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

文献类型：期刊论文

作者Arzoumanian, Zaven1,2; Brazier, Adam3; Burke-Spolaor, Sarah4,5; Chamberlin, Sydney6; Chatterjee, Shami3; Christy, Brian7; Cordes, James M.3; Cornish, Neil J.8; Crawford, Fronefield9; Cromartie, H. Thankful10
刊名ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
出版日期2018-04-01
卷号235期号:2页码:41
ISSN号0067-0049
关键词binaries: general gravitational waves parallaxes proper motions pulsars: general stars: neutron
DOI10.3847/1538-4365/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.
WOS关键词BLACK-HOLE BINARIES ; RELATIVISTIC CELESTIAL MECHANICS ; CONTINUOUS GRAVITATIONAL-WAVES ; GENERAL-RELATIVITY ; PROPER MOTIONS ; ARRAY LIMITS ; SPIN NOISE ; PARALLAXES ; RADIATION ; GRAVITY
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
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.

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