{"paper":{"title":"A Precise Distance to the Host Galaxy of the Binary Neutron Star Merger GW170817 Using Surface Brightness Fluctuations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"A. Grado, A. J. Levan, A. S. Fruchter, D. E. Holz, E. Berger, E. Brocato, G. Raimondo, I. Mandel, J. B. Jensen, J. D. Lyman, J. Hjorth, J. P. Blakeslee, K. D. Alexander, M. Branchesi, Michele Cantiello, M. Nicholl, N. R. Tanvir, P. D'Avanzo, P. K. Blanchard, P. K. G. Williams, P. S. Cowperthwaite, R. Chornock, R. Margutti, S. Covino, T. Eftekhari, V. A. Villar, W. Fong, Z. Cano","submitted_at":"2018-01-18T15:02:58Z","abstract_excerpt":"The joint detection of gravitational waves and electromagnetic radiation from the binary neutron star (BNS) merger GW170817 has provided unprecedented insight into a wide range of physical processes: heavy element synthesis via the $r$-process; the production of relativistic ejecta; the equation of state of neutron stars and the nature of the merger remnant; the binary coalescence timescale; and a measurement of the Hubble constant via the \"standard siren\" technique. In detail, all of these results depend on the distance to the host galaxy of the merger event, NGC4993. In this paper we measure"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.06080","kind":"arxiv","version":2},"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"}