Journal Article

PUBDB-2022-06827

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png A gamma-ray pulsar timing array constrains the nanohertz gravitational wave background

Liu, Y. ; Ajello, M. ; Atwood, W. B. ; Baldini, L. ; Ballet, J. ; Barbiellini, G. ; Bastieri, D. ; Bellazzini, R. ; Berretta, A. ; Bhattacharyya, B. ; Bissaldi, E. ; Blandford, R. D. ; Bloom, E. ; Bonino, R. ; Bruel, P. ; Bühler, R.DESY* ; Burns, E. ; Buson, S. ; Cameron, R. A. ; Caraveo, P. A. ; Cavazzuti, E. ; Cibrario, N. ; Ciprini, S. ; Clark, C. J. ; Cognard, I. ; Coronado-Blázquez, J. ; Crnogorcevic, M. ; Cromartie, H. ; Crowter, K. ; Cutini, S. ; D'Ammando, F. ; Gaetano, S. D. ; Palma, F. d. ; Digel, S. W. ; Lalla, N. D. ; Fana Dirirsa, F. ; Venere, L. D. ; Domínguez, A. ; Ferrara, E. C. ; Fiori, A. ; Franckowiak, A.Extern* ; Fukazawa, Y. ; Funk, S. ; Fusco, P. ; Gammaldi, V. ; Gargano, F. ; Gasparrini, D. ; Giglietto, N. ; Giordano, F. ; Giroletti, M. ; Green, D. ; Grenier, I. A. ; Guillemot, L. ; Guiriec, S. ; Gustafsson, M. ; Harding, A. K. ; Hays, E. ; Hewitt, J. W. ; Horan, D. ; Hou, X. ; Jóhannesson, G. ; Keith, M. J. ; Kerr, M. ; Kramer, M. ; Kuss, M. ; Larsson, S. ; Latronico, L. ; Li, J. ; Longo, F. ; Loparco, F. ; Lovellette, M. N. ; Lubrano, P. ; Maldera, S. ; Manfreda, A. ; Martí-Devesa, G. ; Mazziotta, M. N. ; Mereu, I. ; Michelson, P. F. ; Mirabal, N. ; Mitthumsiri, W. ; Mizuno, T. ; Monzani, M. E. ; Morselli, A. ; Negro, M. ; Nieder, L. ; Ojha, R. ; Omodei, N. ; Orienti, M. ; Orlando, E. ; Ormes, J. F. ; Paneque, D. ; Parthasarathy, A. ; Pei, Z. ; Persic, M. ; Pesce-Rollins, M. ; Pillera, R. ; Poon, H. ; Porter, T. A. ; Principe, G. ; Racusin, J. L. ; Rainò, S. ; Rando, R. ; Rani, B. ; Ransom, S. M. ; Ray, P. S. ; Razzano, M. ; Razzaque, S. ; Reimer, A. ; Reimer, O. ; Roy, J. ; Sánchez-Conde, M. ; Parkinson, P. M. S. ; Scargle, J. ; Scotton, L. ; Serini, D. ; Sgrò, C. ; Siskind, E. J. ; Smith, D. A. ; Spandre, G. ; Spiewak, R. ; Spinelli, P. ; Stairs, I. ; Suson, D. J. ; Swihart, S. J. ; Tabassum, S. ; Thayer, J. B. ; Theureau, G. ; Torres, D. F. ; Troja, E. ; Valverde, J. ; Wadiasingh, Z. ; Wood, K. ; Zaharijas, G. ; Fermi-LAT Collaboration (Collaboration author)

2022
Assoc. Washington, DC

This record in other databases:          

Please use a persistent id in citations: doi:10.1126/science.abm3231

Report No.: arXiv:2204.05226

Abstract: After large galaxies merge, their central supermassive black holes are expected to form binary systems. Their orbital motion should generate a gravitational wave background (GWB) at nanohertz frequencies. Searches for this background use pulsar timing arrays, which perform long-term monitoring of millisecond pulsars at radio wavelengths. We used 12.5 years of Fermi Large Area Telescope data to form a gamma-ray pulsar timing array. Results from 35 bright gamma-ray pulsars place a 95% credible limit on the GWB characteristic strain of 1.0 × 10$^{−14}$ at a frequency of 1 year$^{–1}$. The sensitivity is expected to scale with tobs, the observing time span, as $t^{−13/6}_{obs}$. This direct measurement provides an independent probe of the GWB while offering a check on radio noise models.

Keyword(s): gravitational radiation: background ; pulsar ; gamma ray ; binary ; noise ; monitoring ; black hole ; radio wave ; GLAST ; galaxy

Note: ISSN 1095-9203 not unique: **3 hits**.3 figures in the main text. 3 figures and 8 tables are in the supplementary material Waiting for fulltext

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Contributing Institute(s):

1. Astroteilchenphysik (ZEU-EXP/AT)

Research Program(s):

1. 613 - Matter and Radiation from the Universe (POF4-613) (POF4-613)

Experiment(s):

1. The Fermi Large Area Telescope

Appears in the scientific report 2022

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint Liu, Y. ; Ajello, M. ; Atwood, W. B. ; et al
A gamma-ray pulsar timing array constrains the nanohertz gravitational wave background
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