Timing irregularities of PSR J1705-1906

doi:10.1007/s10509-018-3322-1

	Timing irregularities of PSR J1705-1906
	Liu, Y. L.1,2; Yuan, J. P.2,3,4; Wang, J. B.2,4; Liu, X. W.1; Wang, N.2,3,4; Yuen, R.2,3
刊名	ASTROPHYSICS AND SPACE SCIENCE
	2018-05-01
卷号	363 期号:5 页码:9
关键词	Stars: neutron Pulsars: general Pulsars: individual(PSR J1705-1906)
ISSN号	0004-640X
DOI	10.1007/s10509-018-3322-1
通讯作者	Yuan, J. P.(yuanjp@xao.ac.cn)
英文摘要	Timing analysis of PSR J1705-1906 using data from Nanshan 25-m and Parkes 64-m radio telescopes, which span over fourteen years, shows that the pulsar exhibits significant proper motion, and rotation instability. We updated the astrometry parameters and the spin parameters of the pulsar. In order to minimize the effect of timing irregularities on measuring its position, we employ the Cholesky method to analyse the timing noise. We obtain the proper motion of -77(3) mas yr(-1) in right ascension and -38(29) mas yr(-1) in declination. The power spectrum of timing noise is analyzed for the first time, which gives the spectral exponent alpha = -5.2 for the power-law model indicating that the fluctuations in spin frequency and spindown rate dominate the red noise. We detect two small glitches from this pulsar with fractional jump in spin frequency of Delta v/v similar to 2.9 x 10(-10) around MJD 55199 and Delta v/v similar to 2.7 x 10(-10) around MJD 55953. Investigations of pulse profile at different time segments suggest no significant changes in the pulse profiles around the two glitches.
WOS关键词	PULSAR GLITCHES ; PROPER-MOTION ; RADIO PULSARS ; PACKAGE ; TEMPO2 ; SYSTEM ; KICKS
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000431355300018
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/22012]
专题	中国科学院紫金山天文台
通讯作者	Yuan, J. P.
作者单位	1.China West Normal Univ, Sch Phys, Nanchong 637002, Sichuan, Peoples R China 2.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China 3.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China 4.Xinjiang Key Lab Radio Astrophys, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China
推荐引用方式 GB/T 7714	Liu, Y. L.,Yuan, J. P.,Wang, J. B.,et al. Timing irregularities of PSR J1705-1906[J]. ASTROPHYSICS AND SPACE SCIENCE,2018,363(5):9.
APA	Liu, Y. L.,Yuan, J. P.,Wang, J. B.,Liu, X. W.,Wang, N.,&Yuen, R..(2018).Timing irregularities of PSR J1705-1906.ASTROPHYSICS AND SPACE SCIENCE,363(5),9.
MLA	Liu, Y. L.,et al."Timing irregularities of PSR J1705-1906".ASTROPHYSICS AND SPACE SCIENCE 363.5(2018):9.