The NANOGrav 12.5 yr Data Set: Wideband Timing of 47 Millisecond Pulsars

Md F Alam; Zaven Arzoumanian; Paul T Baker; Harsha Blumer; Keith E Bohler; Adam Brazier; Paul R Brook; Sarah Burke-Spolaor; Keeisi Caballero; Richard S Camuccio; Rachel L Chamberlain; Shami Chatterjee; James M Cordes; Neil J Cornish; Fronefield Crawford; H. Thankful Cromartie; Megan E DeCesar; Paul B Demorest; Timothy Dolch; Justin A Ellis; Robert D Ferdman; Elizabeth C Ferrara; William Fiore; Emmanuel Fonseca; Yhamil Garcia; Nathan Garver-Daniels; Peter A Gentile; Deborah C Good; Jordan A Gusdorff; Daniel Halmrast; Jeffrey S Hazboun; Kristina Islo; Ross J Jennings; Cody Jessup; Megan L Jones; Andrew R Kaiser; David L Kaplan; Luke Zoltan Kelley; Joey Shapiro Key; Michael T Lam; T. Joseph W. Lazio; Duncan R Lorimer; Jing Luo; Ryan S Lynch; Dustin R Madison; Kaleb Maraccini; Maura A McLaughlin; Chiara M. F Mingarelli; Cherry Ng; Benjamin M. X Nguyen; David J Nice; Timothy T Pennucci; Nihan S Pol; Joshua Ramette; Scott M Ransom; Paul S Ray; Brent J Shapiro-Albert; Xavier Siemens; Joseph Simon; Renée Spiewak; Ingrid H Stairs; Daniel R Stinebring; Kevin Stovall; Joseph K Swiggum; Stephen R Taylor; Michael Tripepi; Michele Vallisneri; Sarah J Vigeland; Caitlin A Witt; Weiwei Zhu; NANOGrav Collaboration

doi:10.3847/1538-4365/abc6a1

Journal article

The NANOGrav 12.5 yr Data Set: Wideband Timing of 47 Millisecond Pulsars

Md F Alam, Zaven Arzoumanian, Paul T Baker, Harsha Blumer, Keith E Bohler, Adam Brazier, Paul R Brook, Sarah Burke-Spolaor, Keeisi Caballero, Richard S Camuccio, …

The Astrophysical journal. Supplement series, Vol.252(1)

21/12/2020

DOI: https://doi.org/10.3847/1538-4365/abc6a1

Abstract

Astronomy data analysis

Binary pulsars

Gravitational waves

Interstellar medium

Millisecond pulsars

Pulsar timing method

Pulsars

Radio pulsars

Rotation powered pulsars

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.

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Details

Title: The NANOGrav 12.5 yr Data Set: Wideband Timing of 47 Millisecond Pulsars
Creators - without role: Md F Alam - Franklin & Marshall College Department of Physics and Astronomy, P.O. Box 3003, Lancaster, PA 17604, USA
Zaven Arzoumanian - Goddard Space Flight Center
Paul T Baker - Widener University
Harsha Blumer - West Virginia University
Keith E Bohler - The University of Texas at Austin
Adam Brazier - Cornell University
Paul R Brook - West Virginia University
Sarah Burke-Spolaor - West Virginia University
Keeisi Caballero - The University of Texas at Austin
Richard S Camuccio - The University of Texas at Austin
Rachel L Chamberlain - Franklin & Marshall College
Shami Chatterjee - Cornell University
James M Cordes - Cornell University
Neil J Cornish - Montana State University
Fronefield Crawford - Franklin & Marshall College
H. Thankful Cromartie - Cornell University
Megan E DeCesar - George Mason University
Paul B Demorest - National Radio Astronomy Observatory
Timothy Dolch - Hillsdale College
Justin A Ellis - Durham University
Robert D Ferdman - University of East Anglia
Elizabeth C Ferrara - Goddard Space Flight Center
William Fiore - West Virginia University
Emmanuel Fonseca - McGill University
Yhamil Garcia - The University of Texas at Austin
Nathan Garver-Daniels - West Virginia University
Peter A Gentile - West Virginia University
Deborah C Good - University of British Columbia
Jordan A Gusdorff - Lafayette College
Daniel Halmrast - Hillsdale College
Jeffrey S Hazboun - University of Washington
Kristina Islo - University of Wisconsin–Milwaukee
Ross J Jennings - Cornell University
Cody Jessup - Montana State University
Megan L Jones - University of Wisconsin–Milwaukee
Andrew R Kaiser - West Virginia University
David L Kaplan - University of Wisconsin–Milwaukee
Luke Zoltan Kelley - Northwestern University
Joey Shapiro Key - University of Washington
Michael T Lam - Rochester Institute of Technology
T. Joseph W. Lazio - California Institute of Technology Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
Duncan R Lorimer - West Virginia University
Jing Luo - University of Toronto
Ryan S Lynch - First Green Bank
Dustin R Madison - West Virginia University
Kaleb Maraccini - University of Wisconsin–Milwaukee
Maura A McLaughlin - West Virginia University
Chiara M. F Mingarelli - University of Connecticut
Cherry Ng - University of Toronto
Benjamin M. X Nguyen - Franklin & Marshall College
David J Nice - Lafayette College
Timothy T Pennucci - Eötvös Loránd University
Nihan S Pol - West Virginia University
Joshua Ramette - Hillsdale College
Scott M Ransom - National Radio Astronomy Observatory
Paul S Ray - United States Naval Research Laboratory
Brent J Shapiro-Albert - West Virginia University
Xavier Siemens - University of Wisconsin–Milwaukee
Joseph Simon - California Institute of Technology
Renée Spiewak - Swinburne University of Technology
Ingrid H Stairs - University of British Columbia
Daniel R Stinebring - Oberlin College
Kevin Stovall - National Radio Astronomy Observatory
Joseph K Swiggum - Lafayette College
Stephen R Taylor - Vanderbilt University
Michael Tripepi - Hillsdale College
Michele Vallisneri - California Institute of Technology
Sarah J Vigeland - University of Wisconsin–Milwaukee
Caitlin A Witt - West Virginia University
Weiwei Zhu - Chinese Academy of Sciences
NANOGrav Collaboration
Publication Details: The Astrophysical journal. Supplement series, Vol.252(1)
Publisher: The American Astronomical Society
Number of pages: 53
Grant note: 1430284 / National Science Foundation (NSF) (https://doi.org/10.13039/100000001)
Identifiers: 991019295094207081
Academic Unit: Physics
Language: English
Resource Type: Journal article