The NANOGrav 11-year Data Set: High-precision Timing of 45 Millisecond Pulsars

doi:10.3847/1538-4365/aab5b0

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	The NANOGrav 11-year Data Set: High-precision Timing of 45 Millisecond Pulsars
	Arzoumanian, Zaven 1,2; Brazier, Adam 3; Burke-Spolaor, Sarah 4,5; Chamberlin, Sydney 6; Chatterjee, Shami 3; Christy, Brian 7; Cordes, James M.3; Cornish, Neil J.8; Crawford, Fronefield 9; Cromartie, H. Thankful 10
刊名	ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
	2018-04-01
卷号	235 期号:2 页码:41
关键词	binaries: general gravitational waves parallaxes proper motions pulsars: general stars: neutron
ISSN号	0067-0049
DOI	10.3847/1538-4365/aab5b0
英文摘要	We present high-precision timing data over time spans of up to 11 years for 45 millisecond pulsars observed as part of the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) project, aimed at detecting and characterizing low-frequency gravitational waves. The pulsars were observed with the Arecibo Observatory and/or the Green Bank Telescope at frequencies ranging from 327 MHz to 2.3 GHz. Most pulsars were observed with approximately monthly cadence, and six high-timing-precision pulsars were observed weekly. All were observed at widely separated frequencies at each observing epoch in order to fit for time-variable dispersion delays. We describe our methods for data processing, time-of-arrival (TOA) calculation, and the implementation of a new, automated method for removing outlier TOAs. We fit a timing model for each pulsar that includes spin, astrometric, and (for binary pulsars) orbital parameters; time-variable dispersion delays; and parameters that quantify pulse-profile evolution with frequency. The timing solutions provide three new parallax measurements, two new Shapiro delay measurements, and two new measurements of significant orbital-period variations. We fit models that characterize sources of noise for each pulsar. We find that 11 pulsars show significant red noise, with generally smaller spectral indices than typically measured for non-recycled pulsars, possibly suggesting a different origin. A companion paper uses these data to constrain the strength of the gravitational-wave background.
资助项目	National Science Foundation (NSF) Physics Frontiers Center[1430284] ; NSERC Discovery Grant ; Canadian Institute for Advanced Research ; Simons Foundation ; University of Toronto ; NASA Einstein Fellowship[PF4-150120] ; NASA Einstein Fellowship[PF3-140116] ; CAS Pioneer Hundred Talents Program ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB23000000]
WOS关键词	BLACK-HOLE BINARIES ; RELATIVISTIC CELESTIAL MECHANICS ; CONTINUOUS GRAVITATIONAL-WAVES ; GENERAL-RELATIVITY ; PROPER MOTIONS ; ARRAY LIMITS ; SPIN NOISE ; PARALLAXES ; RADIATION ; GRAVITY
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000429560000002
资助机构	National Science Foundation (NSF) Physics Frontiers Center ; National Science Foundation (NSF) Physics Frontiers Center ; NSERC Discovery Grant ; NSERC Discovery Grant ; Canadian Institute for Advanced Research ; Canadian Institute for Advanced Research ; Simons Foundation ; Simons Foundation ; University of Toronto ; University of Toronto ; NASA Einstein Fellowship ; NASA Einstein Fellowship ; CAS Pioneer Hundred Talents Program ; CAS Pioneer Hundred Talents Program ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science Foundation (NSF) Physics Frontiers Center ; National Science Foundation (NSF) Physics Frontiers Center ; NSERC Discovery Grant ; NSERC Discovery Grant ; Canadian Institute for Advanced Research ; Canadian Institute for Advanced Research ; Simons Foundation ; Simons Foundation ; University of Toronto ; University of Toronto ; NASA Einstein Fellowship ; NASA Einstein Fellowship ; CAS Pioneer Hundred Talents Program ; CAS Pioneer Hundred Talents Program ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science Foundation (NSF) Physics Frontiers Center ; National Science Foundation (NSF) Physics Frontiers Center ; NSERC Discovery Grant ; NSERC Discovery Grant ; Canadian Institute for Advanced Research ; Canadian Institute for Advanced Research ; Simons Foundation ; Simons Foundation ; University of Toronto ; University of Toronto ; NASA Einstein Fellowship ; NASA Einstein Fellowship ; CAS Pioneer Hundred Talents Program ; CAS Pioneer Hundred Talents Program ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science Foundation (NSF) Physics Frontiers Center ; National Science Foundation (NSF) Physics Frontiers Center ; NSERC Discovery Grant ; NSERC Discovery Grant ; Canadian Institute for Advanced Research ; Canadian Institute for Advanced Research ; Simons Foundation ; Simons Foundation ; University of Toronto ; University of Toronto ; NASA Einstein Fellowship ; NASA Einstein Fellowship ; CAS Pioneer Hundred Talents Program ; CAS Pioneer Hundred Talents Program ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/37187]
专题	中国科学院国家天文台
通讯作者	Nice, David J.
作者单位	1.NASA, Goddard Space Flight Ctr, Ctr Res & Explorat Space Sci & Technol, Code 662, Greenbelt, MD 20771 USA 2.NASA, Goddard Space Flight Ctr, XRay Astrophys Lab, Code 662, Greenbelt, MD 20771 USA 3.Cornell Univ, Dept Astron, Ithaca, NY 14853 USA 4.West Virginia Univ, Dept Phys & Astron, POB 6315, Morgantown, WV 26506 USA 5.West Virginia Univ, Ctr Gravitat Waves & Cosmol, Chestnut Ridge Res Bldg, Morgantown, WV 26505 USA 6.Penn State Univ, Dept Astron & Astrophys, 525 Davey Lab, University Pk, PA 16802 USA 7.Notre Dame Maryland Univ, Dept Math Comp Sci & Phys, 4701 N Charles St, Baltimore, MD 21210 USA 8.Montana State Univ, Dept Phys, Bozeman, MT 59717 USA 9.Franklin & Marshall Coll, Dept Phys & Astron, POB 3003, Lancaster, PA 17604 USA 10.Univ Virginia, Dept Astron, POB 400325, Charlottesville, VA 22904 USA
推荐引用方式 GB/T 7714	Arzoumanian, Zaven,Brazier, Adam,Burke-Spolaor, Sarah,et al. The NANOGrav 11-year Data Set: High-precision Timing of 45 Millisecond Pulsars[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2018,235(2):41.
APA	Arzoumanian, Zaven.,Brazier, Adam.,Burke-Spolaor, Sarah.,Chamberlin, Sydney.,Chatterjee, Shami.,...&Zhu, Weiwei.(2018).The NANOGrav 11-year Data Set: High-precision Timing of 45 Millisecond Pulsars.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,235(2),41.
MLA	Arzoumanian, Zaven,et al."The NANOGrav 11-year Data Set: High-precision Timing of 45 Millisecond Pulsars".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 235.2(2018):41.