PULSARS

作品数：382被引量：269H指数：7
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相关作者：王洪光杨信男更多>>
相关机构：中国科学院新疆天文台国家天文台北京大学广州大学更多>>
相关期刊：《Science China Mathematics》《Chinese Physics B》《Bulletin of the Chinese Academy of Sciences》《现代物理知识》更多>>
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Is the Gum Nebula an important interstellar scattering disk of background pulsars?
《Science China(Physics,Mechanics & Astronomy)》2025年第3期175-186,共12页Rui Wang Zhen Yan Zhiqiang Shen Ke Jia Lee Yajun Wu Rongbing Zhao Zhipeng Huang Xiaowei Wang Jie Liu 
supported by the National SKA Program of China(Grant No.2020SKA0120104);the National Key R&D Program of China(Grant No.2022YFA1603104);the National Natural Science Foundation of China(Grant Nos.U2031119,and 12041301);The image of the Gum Nebula comes from the Southern H-Alpha Sky Survey Atlas(SHASSA),which is supported by the National Science Foundation。
The Gum Nebula is a faint supernova remnant extending about 40°across the southern sky,potentially affecting tens of background pulsars.Though the view that the Gum Nebula acts as a potential scattering screen for ba...
关键词：pulsar interstellar scintillation Gum Nebula 
Probing the shape of the primordial curvature power spectrum and the energy scale of reheating with pulsar timing arrays
《Chinese Physics B》2025年第2期189-197,共9页Lele Fan Jie Zheng Fengge Zhang Zhi-Qiang You 
supported by the National Natural Science Foundation of China (Grant No. 12305059);supported by the National Natural Science Foundation of China (Grant No. 12305075);supported by the National Natural Science Foundation of China (Grant No. 12403002);the Joint Fund of Henan Province Science and Technology R&D Program (Grant No. 235200810111);the Startup Research Fund of Henan Academy of Sciences (Grant No. 241841224);the Startup Research Fund of Henan Academy of Sciences (Grant No. 241841221)。
Recent observations by pulsar timing array collaborations have detected a stochastic common-spectrum signal, which may originate from scalar-induced gravitational waves generated by primordial curvature perturbations ...
关键词：gravitational waves PULSARS 
Differential-geometry-based multi-dimensional joint position-velocity estimation using Crab pulsar profile distortion
《Chinese Journal of Aeronautics》2025年第1期551-567,共17页Jin LIU Huanzi ZHANG Xiaolin NING Xin MA 
supported in part by the National Natural Science Foundation of China(Nos.61873196,62373030,61772187);the Innovation Program for Quantum Science and Technology(No.2021ZD0303400)。
The traditional orbit determination method based on pulsar profile distortion can determine the six elements of the orbit.However,the estimation accuracies of these methods are limited and the computational load of a ...
关键词：Joint Position-Velocity Estimation PULSARS Profile Distortion Orbit Determination Differential Geometry 
Single-pulse Emissions of PSRs J1611-0114 and J1617+1123
《Research in Astronomy and Astrophysics》2024年第11期1-10,共10页Shifang Liu Zhigang Wen Shuangqiang Wang Feifei Kou Wenming Yan Jianping Yuan Qingdong Wu De Zhao Chenchen Miao Na Wang Menyao Xue Di Li Pei Wang Shengnan Sun Weiwei Zhu Juntao Bai 
supported by National Key Research and Development Program of China(2022YFC2205203);the Major Science and Technology Program of Xinjiang Uygur Autonomous Region(No.2022A03013-1);the National Natural Science Foundation of China(NSFC,grant Nos.U1838109 and 12041304);supported by the Major Science and Technology Program of Xinjiang Uygur Autonomous Region(No.2022A03013-1);National Natural Science Foundation of China(NSFC,Grant No.12303053);the 2021 project Xinjiang Uygur autonomous region of China for Tianshan elites,the Youth Innovation Promotion Association of CAS under No.2023069;the Tianshan Talent Training Program(No.2023TSYCCX0100);supported by the National SKA Program of China(grant No.2020SKA0120200);the National Natural Science Foundation of China(NSFC,grant Nos.12041303,12273100 and12288102);the National Key R&D Program of China(grant No.2022YFC2205201);the West Light Foundation of the Chinese Academy of Sciences(grant No.WLFC 2021-XBQNXZ-027);the Major Science and Technology Program of Xinjiang Uygur Autonomous Region(grant No.2022A03013-4)。
In this paper,the emissions from two pulsars,PSRs J1611-0114 and J1617+1123,were investigated using th Five-hundred-meter Aperture Spherical radio Telescope operating at a central frequency of 1250 MHz.Th average puls...
关键词：STARS neutron-(stars:)pulsars general-(stars:)pulsars individual(PSRs J1611-0114 and J1617+1123) 
A GPU Algorithm for Solving the Positions of New Pulsars
《Research in Astronomy and Astrophysics》2024年第11期46-52,共7页Ziyao Fang Weiwei Zhu Chenchen Miao Yukai Zhou Dejiang Zhou Tianlu Chen Qiuyang Fu Lingqi Meng Xueli Miao Jiarui Niu Mengyao Xue 
supported by the National Natural Science Foundation of China(12041303);the National SKA Program of China(2020SKA0120200);the CAS Project for Young Scientists in Basic Research YSBR-063;the National Natural Science Foundation of China(NSFC grant Nos.12203070 and Nos.12203072);the CAS-MPG LEGACY project。
Timing newly discovered pulsars requires gradually building up a timing model that connects observations taken days to months apart.This sometimes can be challenging when our initial knowledge of the pulsar’s positio...
关键词：methods data analysis-(stars:)pulsars general-(stars:)pulsars individual J0706+2707 J2149+5643 
Research on a Multi-source RFI Mitigation Algorithm Using a Reference Antenna Array
《Research in Astronomy and Astrophysics》2024年第11期167-180,共14页Han Wu Hai-Long Zhang Ya-Zhou Zhang Jie Wang Xin-Chen Ye Xu Du Ting Zhang 
supported by the National Key R&D Program of China Nos.2021YFC2203502 and 2022YFF0711502;the National Natural Science Foundation of China(NSFC,grant Nos.12173077,12073067);the Tianshan Talent Project of Xinjiang Uygur Autonomous Region(2022TSYCCX0095 and2023TSYCCX0112);the Scientific Instrument Developing Project of the Chinese Academy of Sciences,grant No.PTYQ2022YZZD01;China National Astronomical Data Center(NADC);the Operation,Maintenance and Upgrading Fund for Astronomical Telescopes and Facility Instruments,budgeted from the Ministry of Finance of China(MOF)and administrated by the Chinese Academy of Sciences(CAS);Natural Science Foundation of Xinjiang Uygur Autonomous Region(2022D01A360)。
We propose a multi-source radio frequency interference(RFI)mitigation method based on a reference antenna array to address the challenge of RFI from multiple directions in radio observation equipment.It introduces a s...
关键词：methods data analysis techniques INTERFEROMETRIC (stars:)pulsars individual 
Fast Two-dimensional Positioning Method of Crab Pulsar Based on Multiple Optimization Algorithms
《Research in Astronomy and Astrophysics》2024年第10期92-103,共12页Jianfeng Chen Jin Liu Xin Ma Xiaolin Ning 
supported by the National Natural Science Foundation of China (Nos. 61873196 and 62373030);the Innovation Program for Quantum Science and Technology(No. 2021ZD0303400)。
In the two-dimensional positioning method of pulsars, the grid method is used to provide non-sensitive direction and positional estimates. However, the grid method has a high computational load and low accuracy due to...
关键词：(stars:)pulsars:individual(Crab pulsar) space vehicles methods:data analysis ASTROMETRY 
The Influence of Different Solar System Planetary Ephemerides on Pulsar Timing
《Research in Astronomy and Astrophysics》2024年第8期85-99,共15页Jian-Peng Dai Wei Han Na Wang 
funded by the Chinese Academy of Sciences(CAS)“Light of West China”Program,the Tianshan talents program(2023TSYCTD0013);The National Natural Science Foundation of China(NSFC,grant No.12288102);The Major Science and Technology Program of Xinjiang Uygur Autonomous Region(No.2022A03013-3)。
Pulsar timing offers a comprehensive avenue for exploring diverse topics in physics and astrophysics.Highprecision solar system planetary ephemeris is crucial for pulsar timing as it provides the positions and velocit...
关键词：(stars)pulsars general-Planetary Systems-time-ephemerides 
The FRB-searching Pipeline of the Tianlai Cylinder Pathfinder Array
《Research in Astronomy and Astrophysics》2024年第8期113-132,共20页Zijie Yu Furen Deng Shijie Sun Chenhui Niu Jixia Li Fengquan Wu Wei-Yang Wang Yougang Wang Shifan Zuo Lin Shu Jie Hao Xiaohui Liu Reza Ansari Ue-Li Pen Albert Stebbins Peter Timbie Xuelei Chen 
support of the National SKA program of China(Nos.2022SKA0110100 and 2022SKA0110101);the National Natural Science Foundation of China(NSFC,Grant Nos.1236114814,12203061,12273070,and 12303004)。
This paper presents the design,calibration,and survey strategy of the Fast Radio Burst(FRB)digital backend and its real-time data processing pipeline employed in the Tianlai Cylinder Pathfinder Array.The array,consist...
关键词：instrumentation interferometers-methods data analysis-(stars )pulsars general-telescopes 
UWLPIPE:Ultra-wide Bandwidth Low-frequency Pulsar Data Processing Pipeline
《Research in Astronomy and Astrophysics》2024年第7期145-157,共13页Ya-Zhou Zhang Hai-Long Zhang Jie Wang Jian Li Xin-Chen Ye Shuang-Qiang Wang Xu Du Han Wu Ting Zhang Shao-Cong Guo 
supported by the National Key R&D Program of China Nos.2021YFC2203502 and 2022YFF0711502;the National Natural Science Foundation of China(NSFC)(12173077);the Tianshan Talent Project of Xinjiang Uygur Autonomous Region(2022TSYCCX0095 and2023TSYCCX0112);the Scientific Instrument Developing Project of the Chinese Academy of Sciences,grant No.PTYQ2022YZZD01;China National Astronomical Data Center(NADC);the Operation,Maintenance and Upgrading Fund for Astronomical Telescopes and Facility Instruments,budgeted from the Ministry of Finance of China(MOF)and administrated by the Chinese Academy of Sciences(CAS);Natural Science Foundation of Xinjiang Uygur Autonomous Region(2022D01A360)。
For real-time processing of ultra-wide bandwidth low-frequency pulsar baseband data,we designed and implemented an ultra-wide bandwidth low-frequency pulsar data processing pipeline(UWLPIPE)based on the shared ringbuf...
关键词：(stars)pulsars general-methods data analysis-techniques MISCELLANEOUS 
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