{"paper":{"title":"A Massive Pulsar in a Compact Relativistic Binary","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR","cond-mat.quant-gas","gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Cees Bassa, David G. Whelan, Ingrid H. Stairs, Jason W. T. Hessels, Joeri van Leeuwen, John Antoniadis, Joris P. W. Verbiest, Marten H. van Kerkwijk, Maura A. McLaughlin, Michael Kramer, Norbert Langer, Norbert Wex, Paulo C. C. Freire, Ryan S. Lynch, Scott M. Ransom, Thomas Driebe, Thomas M. Tauris, Thomas R. Marsh, Timothy T. Pennucci, Victoria M. Kaspi, Vik S. Dhillon, Vladislav I. Kondratiev","submitted_at":"2013-04-25T11:01:50Z","abstract_excerpt":"Many physically motivated extensions to general relativity (GR) predict significant deviations in the properties of spacetime surrounding massive neutron stars. We report the measurement of a 2.01 +/- 0.04 solar mass pulsar in a 2.46-hr orbit with a 0.172 +/- 0.003 solar mass white dwarf. The high pulsar mass and the compact orbit make this system a sensitive laboratory of a previously untested strong-field gravity regime. Thus far, the observed orbital decay agrees with GR, supporting its validity even for the extreme conditions present in the system. The resulting constraints on deviations s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.6875","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":""},"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"}