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A Linear Decomposition Method to Analyze and Study Pulsar Mode Changes

文献类型：期刊论文

作者Hao LF(郝龙飞)6,7; Li ZX(李志玄)6,7; Shen FX(沈发新)6,7; Xu YH(徐永华)6,7; Huang YX(黄玉祥)6,7; Lee, Kejia3,4,5; Yu, Qingzheng2; Wang, Hongguang1
刊名ASTROPHYSICAL JOURNAL
出版日期2025-04-10
卷号983期号:1
ISSN号0004-637X
DOI10.3847/1538-4357/adbdb8
产权排序第1完成单位
文献子类Article
英文摘要In this paper, we present the linear decomposition method (LDM), which we developed to detect and analyze pulsar profile variations and mode-changing behavior. We developed LDM utilizing the likelihood function approach assuming the Gaussian noise. The LDM projects pulse profiles onto significance-ordered orthonormal vector bases. We show that the method is similar to the principal component analysis, but the LDM can handle more general situations. We use a simulated data set and data from the Kunming 40 m radio telescope to demonstrate the application of the LDM. We found that the LDM successfully identified mode changes for well-known mode-changing PSR B0329+54 and found a continuous pulse profile evolution for PSR B0355+54. We also show that the LDM can be used to improve the timing precision for mode-changing PSR B0329+54.
学科主题天文学 ; 射电与天文学
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词RAY
资助项目National SKA Program of China[2020SKA0120100]; Special Project of Foreign Science and Technology Cooperation, Yunnan Provincial Science and Technology Department[202003AD150010]; National Key R&D Program of China[2022YFC2205203]; National Natural Science Foundation of China (NSFC)[12073076]; National Natural Science Foundation of China (NSFC)[12173087]; National Natural Science Foundation of China (NSFC)[12041303]; National Natural Science Foundation of China (NSFC)[12063003]; CAS Western Light Youth Project; Max-Planck Partner Group
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001461083800001
出版者IOP Publishing Ltd
资助机构National SKA Program of China[2020SKA0120100] ; Special Project of Foreign Science and Technology Cooperation, Yunnan Provincial Science and Technology Department[202003AD150010] ; National Key R&D Program of China[2022YFC2205203] ; National Natural Science Foundation of China (NSFC)[12073076, 12173087, 12041303, 12063003] ; CAS Western Light Youth Project ; Max-Planck Partner Group
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28245]  
专题云南天文台_射电天文研究组
云南天文台_大样本恒星演化研究组
云南天文台_中国科学院天体结构与演化重点实验室
作者单位1.School of Physics and Electronic Engineering, Guangzhou University, Guangzhou 510006, People's Republic of China
2.Department of Astronomy, Xiamen University, Xiamen 361005, People's Republic of China;
3.Beijing Laser Acceleration Innovation Center, Huairou, Beijing 101400, People's Republic of China;
4.National Astronomical Observatory, Chinese Academy of Sciences, Beijing 100101, People's Republic of China;
5.Department of Astronomy, School of physics, Peking University, Beijing 100871, People's Republic of China;
6.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People's Republic of China;
7.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; haolongfei@ynao.ac.cn, lzx@ynao.ac.cn;
推荐引用方式
GB/T 7714		 Hao LF,Li ZX,Shen FX,et al. A Linear Decomposition Method to Analyze and Study Pulsar Mode Changes[J]. ASTROPHYSICAL JOURNAL,2025,983(1).
APA 郝龙飞.,李志玄.,沈发新.,徐永华.,黄玉祥.,...&Wang, Hongguang.(2025).A Linear Decomposition Method to Analyze and Study Pulsar Mode Changes.ASTROPHYSICAL JOURNAL,983(1).
MLA 郝龙飞,et al."A Linear Decomposition Method to Analyze and Study Pulsar Mode Changes".ASTROPHYSICAL JOURNAL 983.1(2025).

入库方式： OAI收割

来源：云南天文台

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