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Your search keyword '"Wen, Zhigang"' showing total 6 results
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6 results on '"Wen, Zhigang"'

1. Reciprocating Magnetic Fields in the Pulsar Wind Observed from the Black Widow Pulsar J1720−0534

Author

miao, chenchen, primary, Zhu, Weiwei, additional, Li, Dongzi, additional, Hou, Xian, additional, You, Xiaopeng, additional, Li, Di, additional, Wang, Pei, additional, XUE, Mengyao, additional, Niu, Jiarui, additional, Chen, Yutong, additional, Meng, Lingqi, additional, Zhang, Lei, additional, Rushuang, Zhao, additional, Niu, Chenhui, additional, Yue, Youling, additional, Feng, Yi, additional, Wang, Na, additional, Yuan, Jianping, additional, Wang, Jingbo, additional, Wen, Zhigang, additional, Yan, W. M., additional, Yao, Jumei, additional, Wang, ShuangQiang, additional, Wu, Qingdong, additional, Zhao, De, additional, Bai, Juntao, additional, TEDILA, Habtamu.M., additional, Kou, Feifei, additional, Sun, Shengnan, additional, McLaughlin, M, additional, Blackmon, Victoria, additional, Chi, Minmin, additional, Wang, Shen, additional, Freire, Paulo C. C., additional, Cruces, Marilyn, additional, Kramer, Michael, additional, Champion, David, additional, Yuan, Mao, additional, Wang, Yabiao, additional, Li, Yuxi, additional, Sun, Zhongyi, additional, Wang, Chengjie, additional, Gan, Zhenye, additional, and Miao, Xueli, additional

Published
2023
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2. Single-pulse emission variation of two pulsars discovered by FAST

Author

Guo, Ziping, primary, Wen, Zhigang, additional, Yuan, Jianping, additional, Kou, Feifei, additional, Wu, Qingdong, additional, Wang, Na, additional, Zhu, Weiwei, additional, Li, Di, additional, XUE, Mengyao, additional, Wang, Pei, additional, Miao, Chenchen, additional, Zhao, De, additional, Hu, Yue, additional, Yan, W. M., additional, Niu, Jiarui, additional, Rejep, Rukiye, additional, and Huang, Zhipeng, additional

Published
2023
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4. Development of Pulsar Digital Backend Based on RFSoC

Author

Toktonur Ergesh, Li Jian, Wen Zhigang, Duan Xuefeng, and Pei Xin

Subjects
Physics, Development (topology), Pulsar, Space and Planetary Science, Astronomy and Astrophysics, Astrophysics
Abstract

Radio Frequency System on Chip (RFSoC) offers great potential for implementing a complete next generation signal processing system on a single board for radio astronomy. We designed a pulsar digital backend system based on the ZCU111 board. The system uses RFSoC technology to implement digitization, channelization, correlation and high-speed data transmission in the Xilinx ZU28DR device. We have evaluated the performance of the eight 12-bit RF-ADCs, which are integrated in RFSoC, with the maximum sampling rate of 4.096 GSPS. The RF-ADC sampling frequency, channel bandwidth and time resolution can be configured dynamically in our designed system. To verify the system performance, we deployed the RFSoC board on the Nanshan 26 m radio telescope and observed the pulsar signal with a frequency resolution of 1 MHz and time resolution of 64 μs. In the observation test, we obtained pulsar profiles with high signal-to-noise ratio and accurately searched the DM values. The experimental results show that the performance of RF-ADCs, FPGA and CPU cores in RFSoC is sufficient for radio astronomy signal processing applications.

Published
2022

6. PSR J1926-0652: A Pulsar with Interesting Emission Properties Discovered at FAST.

Author

Zhang, Lei, Li, Di, Hobbs, George, Agar, Crispin H., Manchester, Richard N., Weltevrede, Patrick, Coles, William A., Wang, Pei, Zhu, Weiwei, Wen, Zhigang, Yuan, Jianping, Cameron, Andrew D., Dai, Shi, Liu, Kuo, Zhi, Qijun, Miao, Chenchen, Yuan, Mao, Cao, Shuyun, Feng, Li, and Gan, Hengqian

Subjects
RADIO telescopes, PULSARS, SOLAR radio bursts
Abstract

We describe PSR J1926−0652, a pulsar recently discovered with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). Using sensitive single-pulse detections from FAST and long-term timing observations from the Parkes 64 m radio telescope, we probed phenomena on both long and short timescales. The FAST observations covered a wide frequency range from 270 to 800 MHz, enabling individual pulses to be studied in detail. The pulsar exhibits at least four profile components, short-term nulling lasting from 4 to 450 pulses, complex subpulse drifting behaviors and intermittency on scales of tens of minutes. While the average band spacing P3 is relatively constant across different bursts and components, significant variations in the separation of adjacent bands are seen, especially near the beginning and end of a burst. Band shapes and slopes are quite variable, especially for the trailing components and for the shorter bursts. We show that for each burst the last detectable pulse prior to emission ceasing has different properties compared to other pulses. These complexities pose challenges for the classic carousel-type models. [ABSTRACT FROM AUTHOR]

Published
2019
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