The NANOGrav 15 yr Data Set: Evidence for a Gravitational-wave Background
University of Wisconsin–Milwaukee · Newcastle University · +60 more institutions
Abstract
Abstract We report multiple lines of evidence for a stochastic signal that is correlated among 67 pulsars from the 15 yr pulsar timing data set collected by the North American Nanohertz Observatory for Gravitational Waves. The correlations follow the Hellings–Downs pattern expected for a stochastic gravitational-wave background. The presence of such a gravitational-wave background with a power-law spectrum is favored over a model with only independent pulsar noises with a Bayes factor in excess of 10 14 , and this same model is favored over an uncorrelated common power-law spectrum model with Bayes factors of 200–1000, depending on spectral modeling choices. We have built a statistical background distribution…
Citation impact
- FWCI
- 245.08
- Percentile
- 100%
- References
- 142
Authors
114Topics & keywords
- Physics
- Algorithm
- Data set
- Artificial intelligence
- Computer science
Funding
- NSNational Science FoundationAwards: 2202388, 2146016, 1430284, 1726534, AST-1744119, AST-1909933, 1815664, 1847938, 2114721, DGE-2139292, 2011772, ACI-1548562, -1548562, 1548562, DGE-1745301, 2106552, 1458952, 2139292, 1744119, 2207267, 2009425, PHY-2011772, 2009468, CAREER, 1745301, 1928147, 2007993, AST-2202388, 2020265, 1909933, 1748958, ACI-1928147, AST-2106552
- NANational Aeronautics and Space AdministrationAwards: S-15633Y, 80GSFC21M0002, ACI-1548562, 80NM0018D0004, NAS5-26555
- APAlfred P. Sloan Foundation
- SFSimons FoundationAwards: PHY-1748958, NSF PHY-1748958, 80GSFC21M0002
- JTJohn Templeton Foundation
- GAGordon and Betty Moore FoundationAwards: NSF PHY-1748958, PHY-1748958, DGE-1745301, 2114721
- BFBrinson Foundation
- RCResearch Corporation for Science AdvancementAwards: ACI-1548562, 27553
- VUVanderbilt University
- CICalifornia Institute of TechnologyAward: 80NM0018D0004
- TTTexas Tech University
- UOUniversity of Michigan
- CICanadian Institute for Advanced Research
- UOUniversity of Washington
- UOUniversity of Central FloridaAward: AST-1744119
- WVWest Virginia University
- OSOregon State University
- STSpace Telescope Science InstituteAwards: NAS5-26555, 26555
- AUAssociated Universities
- FHFlatiron Health
- DFDeutsche ForschungsgemeinschaftAwards: NSF PHY-1748958, EXC 2121 Quantum Universe-390833306, EXC 2121, 390833306
- UOUniversity of Toronto
- IAIsrael Academy of Sciences and Humanities
- CFCouncil for Higher Education
- ELEötvös Loránd Tudományegyetem
- JPJet Propulsion LaboratoryAwards: 80NM0018D0004, 80GSFC21M0002
- GSGoddard Space Flight CenterAwards: NAS5-26555, 80GSFC21M0002
- COCollege of Science, Oregon State University
- NSNatural Sciences and Engineering Research Council of CanadaAward: PHY-1748958
- SAScience and Technology Facilities CouncilAwards: NSF PHY-1748958, ST/W000946/1, ST/W000946/1
- OOOffice of Naval ResearchAward: ACI-1548562