An all-sky search for continuous gravitational waves in the Parkes Pulsar Timing Array data set

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	An all-sky search for continuous gravitational waves in the Parkes Pulsar Timing Array data set
	Zhu, X-J 1,2; Hobbs, G.2; Wen, L.1; Coles, W. A.3; Wang, J-B2,4 ; Shannon, R. M.2; Manchester, R. N.2; Bailes, M.5; Bhat, N. D. R.6; Burke-Spolaor, S.7
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2014-11-11
卷号	444 期号:4 页码:3709-3720
关键词	gravitational waves methods: data analysis pulsars: general galaxies: evolution
英文摘要	We present results of an all-sky search in the Parkes Pulsar Timing Array (PPTA) Data Release 1 data set for continuous gravitational waves (GWs) in the frequency range from 5 x 10(-9) to 2 x 10(-7) Hz. Such signals could be produced by individual supermassive binary black hole systems in the early stage of coalescence. We phase up the pulsar timing array data set to form, for each position on the sky, two data streams that correspond to the two GW polarizations and then carry out an optimal search for GW signals on these data streams. Since no statistically significant GWs were detected, we place upper limits on the intrinsic GW strain amplitude h(0) for a range of GW frequencies. For example, at 10(-8) Hz our analysis has excluded with 95 per cent confidence the presence of signals with h(0) >= 1.7 x 10(-14). Our new limits are about a factor of 4 more stringent than those of Yardley et al. based on an earlier PPTA data set and a factor of 2 better than those reported in the recent Arzoumanian et al. paper. We also present PPTA directional sensitivity curves and find that for the most sensitive region on the sky, the current data set is sensitive to GWs from circular supermassive binary black holes with chirp masses of 10(9) M-circle dot out to a luminosity distance of about 100 Mpc. Finally, we set an upper limit of 4 x 10(-3) Mpc(-3) Gyr(-1) at 95 per cent confidence on the coalescence rate of nearby (z less than or similar to 0.1) supermassive binary black holes in circular orbits with chirp masses of 10(10) M-circle dot.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	BLACK-HOLE BINARIES ; COALESCENCE RATE ; 3C 66B ; LIMITS ; BAND ; PACKAGE ; SYSTEMS ; TEMPO2 ; SIGNAL
收录类别	SCI
语种	英语
WOS记录号	WOS:000343400100052
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/616]
专题	脉冲星研究团组新疆天文台_射电天文研究室
作者单位	1.Univ Western Australia, Sch Phys, Crawley, WA 6009, Australia 2.CSIRO Astron & Space Sci, Epping, NSW 1710, Australia 3.Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA 4.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 5.Swinburne Univ Technol, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia 6.Curtin Univ, Int Ctr Radio Astron Res, Bentley, WA 6102, Australia 7.CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA 8.Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China 9.Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England 10.Monash Univ, Sch Phys, Clayton, Vic 3800, Australia
推荐引用方式 GB/T 7714	Zhu, X-J,Hobbs, G.,Wen, L.,et al. An all-sky search for continuous gravitational waves in the Parkes Pulsar Timing Array data set[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2014,444(4):3709-3720.
APA	Zhu, X-J.,Hobbs, G..,Wen, L..,Coles, W. A..,Wang, J-B.,...&van Straten, W..(2014).An all-sky search for continuous gravitational waves in the Parkes Pulsar Timing Array data set.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,444(4),3709-3720.
MLA	Zhu, X-J,et al."An all-sky search for continuous gravitational waves in the Parkes Pulsar Timing Array data set".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 444.4(2014):3709-3720.