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  NANOGrav Limits on Gravitational Waves from Individual Supermassive Black Hole Binaries in Circular Orbits

Arzoumanian, Z., Brazier, A., Burke-Spolaor, S., Chamberlin, S. J., Chatterjee, S., Cordes, J. M., et al. (2014). NANOGrav Limits on Gravitational Waves from Individual Supermassive Black Hole Binaries in Circular Orbits. The Astrophysical Journal, 794: 141. doi:10.1088/0004-637X/794/2/141.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-50EF-E Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-494D-0
Genre: Journal Article

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Arzoumanian, Z., Author
Brazier, A., Author
Burke-Spolaor, S., Author
Chamberlin, S. J., Author
Chatterjee, S., Author
Cordes, J. M., Author
Demorest, P. B., Author
Deng, X., Author
Dolch, T., Author
Ellis, J. A., Author
Ferdman, R. D., Author
Garver-Daniels, N., Author
Jenet, F., Author
Jones, G., Author
Kaspi, V. M., Author
Koop, M., Author
Lam, M., Author
Lazio, T. J. W., Author
Lommen, A. N., Author
Lorimer, D. R., Author
Luo, J., AuthorLynch, R. S., AuthorMadison, D. R., AuthorMcLaughlin, M., AuthorMcWilliams, S. T., AuthorNice, D. J., AuthorPalliyaguru, N., AuthorPennucci, T. T., AuthorRansom, S. M., AuthorSesana, A.1, Author              Siemens, X., AuthorStairs, I. H., AuthorStinebring, D. R., AuthorStovall, K., AuthorSwiggum, J., AuthorVallisneri, M., Authorvan Haasteren, R., AuthorWang, Y., AuthorZhu, W. W., Author more..
Affiliations:
1Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:24013              

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Free keywords: Astrophysics, Galaxy Astrophysics, astro-ph.GA, Astrophysics, Instrumentation and Methods for Astrophysics, astro-ph.IM,General Relativity and Quantum Cosmology, gr-qc
 Abstract: The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) project currently observes 43 pulsars using the Green Bank and Arecibo radio telescopes. In this work we use a subset of 17 pulsars timed for a span of roughly five years (2005--2010). We analyze these data using standard pulsar timing models, with the addition of time-variable dispersion measure and frequency-variable pulse shape terms. Within the timing data, we perform a search for continuous gravitational waves from individual supermassive black hole binaries in circular orbits using robust frequentist and Bayesian techniques. We find that there is no evidence for the presence of a detectable continuous gravitational wave; however, we can use these data to place the most constraining upper limits to date on the strength of such gravitational waves. Using the full 17 pulsar dataset we place a 95% upper limit on the sky-averaged strain amplitude of $h_0\lesssim 3.8\times 10^{-14}$ at a frequency of 10 nHz. Furthermore, we place 95% \emph{all sky} lower limits on the luminosity distance to such gravitational wave sources finding that the $d_L \gtrsim 425$ Mpc for sources at a frequency of 10 nHz and chirp mass $10^{10}{\rm M}_{\odot}$. We find that for gravitational wave sources near our best timed pulsars in the sky, the sensitivity of the pulsar timing array is increased by a factor of $\sim$4 over the sky-averaged sensitivity. Finally we place limits on the coalescence rate of the most massive supermassive black hole binaries.

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 Dates: 2014-04-042014-05-192014
 Publication Status: Published in print
 Pages: 21 pages, 9 figures. Matches version submitted to ApJ
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1404.1267
URI: http://arxiv.org/abs/1404.1267
DOI: 10.1088/0004-637X/794/2/141
 Degree: -

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Title: The Astrophysical Journal
Source Genre: Journal
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Publ. Info: Chicago, IL : University of Chicago Press for the American Astronomical Society
Pages: - Volume / Issue: 794 Sequence Number: 141 Start / End Page: - Identifier: ISSN: 0004-637X
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/954922828215_3