CosmicWeb-21cm array: A New Radio Observation Array Design for 21cm Cosmology
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arXiv
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| Autores principales: | , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866917305566363648 |
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| author | Wang, Jiancheng Mao, Jirong Cheng, Xiangming Zhang, Yigong Su, Jie Zhong, Xiaogu Wang, Min Zhang, Zhigang Wang, Qingwei Xu, Yonghua Li, Zhixuan Qin, Longhua Zhang, Zhengjun |
| author_facet | Wang, Jiancheng Mao, Jirong Cheng, Xiangming Zhang, Yigong Su, Jie Zhong, Xiaogu Wang, Min Zhang, Zhigang Wang, Qingwei Xu, Yonghua Li, Zhixuan Qin, Longhua Zhang, Zhengjun |
| contents | This paper presents the CosmicWeb-21cm array, a novel radio interferometer designed to overcome the key challenges in 21 cm cosmology. Its core innovations include: (1) a multi-scale nested geometry combining a hexagonal core with logarithmic spiral arms for excellent UV coverage and calibration robustness; (2) an intelligent non-uniform frequency sampling strategy that adapts resolution to foreground and signal characteristics, reducing data volume while preserving information; and (3) a machine-learning-enhanced, physics-informed processing pipeline that achieves 99.7\% foreground removal efficiency; (4) a dual-polarization crossed dipole integrated with a dielectric lens and cryogenically cooled LNA, achieving stable beam patterns and low noise temperature ($<35$ K) across 50-250 MHz. These co-designed advances enable high sensitivity mapping of the Epoch of Reionization, dark energy constraints and cosmic-web structure. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_01529 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | CosmicWeb-21cm array: A New Radio Observation Array Design for 21cm Cosmology Wang, Jiancheng Mao, Jirong Cheng, Xiangming Zhang, Yigong Su, Jie Zhong, Xiaogu Wang, Min Zhang, Zhigang Wang, Qingwei Xu, Yonghua Li, Zhixuan Qin, Longhua Zhang, Zhengjun Instrumentation and Methods for Astrophysics Cosmology and Nongalactic Astrophysics This paper presents the CosmicWeb-21cm array, a novel radio interferometer designed to overcome the key challenges in 21 cm cosmology. Its core innovations include: (1) a multi-scale nested geometry combining a hexagonal core with logarithmic spiral arms for excellent UV coverage and calibration robustness; (2) an intelligent non-uniform frequency sampling strategy that adapts resolution to foreground and signal characteristics, reducing data volume while preserving information; and (3) a machine-learning-enhanced, physics-informed processing pipeline that achieves 99.7\% foreground removal efficiency; (4) a dual-polarization crossed dipole integrated with a dielectric lens and cryogenically cooled LNA, achieving stable beam patterns and low noise temperature ($<35$ K) across 50-250 MHz. These co-designed advances enable high sensitivity mapping of the Epoch of Reionization, dark energy constraints and cosmic-web structure. |
| title | CosmicWeb-21cm array: A New Radio Observation Array Design for 21cm Cosmology |
| topic | Instrumentation and Methods for Astrophysics Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2603.01529 |