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13 results on '"Gao, Guan-Hua"'

1. Timing analysis of the black hole candidate EXO 1846-031 with Insight-HXMT monitoring

Author

Liu, He-Xin, Huang, Yue, Xiao, Guang-Cheng, Bu, Qing-Cui, Qu, Jin-Lu, Zhang, Shu, Zhang, Shuang-Nan, Jia, Shu-Mei, Lu, Fang-Jun, Ma, Xiang, Tao, Lian, Zhang, Wei, Chen, Li, Song, Li-Ming, Li, Ti-Pei, Xu, Yu-Peng, Cao, Xue-Lei, Chen, Yong, Liu, Cong-Zhan, Cai, Ce, Chang, Zhi, Chen, Gang, Chen, Tian-Xiang, Chen, Yi-Bao, Chen, Yu-Peng, Cui, Wei, Cui, Wei-Wei, Deng, Jing-Kang, Dong, Yong-Wei, Du, Yuan-Yuan, Fu, Min-Xue, Gao, Guan-Hua, Gao, He, Gao, Min, Ge, Ming-Yu, Gu, Yu-Dong, Guan, Ju, Guo, Cheng-Cheng, Han, Da-Wei, Huo, Jia, Jiang, Lu-Hua, Jiang, Wei-Chun, Jin, Jing, Jin, Yong-Jie, Kong, Ling-Da, Li, Bing, Li, Cheng-Kui, Li, Gang, Li, Mao-Shun, Li, Wei, Li, Xian, Li, Xiao-Bo, Li, Xu-Fang, Li, Yang-Guo, Li, Zheng-Wei, Liang, Xiao-Hua, Liao, Jing-Yuan, Liu, Bai-Sheng, Liu, Guo-Qing, Liu, Hong-Wei, Liu, Xiao-Jing, Liu, Yi-Nong, Lu, Bo, Lu, Xue-Feng, Luo, Qi, Luo, Tao, Meng, Bin, Nang, Yi, Nie, Jian-Yin, Ou, Ge, Sai, Na, Shang, Ren-Cheng, Song, Xin-Ying, Sun, Liang, Tan, Ying, Tuo, You-Li, Wang, Chen, Wang, Guo-Feng, Wang, Juan, Wang, Ling-Jun, Wang, Weng-Shuai, Wang, Yu-Sa., Wen, Xiang-Yang, Wu, Bai-Yang, Wu, Bo-Bing, Wu, Mei, Xiao, Shuo, Xiong, Shao-Lin, Xu, He, Yang, Jia-Wei, Yang, Sheng, Yang, Yan-Ji, Yang, Yi-Jung, Yi, Qi-Bin, Yin, Qian-Qing, You, Yuan, Zhang, Ai-Mei, Zhang, Cheng-Mo, Zhang, Fan, Zhang, Hong-Mei, Zhang, Juan, Zhang, Tong, Zhang, Wan-Chang, Zhang, Wen-Zhao, Yi-Zhang, Zhang, Yi-Fei, Zhang, Yong-Jie, Zhang, Yuan-Hang, Zhang, Yue, Zhang, Zhao, Zhang, Zhi, Zhang, Zi-Liang, Zhao, Hai-Sheng, Zhao, Xiao-Fan, Zheng, Shi-Jie, Zheng, Yao-Guang, Zhou, Deng-Ke, Zhou, Jian-Feng, Zhu, Yu-Xuan, Zhuang, Ren-Lin, and Zhu, Yue

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

We present the observational results from a detailed timing analysis of the black hole candidate EXO 1846-031 during its outburst in 2019 with the observations of Insight-HXMT, NICER and MAXI. This outburst can be classfied roughly into four different states. Type-C quasi-periodic oscillations (QPOs) observed by NICER (about 0.1-6Hz) and Insight-HXMT (about 0.7-8Hz) are also reported in this work. Meanwhile, we study various physical quantities related to QPO frequency.The QPO rms-frequency relationship in three energy band 1-10 keV indicates that there is a turning pointing in frequency around 2 Hz,which is similar to that of GRS 1915+105. A possible hypothesis for the relationship above may be related to the inclination of the source, which may require a high inclination to explain it. The relationships between QPO frequency and QPO rms,hardness,total fractional rms and count rate have also been found in other transient sources, which can indicate that the origin of type-C QPOs is non-thermal.

Published
2020
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2. Discovery of oscillations above 200 keV in a black hole X-ray binary with Insight-HXMT

Author

Ma, Xiang, Tao, Lian, Zhang, Shuang-Nan, Zhang, Liang, Bu, Qing-Cui, Ge, Ming-Yu, Chen, Yu-Peng, Qu, Jin-Lu, Zhang, Shu, Lu, Fang-Jun, Song, Li-Ming, Yang, Yi-Jung, Yuan, Feng, Cai, Ce, Cao, Xue-Lei, Chang, Zhi, Chen, Gang, Chen, Li, Chen, Tian-Xiang, Chen, Yi-Bao, Chen, Yong, Cui, Wei, Cui, Wei-Wei, Deng, Jing-Kang, Dong, Yong-Wei, Du, Yuan-Yuan, Fu, Min-Xue, Gao, Guan-Hua, Gao, He, Gao, Min, Gu, Yu-Dong, Guan, Ju, Guo, Cheng-Cheng, Han, Da-Wei, Huang, Yue, Huo, Jia, Ji, Long, Jia, Shu-Mei, Jiang, Lu-Hua, Jiang, Wei-Chun, Jin, Jing, Jin, Yong-Jie, Kong, Ling-Da, Li, Bing, Li, Cheng-Kui, Li, Gang, Li, Mao-Shun, Li, Ti-Pei, Li, Wei, Li, Xian, Li, Xiao-Bo, Li, Xu-Fang, Li, Yan-Guo, Li, Zheng-Wei, Liang, Xiao-Hua, Liao, Jin-Yuan, Liu, Bai-Sheng, Liu, Cong-Zhan, Liu, Guo-Qing, Liu, Hong-Wei, Liu, Xiao-Jing, Liu, Yi-Nong, Lu, Bo, Lu, Xue-Feng, Luo, Qi, Luo, Tao, Meng, Bin, Nang, Yi, Nie, Jian-Yin, Ou, Ge, Sai, Na, Shang, Ren-Cheng, Song, Xin-Ying, Sun, Liang, Tan, Ying, Tuo, Yuo-Li, Wang, Chen, Wang, Guo-Feng, Wang, Juan, Wang, Ling-Jun, Wang, Wen-Shuai, Wang, Yu-Sa, Wen, Xiang-Yang, Wu, Bai-Yang, Wu, Bo-Bing, Wu, Mei, Xiao, Guang-Cheng, Xiao, Shuo, Xie, Fu-Guo, Xiong, Shao-Lin, Xu, He, Xu, Yu-Peng, Yang, Jia-Wei, Yang, Sheng, Yang, Yan-Ji, Yi, Qi-Bin, Yin, Qian-Qing, You, Yuan, Zhang, Ai-Mei, Zhang, Cheng-Mo, Zhang, Fan, Zhang, Hong-Mei, Zhang, Juan, Zhang, Tong, Zhang, Wan-Chang, Zhang, Wei, Zhang, Wen-Zhao, Zhang, Yi, Zhang, Yi-Fei, Zhang, Yong-Jie, Zhang, Yue, Zhang, Zhao, Zhang, Zhi, Zhang, Zi-Liang, Zhao, Hai-Sheng, Zhao, Xiao-Fan, Zheng, Shi-Jie, Zhou, Deng-Ke, Zhou, Jian-Feng, Zhu, Yu-Xuan, Zhu, Yue, and Zhuang, Ren-Lin

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

Low-frequency quasi-periodic oscillations (LFQPOs) are commonly found in black hole X-ray binaries, and their origin is still under debate. The properties of LFQPOs at high energies (above 30 keV) are closely related to the nature of the accretion flow in the innermost regions, and thus play a crucial role in critically testing various theoretical models. The Hard X-ray Modulation Telescope (Insight-HXMT) is capable of detecting emissions above 30 keV, and is therefore an ideal instrument to do so. Here we report the discovery of LFQPOs above 200 keV in the new black hole MAXI J1820+070 in the X-ray hard state, which allows us to understand the behaviours of LFQPOs at hundreds of kiloelectronvolts. The phase lag of the LFQPO is constant around zero below 30 keV, and becomes a soft lag (that is, the high-energy photons arrive first) above 30 keV. The soft lag gradually increases with energy and reaches ~0.9s in the 150-200 keV band. The detection at energies above 200 keV, the large soft lag and the energy-related behaviors of the LFQPO pose a great challenge for most currently existing models, but suggest that the LFQPO probably originates from the precession of a small-scale jet., Comment: 36 pages, 12 figures, 3 tables; published in Nature Astronomy

Published
2020
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3. Studies on the time response distribution of Insigh}-HXMT/LE

Author

Zhao, Xiao-Fan, Zhu, Yu-Xuan, Han, Da-Wei, Cui, Wei-Wei, Li, Wei, Wang, Juan, Wang, Yu-Sa, Zhang, Yi, Yang, Yan-Ji, Lu, Bo, Huo, Jia, Zhang, Zi-Liang, Chen, Tian-Xiang, Li, Mao-Shun, Lv, Zhong-Hua, Chen, Yong, Bu, Qing-Cui, Cai, Ce, Cao, Xue-Lei, Chang, Zhi, Chen, Gang, Chen, Li, Chen, Yi-Bao, Chen, Yu-Peng, Cui, Wei, Deng, Jing-Kang, Dong, Yong-Wei, Du, Yuan-Yuan, Fu, Min-Xue, Gao, Guan-Hua, Gao, He, Gao, Min, Ge, Ming-Yu, Gu, Yu-Dong, Guan, Ju, Guo, Cheng-Cheng, Huang, Yue, Jia, Shu-Mei, Jiang, Lu-Hua, Jiang, Wei-Chun, Jin, Jing, Kong, Ling-Da, Li, Bing, Li, Cheng-Kui, Li, Gang, Li, Ti-Bei, Li, Xian, Li, Xiao-Bo, Li, Xu-Fang, Li, Yan-Guo, Li, Zheng-Wei, Liang, Xiao-Hua, Liao, Jin-Yuan, Liu, Cong-Zhan, Liu, Guo-Qing, Liu, Hong-Wei, Liu, Xiao-Jing, Liu, Yi-Nong, Lu, Fang-Jun, Lu, Xue-Feng, Luo, Qi, Luo, Tao, Ma, Xiang, Meng, Bin, Nang, Yi, Nie, Jian-Ying, Qu, Jin-Lu, Sai, Na, Song, Li-Ming, Song, Xin-Ying, Sun, Liang, Tan, Ying, Tao, Lian, Tuo, You-Li, Wang, Chen, Wang, Guo-Feng, Wen, Xiang-Yang, Wu, Bai-Yang, Wu, Bo-Bing, Wu, Mei, Xiao, Guang-Cheng, Xiao, Shuo, Xiong, Shao-Lin, Xu, Yu-Peng, Yang, Jia-Wei, Yang, Sheng, Yi, Qi-Bin, Yin, Qian-Qing, You, Yuan, Zhang, Ai-Mei, Zhang, Cheng-Mo, Zhang, Fan, Zhang, Juan, Zhang, Shu, Zhang, Shuang-Nan, Zhang, Tong, Zhang, Wan-Chang, Zhang, Wei, Zhang, Wen-Zhao, Zhang, Yi-Fei, Zhang, Yong-Jie, Zhang, Yue, Zhang, Zhao, Zhao, Hai-Sheng, Zheng, Shi-Jie, Zhou, Deng-Ke, Zhou, Jian-Feng, and Zhu, Yue

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The Hard X-ray Modulation Telescope (HXMT) named Insight is China's first X-ray astronomical satellite. The Low Energy X-ray Telescope (LE) is one of its main payloads onboard. The detectors of LE adopt swept charge device CCD236 with L-shaped transfer electrodes. Charges in detection area are read out continuously along specific paths, which leads to a time response distribution of photons readout time. We designed a long exposure readout mode to measure the time response distribution. In this mode, CCD236 firstly performs exposure without readout, then all charges generated in preceding exposure phase are read out completely. Through analysis of the photons readout time in this mode, we obtained the probability distribution of photons readout time.

Published
2019

4. Explorations of two empirical formulae for fermion masses

Author

Gao, Guan-Hua and Li, Nan

Subjects
High Energy Physics - Phenomenology
Abstract

Two empirical formulae for the lepton and quark masses (i.e. Kartavtsev's extended Koide formulae), $K_l=(\sum_l m_l)/(\sum_l\sqrt{m_l})^2=2/3$ and $K_q=(\sum_q m_q)/(\sum_q\sqrt{m_q})^2=2/3$, are explored in this paper. For the lepton sector, we show that $K_l=2/3$, only if the uncertainty of the tauon mass is relaxed to about $2\sigma$ confidence level, and the neutrino masses can consequently be extracted with the current experimental data. For the quark sector, the extended Koide formula should only be applied to the running quark masses, and $K_q$ is found to be rather insensitive to the renormalization effects in a large range of energy scales from GeV to $10^{12}$ GeV. However, $K_q$ is always slightly larger than $2/3$, but the discrepancy is merely about $5\%$., Comment: 8 pages, 3 figures

Published
2015

5. Confirming the spin parameter of the black hole in Cygnus X-1 using the Insight-HXMT

Author

Zhao, Xue-Shan, Dong, Yan-Ting, Gou, Li-Jun, Feng, Ye, Jia, Nan, Li, Yu-Feng, Liao, Zhen-Xuan, Liu, Ji-Ren, Zheng, Xue-Ying, Zhang, Shuang-Nan, Qu, Jin-Lu, Song, Li-Ming, Zhang, Shu, Bu, Qing-Cui, Cai, Ce, Cao, Xue-Lei, Chang, Zhi, Chen, Gang, Chen, Li, Chen, Tian-Xiang, Chen, Yi-Bao, Chen, Yong, Chen, Yu-Peng, Cui, Wei, Cui, Wei-Wei, Deng, Jing-Kang, Dong, Yong-Wei, Du, Yuan-Yuan, Fu, Min-Xue, Gao, Guan-Hua, Gao, He, Gao, Min, Ge, Ming-Yu, Gu, Yu-Dong, Guan, Ju, Guo, Cheng-Cheng, Han, Da-Wei, Huang, Yue, Huo, Jia, Jia, Shu-Mei, Jiang, Lu-Hua, Jiang, Wei-Chun, Jin, Jing, Jin, Yong-Jie, Kong, Ling-Da, Li, Bing, Li, Cheng-Kui, Li, Gang, Li, Mao-Shun, Li, Ti-Pei, Li, Wei, Li, Xian, Li, Xiao-Bo, Li, Xu-Fang, Li, Yan-Guo, Li, Zheng-Wei, Liang, Xiao-Hua, Liao, Jin-Yuan, Liu, Bai-Sheng, Liu, Cong-Zhan, Liu, Guo-Qing, Liu, He-Xin, Liu, Hong-Wei, Liu, Xiao-Jing, Liu, Yi-Nong, Lu, Bo, Lu, Fang-Jun, Lu, Xue-Feng, Luo, Qi, Luo, Tao, Ma, Xiang, Meng, Bin, Nang, Yi, Nie, Jian-Yin, Ou, Ge, Sai, Na, Shang, Ren-Cheng, Song, Xin-Ying, Sun, Liang, Tan, Ying, Tao, Lian, Tuo, You-Li, Wang, Chen, Wang, Guo-Feng, Wang, Juan, Wang, Wen-Shuai, Wang, Yu-Sa, Wen, Xiang-Yang, Wu, Bai-Yang, Wu, Bo-Bing, Wu, Mei, Xiao, Guang-Cheng, Xiao, Shuo, Xiong, Shao-Lin, Xu, Yu-Peng, Yang, Jia-Wei, Yang, Sheng, Yang, Yan-Ji, Yang, Yi-Rong, Yi, Qi-Bin, Yin, Qian-Qing, You, Yuan, Zhang, Ai-Mei, Zhang, Cheng-Mo, Zhang, Fan, Zhang, Hong-Mei, Zhang, Juan, Zhang, Tong, Zhang, Wan-Chang, Zhang, Wei, Zhang, Wen-Zhao, Zhang, Yi, Zhang, Yi-Fei, Zhang, Yong-Jie, Zhang, Yue, Zhang, Zhao, Zhang, Zhi, Zhang, Zi-Liang, Zhao, Hai-Sheng, Zhao, Xiao-Fan, Zheng, Shi-Jie, Zhou, Deng-Ke, Zhou, Jian-Feng, Zhu, Yu-Xuan, Yue-Zhu, and Zhuang, Ren-Lin

Published
2020
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6. Discovery of oscillations above 200 keV in a black hole X-ray binary with Insight-HXMT

Author

Ma, Xiang, Tao, Lian, Zhang, Shuang-Nan, Zhang, Liang, Bu, Qing-Cui, Ge, Ming-Yu, Chen, Yu-Peng, Qu, Jin-Lu, Zhang, Shu, Lu, Fang-Jun, Song, Li-Ming, Yang, Yi-Jung, Yuan, Feng, Cai, Ce, Cao, Xue-Lei, Chang, Zhi, Chen, Gang, Chen, Li, Chen, Tian-Xiang, Chen, Yi-Bao, Chen, Yong, Cui, Wei, Cui, Wei-Wei, Deng, Jing-Kang, Dong, Yong-Wei, Du, Yuan-Yuan, Fu, Min-Xue, Gao, Guan-Hua, Gao, He, Gao, Min, Gu, Yu-Dong, Guan, Ju, Guo, Cheng-Cheng, Han, Da-Wei, Huang, Yue, Huo, Jia, Ji, Long, Jia, Shu-Mei, Jiang, Lu-Hua, Jiang, Wei-Chun, Jin, Jing, Jin, Yong-Jie, Kong, Ling-Da, Li, Bing, Li, Cheng-Kui, Li, Gang, Li, Mao-Shun, Li, Ti-Pei, Li, Wei, Li, Xian, Li, Xiao-Bo, Li, Xu-Fang, Li, Yan-Guo, Li, Zheng-Wei, Liang, Xiao-Hua, Liao, Jin-Yuan, Liu, Bai-Sheng, Liu, Cong-Zhan, Liu, Guo-Qing, Liu, Hong-Wei, Liu, Xiao-Jing, Liu, Yi-Nong, Lu, Bo, Lu, Xue-Feng, Luo, Qi, Luo, Tao, Meng, Bin, Nang, Yi, Nie, Jian-Yin, Ou, Ge, Sai, Na, Shang, Ren-Cheng, Song, Xin-Ying, Sun, Liang, Tan, Ying, Tuo, Yuo-Li, Wang, Chen, Wang, Guo-Feng, Wang, Juan, Wang, Ling-Jun, Wang, Wen-Shuai, Wang, Yu-Sa, Wen, Xiang-Yang, Wu, Bai-Yang, Wu, Bo-Bing, Wu, Mei, Xiao, Guang-Cheng, Xiao, Shuo, Xie, Fu-Guo, Xiong, Shao-Lin, Xu, He, Xu, Yu-Peng, Yang, Jia-Wei, Yang, Sheng, Yang, Yan-Ji, Yi, Qi-Bin, Yin, Qian-Qing, You, Yuan, Zhang, Ai-Mei, Zhang, Cheng-Mo, Zhang, Fan, Zhang, Hong-Mei, Zhang, Juan, Zhang, Tong, Zhang, Wan-Chang, Zhang, Wei, Zhang, Wen-Zhao, Zhang, Yi, Zhang, Yi-Fei, Zhang, Yong-Jie, Zhang, Yue, Zhang, Zhao, Zhang, Zhi, Zhang, Zi-Liang, Zhao, Hai-Sheng, Zhao, Xiao-Fan, Zheng, Shi-Jie, Zhou, Deng-Ke, Zhou, Jian-Feng, Zhu, Yu-Xuan, Zhu, Yue, and Zhuang, Ren-Lin

Published
2021
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8. Development of a 70–110 GHz silicon corrugated horn for cosmic microwave background experiment

Author

Feng, Zhao, primary, Li, Jia‐Ning, additional, Li, Zheng‐Wei, additional, Xu, Yu‐Peng, additional, Liu, Cong‐Zhan, additional, Fan, Jin, additional, Shu, Shi‐Bo, additional, Gao, Guan‐Hua, additional, Zhang, Yi‐Fei, additional, Lu, Xue‐Feng, additional, Li, Xu‐Fang, additional, Lu, Fang‐Jun, additional, Zhang, Ai‐Mei, additional, Gu, Yu‐Dong, additional, Xu, Yu, additional, Xu, He, additional, Wu, Di, additional, and Wang, Ying, additional

Published
2021
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9. Timing analysis of the black hole candidate EXO 1846–031 with Insight-HXMT monitoring

Author

Liu, He-Xin, primary, Huang, Yue, additional, Xiao, Guang-Cheng, additional, Bu, Qing-Cui, additional, Qu, Jin-Lu, additional, Zhang, Shu, additional, Zhang, Shuang-Nan, additional, Jia, Shu-Mei, additional, Lu, Fang-Jun, additional, Ma, Xiang, additional, Tao, Lian, additional, Zhang, Wei, additional, Chen, Li, additional, Song, Li-Ming, additional, Li, Ti-Pei, additional, Xu, Yu-Peng, additional, Cao, Xue-Lei, additional, Chen, Yong, additional, Liu, Cong-Zhan, additional, Cai, Ce, additional, Chang, Zhi, additional, Chen, Gang, additional, Chen, Tian-Xiang, additional, Chen, Yi-Bao, additional, Chen, Yu-Peng, additional, Cui, Wei, additional, Cui, Wei-Wei, additional, Deng, Jing-Kang, additional, Dong, Yong-Wei, additional, Du, Yuan-Yuan, additional, Fu, Min-Xue, additional, Gao, Guan-Hua, additional, Gao, He, additional, Gao, Min, additional, Ge, Ming-Yu, additional, Gu, Yu-Dong, additional, Guan, Ju, additional, Guo, Cheng-Cheng, additional, Han, Da-Wei, additional, Huo, Jia, additional, Jiang, Lu-Hua, additional, Jiang, Wei-Chun, additional, Jin, Jing, additional, Jin, Yong-Jie, additional, Kong, Ling-Da, additional, Li, Bing, additional, Li, Cheng-Kui, additional, Li, Gang, additional, Li, Mao-Shun, additional, Li, Wei, additional, Li, Xian, additional, Li, Xiao-Bo, additional, Li, Xu-Fang, additional, Li, Yang-Guo, additional, Li, Zheng-Wei, additional, Liang, Xiao-Hua, additional, Liao, Jing-Yuan, additional, Liu, Bai-Sheng, additional, Liu, Guo-Qing, additional, Liu, Hong-Wei, additional, Liu, Xiao-Jing, additional, Liu, Yi-Nong, additional, Lu, Bo, additional, Lu, Xue-Feng, additional, Luo, Qi, additional, Luo, Tao, additional, Meng, Bin, additional, Nang, Yi, additional, Nie, Jian-Yin, additional, Ou, Ge, additional, Sai, Na, additional, Shang, Ren-Cheng, additional, Song, Xin-Ying, additional, Sun, Liang, additional, Tan, Ying, additional, Tuo, You-Li, additional, Wang, Chen, additional, Wang, Guo-Feng, additional, Wang, Juan, additional, Wang, Ling-Jun, additional, Wang, Weng-Shuai, additional, Wang, Yu-Sa, additional, Wen, Xiang-Yang, additional, Wu, Bai-Yang, additional, Wu, Bo-Bing, additional, Wu, Mei, additional, Xiao, Shuo, additional, Xiong, Shao-Lin, additional, Xu, He, additional, Yang, Jia-Wei, additional, Yang, Sheng, additional, Yang, Yan-Ji, additional, Yang, Yi-Jung, additional, Yi, Qi-Bin, additional, Yin, Qian-Qing, additional, You, Yuan, additional, Zhang, Ai-Mei, additional, Zhang, Cheng-Mo, additional, Zhang, Fan, additional, Zhang, Hong-Mei, additional, Zhang, Juan, additional, Zhang, Tong, additional, Zhang, Wan-Chang, additional, Zhang, Wen-Zhao, additional, Zhang, Yi, additional, Zhang, Yi-Fei, additional, Zhang, Yong-Jie, additional, Zhang, Yuan-Hang, additional, Zhang, Yue, additional, Zhang, Zhao, additional, Zhang, Zhi, additional, Zhang, Zi-Liang, additional, Zhao, Hai-Sheng, additional, Zhao, Xiao-Fan, additional, Zheng, Shi-Jie, additional, Zheng, Yao-Guang, additional, Zhou, Deng-Ke, additional, Zhou, Jian-Feng, additional, Zhu, Yu-Xuan, additional, Zhuang, Ren-Lin, additional, and Zhu, Yue, additional

Published
2021
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10. Development of a 70–110 GHz silicon corrugated horn for cosmic microwave background experiment.

Author

Feng, Zhao, Li, Jia‐Ning, Li, Zheng‐Wei, Xu, Yu‐Peng, Liu, Cong‐Zhan, Fan, Jin, Shu, Shi‐Bo, Gao, Guan‐Hua, Zhang, Yi‐Fei, Lu, Xue‐Feng, Li, Xu‐Fang, Lu, Fang‐Jun, Zhang, Ai‐Mei, Gu, Yu‐Dong, Xu, Yu, Xu, He, Wu, Di, and Wang, Ying

Subjects
COSMIC background radiation, RECEIVING antennas, ANTENNA arrays, MICROWAVE generation, SEMICONDUCTOR manufacturing, MILLIMETER waves
Abstract

Next generation cosmic microwave background (CMB) polarization telescope will use large arrays of receiver with nearly 100 000 transition edge sensor (TES) detectors and receiving antennas. Such large TES and antenna array is a big challenge for the fabrication of TES and antennas. A 35‐layers silicon‐platelet corrugated horn for 70–110 GHz is designed and fabricated based on the micro electro mechanical system (MEMS) technology. Compared with the traditional corrugated horn, the last layer of the 35‐layers silicon‐platelet is designed with no corrugation to increase the beam symmetry. A parametric HFSS model of the horn was established to evaluate the performance of the horn and effect of fabrication process. The measured S11 and cross‐polarization of the fabricated prototype horn are both below −20 dB while the sidelobe at 70 and 90 GHz is below −20 dB. The beam symmetry of the horn is good in 70–110 GHz band. The measured gain is greater than 15 dBi. These results show that the performance of the designed horn meets the requirement of CMB experiment. [ABSTRACT FROM AUTHOR]

Published
2022
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11. Discovery of oscillations above 200 keV in a black hole X-ray binary with Insight-HXMT

Author

Ma, Xiang, primary, Tao, Lian, additional, Zhang, Shuang-Nan, additional, Zhang, Liang, additional, Bu, Qing-Cui, additional, Ge, Ming-Yu, additional, Chen, Yu-Peng, additional, Qu, Jin-Lu, additional, Zhang, Shu, additional, Lu, Fang-Jun, additional, Song, Li-Ming, additional, Yang, Yi-Jung, additional, Yuan, Feng, additional, Cai, Ce, additional, Cao, Xue-Lei, additional, Chang, Zhi, additional, Chen, Gang, additional, Chen, Li, additional, Chen, Tian-Xiang, additional, Chen, Yi-Bao, additional, Chen, Yong, additional, Cui, Wei, additional, Cui, Wei-Wei, additional, Deng, Jing-Kang, additional, Dong, Yong-Wei, additional, Du, Yuan-Yuan, additional, Fu, Min-Xue, additional, Gao, Guan-Hua, additional, Gao, He, additional, Gao, Min, additional, Gu, Yu-Dong, additional, Guan, Ju, additional, Guo, Cheng-Cheng, additional, Han, Da-Wei, additional, Huang, Yue, additional, Huo, Jia, additional, Ji, Long, additional, Jia, Shu-Mei, additional, Jiang, Lu-Hua, additional, Jiang, Wei-Chun, additional, Jin, Jing, additional, Jin, Yong-Jie, additional, Kong, Ling-Da, additional, Li, Bing, additional, Li, Cheng-Kui, additional, Li, Gang, additional, Li, Mao-Shun, additional, Li, Ti-Pei, additional, Li, Wei, additional, Li, Xian, additional, Li, Xiao-Bo, additional, Li, Xu-Fang, additional, Li, Yan-Guo, additional, Li, Zheng-Wei, additional, Liang, Xiao-Hua, additional, Liao, Jin-Yuan, additional, Liu, Bai-Sheng, additional, Liu, Cong-Zhan, additional, Liu, Guo-Qing, additional, Liu, Hong-Wei, additional, Liu, Xiao-Jing, additional, Liu, Yi-Nong, additional, Lu, Bo, additional, Lu, Xue-Feng, additional, Luo, Qi, additional, Luo, Tao, additional, Meng, Bin, additional, Nang, Yi, additional, Nie, Jian-Yin, additional, Ou, Ge, additional, Sai, Na, additional, Shang, Ren-Cheng, additional, Song, Xin-Ying, additional, Sun, Liang, additional, Tan, Ying, additional, Tuo, Yuo-Li, additional, Wang, Chen, additional, Wang, Guo-Feng, additional, Wang, Juan, additional, Wang, Ling-Jun, additional, Wang, Wen-Shuai, additional, Wang, Yu-Sa, additional, Wen, Xiang-Yang, additional, Wu, Bai-Yang, additional, Wu, Bo-Bing, additional, Wu, Mei, additional, Xiao, Guang-Cheng, additional, Xiao, Shuo, additional, Xie, Fu-Guo, additional, Xiong, Shao-Lin, additional, Xu, He, additional, Xu, Yu-Peng, additional, Yang, Jia-Wei, additional, Yang, Sheng, additional, Yang, Yan-Ji, additional, Yi, Qi-Bin, additional, Yin, Qian-Qing, additional, You, Yuan, additional, Zhang, Ai-Mei, additional, Zhang, Cheng-Mo, additional, Zhang, Fan, additional, Zhang, Hong-Mei, additional, Zhang, Juan, additional, Zhang, Tong, additional, Zhang, Wan-Chang, additional, Zhang, Wei, additional, Zhang, Wen-Zhao, additional, Zhang, Yi, additional, Zhang, Yi-Fei, additional, Zhang, Yong-Jie, additional, Zhang, Yue, additional, Zhang, Zhao, additional, Zhang, Zhi, additional, Zhang, Zi-Liang, additional, Zhao, Hai-Sheng, additional, Zhao, Xiao-Fan, additional, Zheng, Shi-Jie, additional, Zhou, Deng-Ke, additional, Zhou, Jian-Feng, additional, Zhu, Yu-Xuan, additional, Zhu, Yue, additional, and Zhuang, Ren-Lin, additional

Published
2020
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13. Facile Synthesis and Properties of Bifunctional Magnetic-Optical Fe3O4@ZnS Nanocomposites with Core-Shell Structure

Author

Zhang, Dan, Gao, Guan Hua, Ma, Wei, Zhu, Jian Yu, Qiu, Guan Zhou, and Liu, Xiao He

Abstract

Solvothermal synthesized monodisperse Fe3O4 nanoparticles have been encapsulated with zinc sulfide shell through a simple ultrasonic-assisted aqueous-phase method under ambient environment. The monodisperse magnetic cores with average diameter of 180 nm were coated with zinc sulfide shelles (20~60 nm), in order to achieve a core-shell structure with both magnetic and luminescent properties. Structure, morphology and size of products were investigated in detail by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDS). The results display that the Fe3O4 cores have been coated with ZnS shells Magnetic and optical properties of the nanocomposites were measured with vibrating sample magnetometer (VSM) and photoluminescence (PL) spectroscopy. Magnetic study reveals reduction of the saturation magnetization (Ms) for Fe3O4@ZnS nanocomposites compared with uncoated Fe3O4 nanoparticles. Room temperature PL spectrum of the Fe3O4@ZnS samples shows two emission bands occurred at 389 and 292 nm, respectively. The bifunctional magentic-Optical materials can be used in biomedicine. Keywords: Fe3O4; ZnS; core-shell structure; nanocomposites

Published
2013
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