A Linear Decomposition Method to Analyze and Study Pulsar Mode Changes

doi:10.3847/1538-4357/adbdb8

YNAO OpenIR > 射电天文研究组

	A Linear Decomposition Method to Analyze and Study Pulsar Mode Changes
	Hao LF(郝龙飞)1,2 ; Li ZX(李志玄)1,2 ; Shen FX(沈发新)1,2 ; Xu YH(徐永华)1,2 ; Huang YX(黄玉祥)1,2 ; Lee, Kejia 3,4,5; Yu, Qingzheng 6; Wang, Hongguang 7
发表期刊	ASTROPHYSICAL JOURNAL
	2025-04-10
卷号	983 期号:1
DOI	10.3847/1538-4357/adbdb8
产权排序	第1完成单位
收录类别	SCI
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.
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
项目资助者	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
语种	英语
学科领域	天文学 ; 射电与天文学
文章类型	Article
出版者	IOP Publishing Ltd
出版地	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN	0004-637X
URL	查看原文
WOS记录号	WOS:001461083800001
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	RAY
引用统计
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.ynao.ac.cn/handle/114a53/28245
专题	射电天文研究组大样本恒星演化研究组中国科学院天体结构与演化重点实验室
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; [email protected], [email protected]; 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; 3.Department of Astronomy, School of physics, Peking University, Beijing 100871, People's Republic of China; 4.National Astronomical Observatory, Chinese Academy of Sciences, Beijing 100101, People's Republic of China; 5.Beijing Laser Acceleration Innovation Center, Huairou, Beijing 101400, People's Republic of China; 6.Department of Astronomy, Xiamen University, Xiamen 361005, People's Republic of China; 7.School of Physics and Electronic Engineering, Guangzhou University, Guangzhou 510006, People's Republic of China
第一作者单位	中国科学院云南天文台
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).

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
A Linear Decompositi（1833KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览请求全文