{"paper":{"title":"The international pulsar timing array project: using pulsars as a gravitational wave detector","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"A. Archibald, A. Hotan, A. Jessner, A. Lommen, A. Lyne, A. Possenti, A. Sesana, B. Stappers, C. Jordan, D. Backer, D. Champion, D. Lorimer, D. Nice, D. R. B. Yardley, D. Stinebring, F. Jenet, G. Desvignes, G. Hobbs, G. Janssen, G. Theureau, I. Cognard, I. Stairs, J. Cordes, J. Hessels, J. Lazio, J. P. W. Verbiest, J. Reynolds, J. Sarkissian, K. J. Lee, K. Lazaridis, L. Finn, M. Bailes, M. Burgay, M. Gonzalez, M. Kramer, M. McLaughlin, M. Pilia, M. Purver, N. D. R. Bhat, P. Demorest, P. Freire, R. D. Ferdman, R. Lynch, R. Manchester, R. Shannon, R. van Haasteren, S. Burke-Spolaor, S. Oslowski, S. Ransom, S. Sanidas, V. Kaspi, V. Kondratiev, W. Coles, W. van Straten, X. P. You, X. Siemens, Y. Levin, Z. Arzoumanian","submitted_at":"2009-11-27T06:51:07Z","abstract_excerpt":"The International Pulsar Timing Array project combines observations of pulsars from both Northern and Southern hemisphere observatories with the main aim of detecting ultra-low frequency (~10^-9 to 10^-8 Hz) gravitational waves. Here we introduce the project, review the methods used to search for gravitational waves emitted from coalescing supermassive binary black-hole systems in the centres of merging galaxies and discuss the status of the project."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.5206","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0911.5206/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}