The Parkes pulsar timing array second data release: timing analysis

doi:10.1093/mnras/stab1990

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	The Parkes pulsar timing array second data release: timing analysis
	Reardon, D. J.1,2; Shannon, R. M.1,2; Cameron, A. D.1,2; Goncharov, B.2,3; Hobbs, G. B.4; Middleton, H.1,2,5; Shamohammadi, M.1; Thyagarajan, N.6,7; Bailes, M.1,2; Bhat, N. D. R.8
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2021-10-01
卷号	507 期号:2 页码:2137-2153
关键词	astrometry parallaxes stars: neutron pulsars: general
ISSN号	0035-8711
DOI	10.1093/mnras/stab1990
通讯作者	Reardon, D. J.(dreardon@swin.edu.au)
英文摘要	The main goal of pulsar timing array experiments is to detect correlated signals such as nanohertz-frequency gravitational waves. Pulsar timing data collected in dense monitoring campaigns can also be used to study the stars themselves, their binary companions, and the intervening ionized interstellar medium. Timing observations are extraordinarily sensitive to changes in path-length between the pulsar and the Earth, enabling precise measurements of the pulsar positions, distances and velocities, and the shapes of their orbits. Here we present a timing analysis of 25 pulsars observed as part of the Parkes Pulsar Timing Array (PPTA) project over time spans of up to 24yr. The data are from the second data release of the PPTA, which we have extended by including legacy data. We make the first detection of Shapiro delay in four Southern pulsars (PSRs J1017-7156, J1125-6014, J1545-4550, and J1732-5049), and of parallax in six pulsars. The prominent Shapiro delay of PSR J1125-6014 implies a neutron star mass of M-p = 1.5 +/- 0.2 M-circle dot (68 per cent credibility interval). Measurements of both Shapiro delay and relativistic periastron advance in PSR J1600-3053 yield a large but uncertain pulsar mass of M-circle dot 2.06(-0.41)+(0.44)(68 per cent credibility interval). We measure the distance to PSR J1909-3744 to a precision of 10lyr, indicating that for gravitational wave periods over a decade, the pulsar provides a coherent baseline for pulsar timing array experiments.
资助项目	Commonwealth Government ; Australian Government through the Australian Research Council (ARC)[CE170100004] ; Australian Government through the Australian Research Council (ARC)[FL150100148] ; Astronomy National Collaborative Research Infrastructure Strategy (NCRIS) allocation by the Australian Government ; NASA ; Australian Research Council Future Fellowship[FT190100155] ; Australian Research Council - Australian Government[DE210101738] ; National Natural Science Foundation of China[12041304] ; National SKA Program of China[2020SKA0120100]
WOS关键词	GENERAL-RELATIVITY ; INTERSTELLAR SCINTILLATION ; ORBITAL VARIABILITY ; GRAVITATIONAL-WAVES ; MILLISECOND PULSAR ; BINARY PULSARS ; PROPER MOTION ; SPIN NOISE ; TESTS ; MASS
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000697380800039
资助机构	Commonwealth Government ; Australian Government through the Australian Research Council (ARC) ; Astronomy National Collaborative Research Infrastructure Strategy (NCRIS) allocation by the Australian Government ; NASA ; Australian Research Council Future Fellowship ; Australian Research Council - Australian Government ; National Natural Science Foundation of China ; National SKA Program of China
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/4284]
专题	脉冲星研究团组
通讯作者	Reardon, D. J.
作者单位	1.Swinburne Univ Technol, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia 2.Australia Res Council, Ctr Ercellence Gravitat Wave Discovery OzGrav, Canberra, ACT, Australia 3.Monash Univ, Sch Phys & Astron, Melbourne, Vic 3800, Australia 4.CSIRO Astron & Space Sci, Australia Telescope Natl Facil, POB 76, Epping, NSW 1710, Australia 5.Univ Melbourne, Sch Phys, Parkville, Vic 3010, Australia 6.Natl Radio Astron Observ, Socorro, NM 87801 USA 7.CSIRO Astron & Space Sci CASS, POB 1130, Bentley, WA 6102, Australia 8.Curtin Univ, Int Ctr Radio Astron Res, Bentley, WA 6102, Australia 9.Western Sydney Univ, Sch Sci, Locked Bag 1797, Penrith, NSW 2751, Australia 10.Naval Res Lab, Space Sci Div, Washington, DC 20375 USA
推荐引用方式 GB/T 7714	Reardon, D. J.,Shannon, R. M.,Cameron, A. D.,et al. The Parkes pulsar timing array second data release: timing analysis[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,507(2):2137-2153.
APA	Reardon, D. J..,Shannon, R. M..,Cameron, A. D..,Goncharov, B..,Hobbs, G. B..,...&Zhu, X. J..(2021).The Parkes pulsar timing array second data release: timing analysis.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,507(2),2137-2153.
MLA	Reardon, D. J.,et al."The Parkes pulsar timing array second data release: timing analysis".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 507.2(2021):2137-2153.