Search for the Gravitational-wave Background from Cosmic Strings with the Parkes Pulsar Timing Array Second Data Release

doi:10.3847/1538-4357/ac86cb

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	Search for the Gravitational-wave Background from Cosmic Strings with the Parkes Pulsar Timing Array Second Data Release
	Chen, Zu-Cheng ; Wu, Yu-Mei ; Huang, Qing-Guo
刊名	ASTROPHYSICAL JOURNAL
	2022
卷号	936 期号:1 页码:20
关键词	HOLE BINARY-SYSTEMS SPIN NOISE MODEL RADIATION LIMITS PACKAGE TEMPO2
ISSN号	0004-637X
DOI	10.3847/1538-4357/ac86cb
英文摘要	We perform a direct search for an isotropic stochastic gravitational-wave background (SGWB) produced by cosmic strings in the Parkes Pulsar Timing Array (PPTA) Data Release 2 (DR2). We find no evidence for such an SGWB, and therefore place a 95% confidence level upper limit on the cosmic string tension, G mu, as a function of the reconnection probability, p, which can be less than 1 in the string-theory-inspired models or pure Yang-Mills theory. The upper bound on the cosmic string tension is G mu less than or similar to 5.1 x 10(-10) for p = 1, which is about five orders of magnitude tighter than the bound derived from the null search of individual gravitational-wave bursts from cosmic string cusps in the PPTA DR2, and comparable to previous bounds derived from the null search of the SGWB from cosmic strings.
学科主题	Astronomy & Astrophysics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27852]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 2.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China 3.Beijing Normal Univ, Adv Inst Nat Sci, Zhuhai 519087, Peoples R China 4.[Wu, Yu-Mei 5.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 6.UCAS, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China
推荐引用方式 GB/T 7714	Chen, Zu-Cheng,Wu, Yu-Mei,Huang, Qing-Guo. Search for the Gravitational-wave Background from Cosmic Strings with the Parkes Pulsar Timing Array Second Data Release[J]. ASTROPHYSICAL JOURNAL,2022,936(1):20.
APA	Chen, Zu-Cheng,Wu, Yu-Mei,&Huang, Qing-Guo.(2022).Search for the Gravitational-wave Background from Cosmic Strings with the Parkes Pulsar Timing Array Second Data Release.ASTROPHYSICAL JOURNAL,936(1),20.
MLA	Chen, Zu-Cheng,et al."Search for the Gravitational-wave Background from Cosmic Strings with the Parkes Pulsar Timing Array Second Data Release".ASTROPHYSICAL JOURNAL 936.1(2022):20.