, Ansari, Reza, Pen, Ue-Li, Stebbins, Albert, Timbie, Peter, Chen, Xuelei
This paper presents the design, calibration, and survey strategy of the Fast Radio Burst (FRB) digital backend and its real-time data processing pipeline employed in the Tianlai Cylinder Pathfinder array. The array, consisting of three parallel cylin
Externí odkaz:
http://arxiv.org/abs/2406.15740
The redshifted 21 cm line signal is a powerful probe of the cosmic dawn and the epoch of reionization. The global spectrum can potentially be detected with a single antenna and spectrometer. However, this measurement requires an extremely accurate ca
Externí odkaz:
http://arxiv.org/abs/2405.17742
Tackling Challenges in 21cm Global Spectrum Experiment: the Impact of Ionosphere and Beam Distortion
The HI 21cm global signal from the Cosmic Dawn and the Epoch of Reionization (EoR) offers critical insights into the evolution of our Universe. Yet, its detection presents significant challenges due to its extremely low signal-to-contamination ratio
Externí odkaz:
http://arxiv.org/abs/2404.05284
Autor:
Chen, Xuelei, Gao, Feng, Wu, Fengquan, Zhang, Yechi, Wang, Tong, Liu, Weilin, Zou, Dali, Deng, Furen, Gong, Yang, He, Kai, Li, Jixia, Sun, Shijie, Suo, Nanben, Wang, Yougang, Wu, Pengju, Xu, Jiaqin, Xu, Yidong, Yue, Bin, Zhang, Cong, Zhou, Jia, Zhou, Minquan, Zhu, Chenguang, Zhu, Jiacong
Publikováno v:
Phil. Trans. R. Soc. A.382,20230094(2024)
At the Royal Society meeting in 2023, we have mainly presented our lunar orbit array concept called DSL, and also briefly introduced a concept of a lunar surface array, LARAF. As the DSL concept had been presented before, in this article we introduce
Externí odkaz:
http://arxiv.org/abs/2403.16409
Autor:
Song, Yingxiao, Xiong, Qi, Gong, Yan, Deng, Furen, Chan, Kwan Chuen, Chen, Xuelei, Guo, Qi, Han, Jiaxin, Li, Guoliang, Li, Ming, Liu, Yun, Luo, Yu, Pei, Wenxiang, Wei, Chengliang
Void size function (VSF) contains information of the cosmic large-scale structure (LSS), and can be used to derive the properties of dark energy and dark matter. We predict the VSFs measured from the spectroscopic galaxy survey operated by the China
Externí odkaz:
http://arxiv.org/abs/2402.05492
Type Ia supernova (SN Ia) as a standard candle is an ideal tool to measure cosmic distance and expansion history of the Universe. Here we investigate the SN Ia photometric measurement in the China Space Station Telescope Ultra Deep Field (CSST-UDF) s
Externí odkaz:
http://arxiv.org/abs/2401.16676
We investigate the feasibility of using the velocity acoustic oscillations (VAO) features on the Cosmic Dawn 21 cm power spectrum to probe small-scale density fluctuations. In the standard cold dark matter (CDM) model, Pop III stars form in minihalos
Externí odkaz:
http://arxiv.org/abs/2401.14234
The Tianlai cylinder pathfinder is a radio interferometer array to test 21 cm intensity mapping techniques in the post-reionization era. It works in passive drift scan mode to survey the sky visible in the northern hemisphere. To deal with the large
Externí odkaz:
http://arxiv.org/abs/2312.01064