The correlation between glitch activity and pulse profile changes for the Crab pulsar

doi:10.1007/s10509-020-03783-9

	The correlation between glitch activity and pulse profile changes for the Crab pulsar
	Shang, L. H.2; Zhi, Q. J.1,5; Dang, S. J.3,4; Wang, Q. S.3,4
刊名	ASTROPHYSICS AND SPACE SCIENCE
	2020-04-20
卷号	365 期号:4 页码:70
关键词	Pulsars individual (PSR B0531+21) Stars neutron stars X-rays stars
ISSN号	0004-640X
DOI	10.1007/s10509-020-03783-9
产权排序	4
英文摘要	Using the archival data of the Neutron star Interior Composition Explorer, we study the evolution of two-peak phase separations of the Crab pulsar's X-ray pulse profiles, and present a possible method to predict the next glitch epochs of the Crab pulsar. The phase separations increased with time in a form of quasi-periodic fluctuation. We fit the evolution of the phase separations by using a magic wave function (MW model). It is found that the increasing rates of the phase separation are 9.798 circle +/- 8.997 circle and 7.842 circle +/- 5.112 circle per century at 0.3-1.2 keV and 2-6 keV bands, respectively. The fluctuation periods of the phase separation at 0.3-1.2 keV and 2-6 keV bands are 124.907 +/- 4.936 and 121.478 +/- 3.149 days, respectively. Using the fitting results, we predict that one to three glitch activities would be observed during January and September 2020. It could be useful for guiding the telescopes timely and effectively observe the glitch activities of the Crab pulsar in the future.
资助项目	National Natural Science Foundation[U1731238] ; National Natural Science Foundation[U1838106] ; National Natural Science Foundation[11565010] ; Science and Technology Fund of Guizhou Province[(2016)-4008] ; Science and Technology Fund of Guizhou Province[(2017)5726-37]
WOS关键词	EVOLUTION ; STATE ; EMISSION ; ROTATION
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000529862900001
资助机构	National Natural Science Foundation ; Science and Technology Fund of Guizhou Province
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/3472]
专题	新疆天文台_射电天文研究室
通讯作者	Shang, L. H.
作者单位	1.Guizhou Normal Univ, Sch Phys & Elect Sci, Guiyang 550001, Peoples R China 2.Nanjing Univ Sci & Technol, Sch Elect & Opt Engn, Nanjing 210094, Peoples R China 3.Chinese Acad Sci, XinJiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 4.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 5.Guizhou Normal Univ, Guizhou Prov Key Lab Radio Astron & Data Proc, Guiyang 550001, Peoples R China
推荐引用方式 GB/T 7714	Shang, L. H.,Zhi, Q. J.,Dang, S. J.,et al. The correlation between glitch activity and pulse profile changes for the Crab pulsar[J]. ASTROPHYSICS AND SPACE SCIENCE,2020,365(4):70.
APA	Shang, L. H.,Zhi, Q. J.,Dang, S. J.,&Wang, Q. S..(2020).The correlation between glitch activity and pulse profile changes for the Crab pulsar.ASTROPHYSICS AND SPACE SCIENCE,365(4),70.
MLA	Shang, L. H.,et al."The correlation between glitch activity and pulse profile changes for the Crab pulsar".ASTROPHYSICS AND SPACE SCIENCE 365.4(2020):70.