J
Junhua Gu
Researcher at Chinese Academy of Sciences
Publications - 28
Citations - 251
Junhua Gu is an academic researcher from Chinese Academy of Sciences. The author has contributed to research in topics: Galaxy cluster & Reionization. The author has an hindex of 10, co-authored 28 publications receiving 211 citations. Previous affiliations of Junhua Gu include Shanghai Jiao Tong University.
Papers
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Journal ArticleDOI
EXPLORING THE COSMIC REIONIZATION EPOCH IN FREQUENCY SPACE: AN IMPROVED APPROACH TO REMOVE THE FOREGROUND IN 21 cm TOMOGRAPHY
Jingying Wang,Haiguang Xu,Tao An,Junhua Gu,Xueying Guo,Weitian Li,Yu Wang,Chengze Liu,Olivier Martineau-Huynh,Olivier Martineau-Huynh,Xiang-Ping Wu +10 more
TL;DR: In this article, the authors re-examine the separation approaches based on the quadratic polynomial fitting technique in frequency space to investigate whether they work satisfactorily with complex foreground by quantitatively evaluating the quality of restored 21 cm signals in terms of sample statistics.
Journal ArticleDOI
Radio sources in the ncp region observed with the 21 centimeter array
TL;DR: In this article, the authors presented a catalog of 624 radio sources detected around the North Celestial Pole (NCP) with the 21 Centimeter Array (21CMA), a radio interferometer dedicated to the statistical measurement of the epoch of reionization (EoR).
Journal ArticleDOI
Separating the EoR signal with a convolutional denoising autoencoder: a deep-learning-based method
Weitian Li,Haiguang Xu,Zhixian Ma,Ruimin Zhu,Dan Hu,Zhenghao Zhu,Junhua Gu,Chenxi Shan,Jie Zhu,Xiang-Ping Wu +9 more
TL;DR: This paper proposes a novel deep-learning-based method that uses a 9-layer convolutional denoising autoencoder (CDAE) to separate the EoR signal and concludes that, by hierarchically learning sophisticated features through multiple Convolutional layers, the CDAE is a powerful tool that can be used to overcome the complicated beam effects and accurately separate the NLP signal.
Journal ArticleDOI
The Giant Radio Array for Neutrino Detection
Olivier Martineau-Huynh,Kumiko Kotera,Didier Charrier,Sijbrand J. de Jong,Krijn D. de Vries,Ke Fang,Zhaoyang Feng,Chad Finley,Quanbu Gou,Junhua Gu,Hongbo Hu,Kohta Murase,Valentin Niess,Foteini Oikonomou,Nicolas Renault-Tinacci,J. Schmid,Charles Timmermans,Zhen Wang,Xiang-Ping Wu,Jianli Zhang,Yi Zhang +20 more
TL;DR: The giant radio array for neutrino detection (GRAND) project as discussed by the authors was proposed to detect high-energy neutrinos via the measurement of air showers induced by the decay in the atmosphere of leptons produced by the interaction of the cosmic neutrons under the Earth surface.
Journal ArticleDOI
Autonomous radio detection of air showers with the TREND50 antenna array
Didier Charrier,K. D. de Vries,Q. B. Gou,Junhua Gu,H. M. Hu,Y. Y. Huang,S. Le Coz,Olivier Martineau-Huynh,Olivier Martineau-Huynh,Valentin Niess,T. Saugrin,M. Tueros,Xiang-Ping Wu,Junqiang Zhang,Y. Zhang +14 more
TL;DR: TREND50 as mentioned in this paper is a radio detection setup of 50 self-triggered antennas working in the 50-100 MHz frequency range and deployed in a radio-quiet valley of the Tianshan mountains (China).