13 years of timing of PSR B1259-63

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	13 years of timing of PSR B1259-63
	Wang, N; Johnston, S ; Manchester, RN
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2004-06-21
卷号	351 期号:2 页码:599-606
关键词	binaries : general pulsars : individual : PSR B1259-63
ISSN号	0035-8711
通讯作者	na.wang@xao.ac.cn
英文摘要	This paper summarizes the results of 13 years of timing observations of a unique binary pulsar, PSR B1259-63, which has a massive B2e star companion. The data span encompasses four complete orbits and includes the periastron passages in 1990, 1994, 1997 and 2000. Changes in dispersion measure occurring around the 1994, 1997 and 2000 periastrons are measured and accounted for in the timing analysis. There is good evidence for a small glitch in the pulsar period in 1997 August, not long after the 1997 periastron, and a significant frequency second derivative indicating timing noise. We find that spin-orbit coupling with secular changes in periastron longitude and projected semimajor axis (x) cannot account for the observed period variations over the whole data set. While fitting the data fairly well, changes in pulsar period parameters at each periastron seem ruled out both by X-ray observations and by the large apparent changes in pulsar frequency derivative. Essentially all of the systematic period variations are accounted for by a model consisting of the 1997 August glitch and step changes in x at each periastron. These changes must be due to changes in the orbit inclination, but we can find no plausible mechanism to account for them. It is possible that timing noise may mask the actual changes in orbital parameters at each periastron, but the good fit to the data of the x step-change model suggests that short-term timing noise is not significant.
学科主题	致密天体、高能和基础物理
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	PSR B1259-63 ; PERIASTRON PASSAGE ; BINARY-SYSTEMS ; PULSAR ; RADIO ; EMISSION ; EVOLUTION ; RECEIVER ; FORMULA ; STARS
收录类别	SCI
资助信息	国家自然科学基金
原文出处	http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-2966/issues
语种	英语
WOS记录号	WOS:000221976900020
公开日期	2013-03-06
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/100]
专题	脉冲星研究团组新疆天文台_射电天文研究室新疆天文台_其它
作者单位	1.Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia 2.CSIRO, Australia Telescope Natl Facil, Epping, NSW 1710, Australia 3.CAS, Natl Astron Observ, Urumqi 830011, Peoples R China
推荐引用方式 GB/T 7714	Wang, N,Johnston, S,Manchester, RN. 13 years of timing of PSR B1259-63[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2004,351(2):599-606.
APA	Wang, N,Johnston, S,&Manchester, RN.(2004).13 years of timing of PSR B1259-63.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,351(2),599-606.
MLA	Wang, N,et al."13 years of timing of PSR B1259-63".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 351.2(2004):599-606.