no code implementations • 1 Dec 2019 • Dongchao Zheng, Weitian Li, Zhenghao Zhu, Chenxi Shan, Jiajun Zhang, Linfeng Xiao, Xiaoli Lian, Dan Hu
Cosmic ray electron (CRE) acceleration and cooling are important physical processes in astrophysics.
High Energy Astrophysical Phenomena Cosmology and Nongalactic Astrophysics
4 code implementations • 14 May 2019 • Weitian Li, Haiguang Xu, Zhixian Ma, Dan Hu, Zhenghao Zhu, Chenxi Shan, Jingying Wang, Junhua Gu, Dongchao Zheng, Xiaoli Lian, Qian Zheng, Yu Wang, Jie Zhu, Xiang-Ping Wu
The overwhelming foreground contamination is one of the primary impediments to probing the EoR through measuring the redshifted 21 cm signal.
Cosmology and Nongalactic Astrophysics
1 code implementation • 25 Feb 2019 • Weitian Li, Haiguang Xu, Zhixian Ma, Ruimin Zhu, Dan Hu, Zhenghao Zhu, Junhua Gu, Chenxi Shan, Jie Zhu, Xiang-Ping Wu
When applying the foreground removal methods to uncover the faint cosmological signal from the epoch of reionization (EoR), the foreground spectra are assumed to be smooth.
1 code implementation • 1 Jun 2018 • Zhixian Ma, Jie Zhu, Weitian Li, Haiguang Xu
In this work, we propose a morphology generation framework for two typical radio galaxies namely Fanaroff-Riley type-I (FRI) and type-II (FRII) with deep neural network based autoencoder (DNNAE) and Gaussian mixture models (GMMs).
no code implementations • 7 Mar 2017 • Zhixian Ma, Weitian Li, Lei Wang, Haiguang Xu, Jie Zhu
An approach to recognize the point sources (PS) in the X-ray astronomical images using our newly designed granular binary-tree support vector machine (GBT-SVM) classifier is proposed.