Optimal filtration and a pulsar time scale

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	Optimal filtration and a pulsar time scale
	Rodin, A. E. ; Chen, Din
刊名	ASTRONOMY REPORTS
	2011
卷号	55 期号:7 页码:622-628
ISSN号	1063-7729
英文摘要	An algorithm is proposed for constructing a group (ensemble) pulsar time based on the application of optimal Wiener filters. This algorithm makes it possible to separate the contributions of variations of the atomic time scale and of the pulsar rotation to barycentric residual deviations of the pulse arrival times. The method is applied to observations of the pulsars PSR B1855+09 and PSR B1937+21, and is used to obtain corrections to UTC relative to the group pulsar time PTens. Direct comparison of the terrestial time TT(BIPM06) and the group pulsar time PTens shows that they disagree by no more than 0.4 +/- 0.17 A mu s. Based on the fractional instability of the time difference TT(BIPM06)-PTens, sigma (z) = (0.5 +/- 2) x 10(-15), a new limit for the energy density of the gravitational-wave background is established at the level Omega (g) h (2) similar to 10(-9).
收录类别	SCI
语种	英语
公开日期	2012-09-05
内容类型	期刊论文
源URL	[http://210.72.145.45/handle/361003/4758]
专题	国家授时中心_守时理论与方法研究室
推荐引用方式 GB/T 7714	Rodin, A. E.,Chen, Din. Optimal filtration and a pulsar time scale[J]. ASTRONOMY REPORTS,2011,55(7):622-628.
APA	Rodin, A. E.,&Chen, Din.(2011).Optimal filtration and a pulsar time scale.ASTRONOMY REPORTS,55(7),622-628.
MLA	Rodin, A. E.,et al."Optimal filtration and a pulsar time scale".ASTRONOMY REPORTS 55.7(2011):622-628.