The application of co-integration theory in ensemble pulsar timescale algorithm

doi:10.1088/1674-4527/19/7/100

NTSC-IR

	The application of co-integration theory in ensemble pulsar timescale algorithm
	Gao, Feng 1,2,3,4; Tong, Ming-Lei1,2 ; Gao, Yu-Ping 1,2,3; Yang, Ting-Gao 1,2; Zhao, Cheng-Shi 1,2
	2019-07-01
发表期刊	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN	1674-4527
卷号	19 期号:7 页码:8
摘要	Employing multiple pulsars and using an appropriate algorithm to establish ensemble pulsar timescale can reduce the influences of various noises on the long-term stability of pulsar timescale, compared to a single pulsar. However, due to the low timing precision and significant red noises of some pulsars, their participation in the construction of ensemble pulsar timescale is often limited. Inspired by the principle of solving non-stationary sequence modeling using co-integration theory, we put forward an algorithm based on co-integration theory to establish an ensemble pulsar timescale. It is found that this algorithm can effectively suppress some noise sources if a co-integration relationship between different pulsar data exists. Different from the classical weighted average algorithm, the co-integration method provides the chance for a pulsar with significant red noises to be included in the establishment of an ensemble pulsar timescale. Based on data from the North American Nanohertz Observatory for Gravitational Waves (NANOGrav), we found that the co-integration algorithm can successfully reduce several timing noises and improve the long-term stability of the ensemble pulsar timescale.
关键词	pulsars: general time methods: analytical
资助者	National Natural Science Foundation of China ; National Natural Science Foundation of China ; Project of the Young Scholar of the "West Light" of the Chinese Academy of Sciences ; Project of the Young Scholar of the "West Light" of the Chinese Academy of Sciences ; Cultivation Fund of Xi'an University of Science and Technology ; Cultivation Fund of Xi'an University of Science and Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Project of the Young Scholar of the "West Light" of the Chinese Academy of Sciences ; Project of the Young Scholar of the "West Light" of the Chinese Academy of Sciences ; Cultivation Fund of Xi'an University of Science and Technology ; Cultivation Fund of Xi'an University of Science and Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Project of the Young Scholar of the "West Light" of the Chinese Academy of Sciences ; Project of the Young Scholar of the "West Light" of the Chinese Academy of Sciences ; Cultivation Fund of Xi'an University of Science and Technology ; Cultivation Fund of Xi'an University of Science and Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Project of the Young Scholar of the "West Light" of the Chinese Academy of Sciences ; Project of the Young Scholar of the "West Light" of the Chinese Academy of Sciences ; Cultivation Fund of Xi'an University of Science and Technology ; Cultivation Fund of Xi'an University of Science and Technology
DOI	10.1088/1674-4527/19/7/100
语种	英语
资助项目	National Natural Science Foundation of China[11373028] ; National Natural Science Foundation of China[U1531112] ; National Natural Science Foundation of China[91736207] ; National Natural Science Foundation of China[11873050] ; National Natural Science Foundation of China[11873049] ; National Natural Science Foundation of China[U1831130] ; Project of the Young Scholar of the "West Light" of the Chinese Academy of Sciences[XAB2015A06] ; Cultivation Fund of Xi'an University of Science and Technology[201707]
资助者	National Natural Science Foundation of China ; National Natural Science Foundation of China ; Project of the Young Scholar of the "West Light" of the Chinese Academy of Sciences ; Project of the Young Scholar of the "West Light" of the Chinese Academy of Sciences ; Cultivation Fund of Xi'an University of Science and Technology ; Cultivation Fund of Xi'an University of Science and Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Project of the Young Scholar of the "West Light" of the Chinese Academy of Sciences ; Project of the Young Scholar of the "West Light" of the Chinese Academy of Sciences ; Cultivation Fund of Xi'an University of Science and Technology ; Cultivation Fund of Xi'an University of Science and Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Project of the Young Scholar of the "West Light" of the Chinese Academy of Sciences ; Project of the Young Scholar of the "West Light" of the Chinese Academy of Sciences ; Cultivation Fund of Xi'an University of Science and Technology ; Cultivation Fund of Xi'an University of Science and Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Project of the Young Scholar of the "West Light" of the Chinese Academy of Sciences ; Project of the Young Scholar of the "West Light" of the Chinese Academy of Sciences ; Cultivation Fund of Xi'an University of Science and Technology ; Cultivation Fund of Xi'an University of Science and Technology
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
WOS记录号	WOS:000475427200011
出版者	NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/11964
专题	中国科学院国家授时中心
通讯作者	Gao, Feng
作者单位	1.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Shaanxi, Peoples R China 2.Chinese Acad Sci, Key Lab Time & Frequency Primary Stand, Xian 710600, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Xian Univ Sci & Technol, Dept Appl Phys, Xian 710054, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Gao, Feng,Tong, Ming-Lei,Gao, Yu-Ping,et al. The application of co-integration theory in ensemble pulsar timescale algorithm[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2019,19(7):8.
APA	Gao, Feng,Tong, Ming-Lei,Gao, Yu-Ping,Yang, Ting-Gao,&Zhao, Cheng-Shi.(2019).The application of co-integration theory in ensemble pulsar timescale algorithm.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,19(7),8.
MLA	Gao, Feng,et al."The application of co-integration theory in ensemble pulsar timescale algorithm".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 19.7(2019):8.