{"paper":{"title":"Total gravitational mass of the Galactic Double Neutron Star systems: evidence for a bimodal distribution","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Da-Ming Wei, Jin-Liang Jiang, Xiang Li, Yi-Zhong Fan, Yong-Jia Huang, Zhi-Ping Jin","submitted_at":"2018-04-09T16:59:40Z","abstract_excerpt":"So far, in total 15 double neutron star systems (DNSs) with a reliable measurement of the total gravitational mass ($M_{\\rm T}$) have been detected in the Galaxy. In this work we study the distribution of $M_{\\rm T}$. The data prefer the double Gaussian distribution over a single Gaussian distribution and the low and high mass populations center at $M_{\\rm T}\\sim 2.58M_\\odot$ and $\\sim 2.72M_\\odot$, respectively. The progenitor stars of GW170817 have a $M_{\\rm T}=2.74^{+0.04}_{-0.01}M_\\odot$, falling into the high mass population. With a local neutron star merger rate of $\\sim 10^{3}~{\\rm Gpc^"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.03101","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"}