{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:D2MD2FMJ7QMHBPYPLXF55JYGQY","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":"e83b9956e3fd688735e932a81381800fba9dca57610dc5f3dde0be3361c2c1a5","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-07-01T18:00:04Z","title_canon_sha256":"ca341d952cf367a7c4ce536d9230ad50b3a3dd67b59693f735f5a31b0aed1a93"},"schema_version":"1.0","source":{"id":"2207.00598","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.00598","created_at":"2026-07-05T05:25:03Z"},{"alias_kind":"arxiv_version","alias_value":"2207.00598v2","created_at":"2026-07-05T05:25:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.00598","created_at":"2026-07-05T05:25:03Z"},{"alias_kind":"pith_short_12","alias_value":"D2MD2FMJ7QMH","created_at":"2026-07-05T05:25:03Z"},{"alias_kind":"pith_short_16","alias_value":"D2MD2FMJ7QMHBPYP","created_at":"2026-07-05T05:25:03Z"},{"alias_kind":"pith_short_8","alias_value":"D2MD2FMJ","created_at":"2026-07-05T05:25:03Z"}],"graph_snapshots":[{"event_id":"sha256:93ec2e02a7036d57c3c404e795f289466ce19355d4a9d97da233a8d3b1d8b087","target":"graph","created_at":"2026-07-05T05:25:03Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2207.00598/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report periodic oscillations in the 15-year long optical light curve of the gravitationally lensed quasar QJ0158-4325. The signal is enhanced during a high magnification microlensing event undergone by the fainter lensed image of the quasar, between 2003 and 2010. We measure a period of $P_{o}=172.6\\pm0.9$ days. We explore four scenarios to explain the origin of the periodicity: 1- the high magnification microlensing event is due to a binary star in the lensing galaxy, 2- QJ0158-4325 contains a massive binary black hole system in its final dynamical stage before merging, 3- the quasar accre","authors_text":"C. Dalang, C. Lemon, D. Sluse, E. Paic, F. Courbin, J. H. H. Chan, M. Millon","cross_cats":["astro-ph.CO","astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-07-01T18:00:04Z","title":"Evidence for a milliparsec-separation Supermassive Binary Black Hole with quasar microlensing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.00598","kind":"arxiv","version":2},"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":"sha256:5be7c0934160938cf8b7dd12847b9f49600765a2bfa5eaaf1bf9e561fd0df7d1","target":"record","created_at":"2026-07-05T05:25:03Z","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":"e83b9956e3fd688735e932a81381800fba9dca57610dc5f3dde0be3361c2c1a5","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-07-01T18:00:04Z","title_canon_sha256":"ca341d952cf367a7c4ce536d9230ad50b3a3dd67b59693f735f5a31b0aed1a93"},"schema_version":"1.0","source":{"id":"2207.00598","kind":"arxiv","version":2}},"canonical_sha256":"1e983d1589fc1870bf0f5dcbdea7068633c5bcd20d7722f0fc2f379766a88366","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1e983d1589fc1870bf0f5dcbdea7068633c5bcd20d7722f0fc2f379766a88366","first_computed_at":"2026-07-05T05:25:03.448526Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:25:03.448526Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GwRGkoK7zge6xlqnqXs3r9D91n1yryAb4g1G92OuxWJ+0Koyz7ZbWsIKA2viANQHOGxA+BtAVHS+Qx7MxBMcDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T05:25:03.448943Z","signed_message":"canonical_sha256_bytes"},"source_id":"2207.00598","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5be7c0934160938cf8b7dd12847b9f49600765a2bfa5eaaf1bf9e561fd0df7d1","sha256:93ec2e02a7036d57c3c404e795f289466ce19355d4a9d97da233a8d3b1d8b087"],"state_sha256":"99f2970bc7be88802b6a13ad5305abb003b47da48a206f7466ffb2b064e91de2"}