Journal Article

PUBDB-2023-07636

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png The NANOGrav 15 yr Data Set: Observations and Timing of 68 Millisecond Pulsars

Agazie, G. ; Alam, M. F. ; Anumarlapudi, A. ; Archibald, A. M. ; Arzoumanian, Z. ; Baker, P. T. ; Blecha, L. ; Bonidie, V. ; Brazier, A. ; Brook, P. R. ; Burke-Spolaor, S. ; Bécsy, B. ; Chapman, C. ; Charisi, M. ; Chatterjee, S. ; Cohen, T. ; Cordes, J. M. ; Cornish, N. J. ; Crawford, F. ; Cromartie, H. T. ; Crowter, K. ; DeCesar, M. E. ; Demorest, P. B. ; Dolch, T. ; Drachler, B. ; Ferrara, E. C. ; Fiore, W. ; Fonseca, E. ; Freedman, G. E. ; Garver-Daniels, N. ; Gentile, P. A. ; Glaser, J. ; Good, D. C. ; Gültekin, K. ; Hazboun, J. S. ; Jennings, R. J. ; Jessup, C. ; Johnson, A. D. ; Jones, M. L. ; Kaiser, A. R. ; Kaplan, D. L. ; Kelley, L. Z. ; Kerr, M. ; Key, J. S. ; Kuske, A. ; Laal, N. ; Lam, M. T. ; Lamb, W. G. ; W. Lazio, T. J. ; Lewandowska, N. ; Lin, Y. ; Liu, T. ; Lorimer, D. R. ; Luo, J. ; Lynch, R. S. ; Ma, C.-P. ; Madison, D. R. ; Maraccini, K. ; McEwen, A. ; McKee, J. W. ; McLaughlin, M. A. ; McMann, N. ; Meyers, B. W. ; Mingarelli, C. M. F. ; Mitridate, A.DESY* ; Ng, C. ; Nice, D. J. ; Ocker, S. K. ; Olum, K. D. ; Panciu, E. ; Pennucci, T. T. ; Perera, B. B. P. ; Pol, N. S. ; Radovan, H. A. ; Ransom, S. M. ; Ray, P. S. ; Romano, J. D. ; Salo, L. ; Sardesai, S. C. ; Schmiedekamp, C. ; Schmiedekamp, A. ; Schmitz, K. ; Shapiro-Albert, B. J. ; Siemens, X. ; Simon, J. ; Siwek, M. S. ; Stairs, I. H. ; Stinebring, D. R. ; Stovall, K. ; Susobhanan, A. ; Swiggum, J. K. (Corresponding author) ; Taylor, S. R. ; Turner, J. E. ; Unal, C. ; Vallisneri, M. ; Vigeland, S. J. ; Wahl, H. M. ; Wang, Q. ; Witt, C. A. ; Young, O. ; NANOGrav Collaboration (Collaboration author)

2023
Institute of Physics Publ. London

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Please use a persistent id in citations: doi:10.3847/2041-8213/acda9a  doi:10.3204/PUBDB-2023-07636

Report No.: arXiv:2306.16217

Abstract: We present observations and timing analyses of 68 millisecond pulsars (MSPs) comprising the 15 yr data set of the North American Nanohertz Observatory for Gravitational Waves (NANOGrav). NANOGrav is a pulsar timing array (PTA) experiment that is sensitive to low-frequency gravitational waves (GWs). This is NANOGrav's fifth public data release, including both "narrowband" and "wideband" time-of-arrival (TOA) measurements and corresponding pulsar timing models. We have added 21 MSPs and extended our timing baselines by 3 yr, now spanning nearly 16 yr for some of our sources. The data were collected using the Arecibo Observatory, the Green Bank Telescope, and the Very Large Array between frequencies of 327 MHz and 3 GHz, with most sources observed approximately monthly. A number of notable methodological and procedural changes were made compared to our previous data sets. These improve the overall quality of the TOA data set and are part of the transition to new pulsar timing and PTA analysis software packages. For the first time, our data products are accompanied by a full suite of software to reproduce data reduction, analysis, and results. Our timing models include a variety of newly detected astrometric and binary pulsar parameters, including several significant improvements to pulsar mass constraints. We find that the time series of 23 pulsars contain detectable levels of red noise, 10 of which are new measurements. In this data set, we find evidence for a stochastic GW background.

Note: 90 pages, 74 figures, 6 tables; published in Astrophysical Journal Letters as part of Focus on NANOGrav's 15-year Data Set and the Gravitational Wave Background. For questions or comments, please email comments@nanograv.org

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Contributing Institute(s):

1. Theorie-Gruppe (T)
2. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)
2. DFG project 390833306 - EXC 2121: Quantum Universe (390833306) (390833306)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2023

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; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; IF >= 5 ; JCR ; SCOPUS ; Web of Science Core Collection

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