21 cm Cosmology Workshop 2023 &
Tianlai Collaboration Meeting

Northeastern University & National Astronomical Observatories CAS
July 16 - 22, 2023. Shenyang, P.R. China

Program

Date Session Time Speaker Title Chair
7/16 Arrival and registration
7/17 Opening Ceremony 09:00 - 09:10 Xin Zhang (NEU) Welcome and Introduction Yichao Li
HI Experiments 09:10 - 09:40 Xuelei Chen Discovering the Sky at the Longest Wavelength: the Hongmeng Project [PDF]
09:40 - 10:10 Yi Mao Probing EoR with SKA [PDF]
10:10 - 11:00 Group photo and Coffee break [Photo]
HI Data Analysis 11:00 - 11:30 Le Zhang Map Reconstruction of Radio Observations with Conditional Invertible Neural Networks [PDF] Yougang Wang
11:30 - 12:00 Xin Wang Correlation-based Beam Calibration of Intensity Mapping
12:00 - 12:20 John Podczerwinksi Needlet Karhunen-Loève Transform (NKL): A Method For Cleaning Foregrounds From 21 cm Intensity Maps [PDF]
12:20 - 14:00 Lunch
HI Experiments 14:00 - 14:30 Fengshan Liu Probing the Epoch of Reionization with Lyman-Alpha Emitters from Deep Roman NIR Grism Surveys [PDF] Le Zhang
14:30 - 15:00 Jiajun Zhang 21cm Intensity Mapping with BINGO
15:00 - 15:30 Réza Ansari Vera Rubin Observatory and LSST Possible Synergies with 21cm Intensity Mapping Surveys [PDF]
15:30 - 15:50 Coffee break
15:50 - 16:10 Haijun Tian Proposal for the Whole Sky Multi-beam Survey Array in the South China Sea [PDF] Ibitoye Ayodeji
16:10 - 16:40 Yinzhe Ma An introduction to HERA and its current upper limits from Phase I observations
16:40 - 17:10 Discussion on SKA Data Challenge Xuelei Chen and Yi Mao
7/18 HI Sciences 09:30 - 10:00 Hong Guo Neutral Universe Machine: An Empirical Model for the Evolution of HI and H2 Gas in the Universe [PDF] Fengquan Wu
10:00 - 10:20 Jian Fu The simulation of the 21cm interferometer signals for HI gas in galaxies [PDF]
10:20 - 10:50 Sourabh Paul First direct detection of the neutral hydrogen intensity mapping [PDF]
10:50 - 11:10 Calvin Osinga HI Shows its True Colors: Correlations between HI and Galaxy Colour in Simulations [PDF]
11:10 - 11:30 Coffee break
FAST HI 11:30 - 12:00 Ming Zhu Preliminary results from the FAST All Sky HI survey Shifan Zuo
12:00 - 12:20 Wenkai Hu HI absorption blind survey in CRAFTS [PDF]
12:20 - 14:00 Lunch
HI Experiments (Online) 14:00 - 14:30 Leon Koopmans 21-Cosmology of the Dark Ages with the Astrophysical Lunar Observatory [PDF] Xin Wang
14:30 - 15:00 Mario Santos HI Intensity mapping with MeerKAT [PDF]
15:00 - 15:30 Coffee break
15:30 - 16:00 Philip Bull Progress in statistical data analysis methods for 21cm surveys [PDF] Bin Yue
16:00 - 16:30 Steve Cunnington Reconstructing signal loss from foreground cleaning [PDF]
16:30 - 17:00 Kavilan Moodley The HIRAX Project
7/19 HI Sciences 09:30 - 10:00 Olivier Perdereau 21cm X optical correlation and HI clumps with Tianlai low z surveys [PDF] Chen Zhang
10:00 - 10:15 Yue Shao The 21-cm forest as a simultaneous probe of dark matter and cosmic heating history [PDF]
10:15 - 10:30 Pengju Wu Effects of small-scale absorption systems on neutral islands during the late epoch of reionization [PDF]
10:30 - 10:45 Xin Zhang (NAOC) Algorithm of measuring the 21 cm global spectrum with interferometer array [PDF]
10:45 - 11:00 Yanping Cong Using ultra-long wavelengths to research the absorption and distribution of free electrons [PDF]
11:00 - 11:20 Coffee break
HI Sciences 11:20 - 11:40 Denis Tramonte Exploiting HI intensity maps in real space: a direct search for large-scale halos and filament [PDF] Jingzhao Qi
11:40 - 11:55 Zhi-Xing Li HI intensity Mock and comparison with recent measurements
11:55 - 12:10 Ming Zhang HI intensity mapping with MeerKAT: forecast for delay power spectrum measurement using interferometer mode [PDF]
12:10 - 12:25 Siyi Zhao Constrain Primordial non-Gaussianity with 21-cm Power Spectrum and Bispectrum from the Epoch of Reionization [PDF]
12:25 - 14:00 Lunch
HI Data Analysis 14:00 - 14:30 Hayato Shimabukuro 21cm cosmology with machine learning [PDF] Yan Gong
14:30 - 14:50 Shulei Ni Eliminating the Dirty Beam Effect in 21cm Foreground Subtraction with Unsupervised Algorithm [PDF]
14:50 - 15:10 Feng Shi An AI method for 21-cm foreground removal based on frequency-band difference [PDF]
15:10 - 15:25 Liyang Gao Eliminate the effects of polarization leakage with PCA and deep learning [PDF]
15:25 - 15:40 Coffee break
FRB 15:40 - 16:00 Chenhui Niu Using 2DFFT method to search Fast Radio Burst [PDF] Jixia Li
16:00 - 16:20 Liangtian Zhao Digital Backend Solution for the Upgrade of Tianlai Pathfinder [PDF]
16:20 - 16:35 Zewei Zhao Using unlocalized fast radio bursts to measure the Hubble constant [PDF]
16:35 - 16:50 Jiguo Zhang Cosmology with fast radio bursts in the era of SKA [PDF]
16:50 - 17:05 Shangjie Jin Forecast for cosmological parameter estimation in the era of the third-generation gravitational wave detectors [PDF]
Concluding and Acknowledgement
7/20 09:30 - 10:00 Yougang Wang Tianlai surveys and new construction plan
10:00 - 10:30 Jixia Li Overview of Tianlai hardware and data analysis
10:30 - 11:00 Coffee break
11:00 - 11:30 Shifan Zuo Tianlai analysis pipeline
11:30 - 12:00 Kaifeng Yu Tianlai cylinder simulation
12:00 - 14:00 Lunch
14:00 - 14:30 Olivier Perdereau IDROGEN board developments and performances
14:30 - 15:00 Reza Ansari WIYN spectroscopic catalog
15:00 - 15:30 Coffee break
15:30 - 16:00 Zijie Yu Status of FRB search
16:00 - 16:30 Furen Deng FRB outrigger
16:30 - 17:30 Discussion
7/21 09:30 - 10:45 Fengquan Wu Global spectrum experiment
10:45 - 11:15 Coffee break
11:15 - 11:45 Shijie Sun Global spectrum error analysis
11:45 - 12:00 Discussion
12:00 - 14:00 Lunch
14:00 - 14:30 Yichao Li FAST drift scan observation and analysis plans
14:30 - 14:50 Shuanghao Shu FAST HI galaxy observation
14:50 - 15:10 Wenxiu Yang FAST axion gegenschein
15:10 - 15:30 Coffee break
15:30 - 15:50 Xingchen Zhou CO Foreground Removal with deep learning
15:50 - 16:10 Yuer Jiang MeerKAT-CSST cross correlation
16:10 - 17:30 Discussion
7/22 09:30 - 12:00 Discussion
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