{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:V4GOL7KX73HTXVZAEGBSOWYNZH","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"cfe9d96e42c56ef08344bfa30d6e129cccdacfd08443781dbc993568aea2054e","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-05-16T06:55:19Z","title_canon_sha256":"99c0f52ca6baeff6b494ad8bd91bd78a67f2d79faa0237bc096b4d21ffe02c4e"},"schema_version":"1.0","source":{"id":"1705.05553","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.05553","created_at":"2026-05-18T00:40:03Z"},{"alias_kind":"arxiv_version","alias_value":"1705.05553v1","created_at":"2026-05-18T00:40:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.05553","created_at":"2026-05-18T00:40:03Z"},{"alias_kind":"pith_short_12","alias_value":"V4GOL7KX73HT","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"V4GOL7KX73HTXVZA","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"V4GOL7KX","created_at":"2026-05-18T12:31:49Z"}],"graph_snapshots":[{"event_id":"sha256:221e6eed80d67ce3e635eb42bda7e017486bf7ec571af60416be415a1c501eac","target":"graph","created_at":"2026-05-18T00:40:03Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We report the discovery of a binary composed of two brown dwarfs, based on the analysis of the microlensing event OGLE-2016-BLG-1469. Thanks to detection of both finite-source and microlens-parallax effects, we are able to measure both the masses $M_1\\sim 0.05\\ M_\\odot$, $M_2\\sim 0.01\\ M_\\odot$, and distance $D_{\\rm L} \\sim 4.5$ kpc, as well as the projected separation $a_\\perp \\sim 0.33$ au. This is the third brown-dwarf binary detected using the microlensing method, demonstrating the usefulness of microlensing in detecting field brown-dwarf binaries with separations less than 1 au.","authors_text":"A. Bhattacharya, A. Fukui, A. Gould, A. Sharan, A. Udalski, A. Yonehara, B.-G. Park, C. Han, C. H. Ling, C.-U. Lee, D.-J. Kim, D. J. Sullivan, D. P. Bennett, D. Suzuki, F. Abe, H. Oyokawa, I. A. Bond, I.-G. Shin, I. Soszy\\'nski, J. C. Yee, J. Skowron R. Poleski, K. Masuda, K. Ohnishi, K. Ulaczyk, M. C. A. Li, M. D. Albrow, M. Donachie, M. Freeman, M. K. Szyma\\'nski, M. Nagakane, M. Pawlak, N. J. Rattenbury, N. Koshimoto, P. J. Tristram, P. Mr\\'oz, P. Pietrukowicz, R. Barry, S.-J. Chung, S. Koz{\\l}owski, S.-L. Kim, S.-M. Cha, To. Saito, T. Sumi, T. Yamada, W. Zhu, Y. Asakura, Y. Hirao, Y.-H. Ryu, Y. Itow, Y. K. Jung, Y. Lee, Y. Matsubara, Y. Muraki","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-05-16T06:55:19Z","title":"OGLE-2016-BLG-1469L: Microlensing Binary Composed of Brown Dwarfs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.05553","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:75df3e1227714f8df7997395e495aa47fb99775ba0da0262de3903fcf89fabf8","target":"record","created_at":"2026-05-18T00:40:03Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"cfe9d96e42c56ef08344bfa30d6e129cccdacfd08443781dbc993568aea2054e","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-05-16T06:55:19Z","title_canon_sha256":"99c0f52ca6baeff6b494ad8bd91bd78a67f2d79faa0237bc096b4d21ffe02c4e"},"schema_version":"1.0","source":{"id":"1705.05553","kind":"arxiv","version":1}},"canonical_sha256":"af0ce5fd57fecf3bd7202183275b0dc9d132761c4a9375e79c5d6bafbc0e6cf4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"af0ce5fd57fecf3bd7202183275b0dc9d132761c4a9375e79c5d6bafbc0e6cf4","first_computed_at":"2026-05-18T00:40:03.573872Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:40:03.573872Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RFewkAggrJBuPgmjdCq6HOnUKOjaARax8mZa2h5aFDFYfdafKinY2ExkM4qoOqML/MiEKYP7H6ws1e1XaDldDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:40:03.574388Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.05553","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:75df3e1227714f8df7997395e495aa47fb99775ba0da0262de3903fcf89fabf8","sha256:221e6eed80d67ce3e635eb42bda7e017486bf7ec571af60416be415a1c501eac"],"state_sha256":"7f514bb2d7c4084d959a41aa100de0f3dc72cdadb57e39d4792d44e1de8a415f"}