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The NANOGrav 12.5 yr Data Set: Wideband Timing of 47 Millisecond Pulsars
Alam,Md F.1; Arzoumanian,Zaven2; Baker,Paul T.3; Blumer,Harsha4,5; Bohler,Keith E.6; Brazier,Adam7; Brook,Paul R.4,5; Burke-Spolaor,Sarah4,5; Caballero,Keeisi6; Camuccio,Richard S.6; Chamberlain,Rachel L.1; Chatterjee,Shami7; Cordes,James M.7; Cornish,Neil J.8; Crawford,Fronefield1; Cromartie,H. Thankful7; DeCesar,Megan E.9,10; Demorest,Paul B.11; Dolch,Timothy12; Ellis,Justin A.13; Ferdman,Robert D.14; Ferrara,Elizabeth C.15; Fiore,William4,5,16; Fonseca,Emmanuel17; Garcia,Yhamil6; Garver-Daniels,Nathan4,5; Gentile,Peter A.4,5; Good,Deborah C.18; Gusdorff,Jordan A.9; Halmrast,Daniel12,19; Hazboun,Jeffrey S.20; Islo,Kristina16; Jennings,Ross J.7; Jessup,Cody8,12; Jones,Megan L.16; Kaiser,Andrew R.4,5; Kaplan,David L.16; Kelley,Luke Zoltan21; Key,Joey Shapiro20; Lam,Michael T.22,23; W. Lazio,T. Joseph24; Lorimer,Duncan R.4,5; Luo,Jing25; Lynch,Ryan S.26; Madison,Dustin R.4,5; Maraccini,Kaleb16; McLaughlin,Maura A.4,5; Mingarelli,Chiara M. F.27,28; Ng,Cherry29; Nguyen,Benjamin M. X.1; Nice,David J.9; Pennucci,Timothy T.30,31; Pol,Nihan S.4,5; Ramette,Joshua12,32; Ransom,Scott M.30; Ray,Paul S.33; Shapiro-Albert,Brent J.4,5; Siemens,Xavier16,34; Simon,Joseph24; Spiewak,Renée35; Stairs,Ingrid H.18; Stinebring,Daniel R.36; Stovall,Kevin11; Swiggum,Joseph K.9; Taylor,Stephen R.37; Tripepi,Michael12,38; Vallisneri,Michele24; Vigeland,Sarah J.16; Witt,Caitlin A.4,5; Zhu,Weiwei39
2020-12-21
Source PublicationThe Astrophysical Journal Supplement Series
ISSN0067-0049
Volume252Issue:1
AbstractAbstract We present a new analysis of the profile data from the 47 millisecond pulsars comprising the 12.5 yr data set of the North American Nanohertz Observatory for Gravitational Waves, which is presented in a parallel paper (Alam et al., hereafter NG12.5). Our reprocessing is performed using “wideband” timing methods, which use frequency-dependent template profiles, simultaneous time-of-arrival (TOA) and dispersion measure (DM) measurements from broadband observations, and novel analysis techniques. In particular, the wideband DM measurements are used to constrain the DM portion of the timing model. We compare the ensemble timing results to those in NG12.5 by examining the timing residuals, timing models, and noise-model components. There is a remarkable level of agreement across all metrics considered. Our best-timed pulsars produce encouragingly similar results to those from NG12.5. In certain cases, such as high-DM pulsars with profile broadening or sources that are weak and scintillating, wideband timing techniques prove to be beneficial, leading to more precise timing model parameters by 10%–15%. The high-precision, multiband measurements of several pulsars indicate frequency-dependent DMs. Compared to the narrowband analysis in NG12.5, the TOA volume is reduced by a factor of 33, which may ultimately facilitate computational speed-ups for complex pulsar timing array analyses. This first wideband pulsar timing data set is a stepping stone, and its consistent results with NG12.5 assure us that such data sets are appropriate for gravitational wave analyses.
KeywordMillisecond pulsars Pulsar timing method Rotation powered pulsars Binary pulsars Radio pulsars Pulsars Gravitational waves Astronomy data analysis Interstellar medium
DOI10.3847/1538-4365/abc6a1
Language英语
WOS IDIOP:0067-0049-252-1-abc6a1
PublisherThe American Astronomical Society
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/61401
Collection中国科学院国家天文台
Corresponding AuthorPennucci,Timothy T.
Affiliation1.Department of Physics and Astronomy, Franklin & Marshall College, P.O. Box 3003, Lancaster, PA 17604, USA
2.X-Ray Astrophysics Laboratory, NASA Goddard Space Flight Center, Code 662, Greenbelt, MD 20771, USA
3.Department of Physics and Astronomy, Widener University, One University Place, Chester, PA 19013, USA
4.Department of Physics and Astronomy, West Virginia University, P.O. Box 6315, Morgantown, WV 26506, USA
5.Center for Gravitational Waves and Cosmology, West Virginia University, Chestnut Ridge Research Building, Morgantown, WV 26505, USA
6.Center for Advanced Radio Astronomy, University of Texas-Rio Grande Valley, Brownsville, TX 78520, USA
7.Cornell Center for Astrophysics and Planetary Science and Department of Astronomy, Cornell University, Ithaca, NY 14853, USA
8.Department of Physics, Montana State University, Bozeman, MT 59717, USA
9.Department of Physics, Lafayette College, Easton, PA 18042, USA
10.George Mason University, Fairfax, VA 22030, USA
11.National Radio Astronomy Observatory, 1003 Lopezville Road, Socorro, NM 87801, USA
12.Department of Physics, Hillsdale College, 33 E. College Street, Hillsdale, MI 49242, USA
13.Infinia ML, 202 Rigsbee Avenue, Durham, NC 27701, USA
14.School of Chemistry, University of East Anglia, Norwich, NR4 7TJ, UK
15.NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
16.Center for Gravitation, Cosmology and Astrophysics, Department of Physics, University of Wisconsin-Milwaukee, P.O. Box 413, Milwaukee, WI 53201, USA
17.Department of Physics, McGill University, 3600 University Street, Montreal, QC H3A 2T8, Canada
18.Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, Canada
19.Department of Mathematics, University of California, Santa Barbara, CA 93106, USA
20.University of Washington Bothell, 18115 Campus Way NE, Bothell, WA 98011, USA
21.Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA), Northwestern University, Evanston, IL 60208, USA
22.School of Physics and Astronomy, Rochester Institute of Technology, Rochester, NY 14623, USA
23.Laboratory for Multiwavelength Astrophysics, Rochester Institute of Technology, Rochester, NY 14623, USA
24.Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
25.Department of Astronomy & Astrophysics, University of Toronto, 50 St. George Street, Toronto, ON M5S 3H4, Canada
26.Green Bank Observatory, P.O. Box 2, Green Bank, WV 24944, USA
27.Center for Computational Astrophysics, Flatiron Institute, 162 5th Avenue, New York, NY 10010, USA
28.Department of Physics, University of Connecticut, 196 Auditorium Road, U-3046, Storrs, CT 06269-3046, USA
29.Dunlap Institute for Astronomy and Astrophysics, University of Toronto, 50 St. George Street, Toronto, ON M5S 3H4, Canada
30.National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903, USA; tim.pennucci@nanograv.org
31.Institute of Physics, E?tv?s Loránd University, Pázmány P.s. 1/A, 1117 Budapest, Hungary
32.Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139-4307, USA
33.Space Science Division, Naval Research Laboratory, Washington, DC 20375-5352, USA
34.Department of Physics, Oregon State University, Corvallis, OR 97331, USA
35.Centre for Astrophysics and Supercomputing, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
36.Department of Physics and Astronomy, Oberlin College, Oberlin, OH 44074, USA
37.Department of Physics and Astronomy, Vanderbilt University, 2301 Vanderbilt Place, Nashville, TN 37235, USA
38.Department of Physics, The Ohio State University, Columbus, OH 43210, USA
39.National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, People’s Republic of China
Corresponding Author Affilication/
Recommended Citation
GB/T 7714
Alam,Md F.,Arzoumanian,Zaven,Baker,Paul T.,et al. The NANOGrav 12.5 yr Data Set: Wideband Timing of 47 Millisecond Pulsars[J]. The Astrophysical Journal Supplement Series,2020,252(1).
APA Alam,Md F..,Arzoumanian,Zaven.,Baker,Paul T..,Blumer,Harsha.,Bohler,Keith E..,...&Zhu,Weiwei.(2020).The NANOGrav 12.5 yr Data Set: Wideband Timing of 47 Millisecond Pulsars.The Astrophysical Journal Supplement Series,252(1).
MLA Alam,Md F.,et al."The NANOGrav 12.5 yr Data Set: Wideband Timing of 47 Millisecond Pulsars".The Astrophysical Journal Supplement Series 252.1(2020).
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