{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:WRMBS2SJGV7C4RTOOIKUCQOSES","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":"a83987efeaf0a42141c4e6b1f4148cb7131cf393b4cf7784ee79fc42cf8989da","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-12-06T19:59:01Z","title_canon_sha256":"6ed1d69ba1d26727bd267a4a3df788c1923f0f1b35006245507df85deececa16"},"schema_version":"1.0","source":{"id":"1512.01825","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.01825","created_at":"2026-05-18T01:21:51Z"},{"alias_kind":"arxiv_version","alias_value":"1512.01825v1","created_at":"2026-05-18T01:21:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.01825","created_at":"2026-05-18T01:21:51Z"},{"alias_kind":"pith_short_12","alias_value":"WRMBS2SJGV7C","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"WRMBS2SJGV7C4RTO","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"WRMBS2SJ","created_at":"2026-05-18T12:29:47Z"}],"graph_snapshots":[{"event_id":"sha256:f329376a7541b1816a4caeb27786243e4955167c090d6dccf5ceec0c3b55111c","target":"graph","created_at":"2026-05-18T01:21:51Z","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":"One of the proposed explanations for the broad, double-peaked Balmer emission lines observed in the spectra of some active galactic nuclei (AGNs) is that they are associated with sub-parsec supermassive black hole (SMBH) binaries. Here, we test the binary broad-line region hypothesis through several decades of monitoring of the velocity structure of double-peaked H-alpha emission lines in 13 low-redshift, mostly radio-loud AGNs. This is a much larger set of objects compared to an earlier test by Eracleous et al. (1997) and we use much longer time series for the three objects studied in that pa","authors_text":"Jia Liu (Columbia), Jules P. Halpern (Columbia), Michael Eracleous (PSU)","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-12-06T19:59:01Z","title":"A Radial Velocity Test for Supermassive Black Hole Binaries as an Explanation for Broad, Double-Peaked Emission Lines in Active Galactic Nuclei"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.01825","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":"sha256:05b310014e6effe13b1ba43758724370961f4b95d9af6730c261e8f8bc289635","target":"record","created_at":"2026-05-18T01:21:51Z","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":"a83987efeaf0a42141c4e6b1f4148cb7131cf393b4cf7784ee79fc42cf8989da","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-12-06T19:59:01Z","title_canon_sha256":"6ed1d69ba1d26727bd267a4a3df788c1923f0f1b35006245507df85deececa16"},"schema_version":"1.0","source":{"id":"1512.01825","kind":"arxiv","version":1}},"canonical_sha256":"b458196a49357e2e466e72154141d224937e2b1a1adda2895615699df467947e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b458196a49357e2e466e72154141d224937e2b1a1adda2895615699df467947e","first_computed_at":"2026-05-18T01:21:51.177427Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:21:51.177427Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"U7/n0OHAT+F8DW6cSyIaoirkhzKSyEfAmle1UQggzpi+FhuJ4Uuzj6X4MWT/DordedlXXfzrqShvmYq/L5zJAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:21:51.178062Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.01825","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:05b310014e6effe13b1ba43758724370961f4b95d9af6730c261e8f8bc289635","sha256:f329376a7541b1816a4caeb27786243e4955167c090d6dccf5ceec0c3b55111c"],"state_sha256":"6f4cedde1c2102519d0a1ba7d75e95d83f5f311263031fe24123a89e1a2a37f2"}