{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:YR7DW4A5LVOBODE3WC3C7442VK","short_pith_number":"pith:YR7DW4A5","schema_version":"1.0","canonical_sha256":"c47e3b701d5d5c170c9bb0b62ff39aaa8bf0679d980c8a485a852a89ec3798e6","source":{"kind":"arxiv","id":"2603.07047","version":3},"attestation_state":"computed","paper":{"title":"New black hole mass calibrations and the fundamental plane of the broad-line region size, luminosity, and velocity","license":"http://creativecommons.org/licenses/by/4.0/","headline":"A three-parameter fundamental plane for broad-line region size, luminosity, and velocity yields new black hole mass estimators that lower previous values by up to 0.5 dex.","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Hojin Cho, Jimin Kim, Jong-Hak Woo, Shu Wang","submitted_at":"2026-03-07T05:55:52Z","abstract_excerpt":"We present a new calibration of the broad-line region (BLR) size-luminosity-velocity relation using a sample of 157 AGNs with reliable Hbeta time-delay (\\lag) measurements from Wang & Woo 2024. By incorporating the Eddington ratio as a third parameter, we effectively correct the systematic offset of high-Eddington AGNs in the traditional BLR size-luminosity relation. The resulting three-parameter fit defines a fundamental plane in the 3-D space of the \\lag, optical luminosity, and Hbeta velocity, with an intrinsic scatter of 0.21 dex. This tight correlation reflects the coupled effects of gas "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":true},"canonical_record":{"source":{"id":"2603.07047","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-03-07T05:55:52Z","cross_cats_sorted":[],"title_canon_sha256":"dd3cf64e6632452fdc9459db58bf228c905f93f1dc01591f9421f27507374e15","abstract_canon_sha256":"c3365a54b7e613a3136509997efdbab5362741106d57ec8cbd26ad5e89c830ae"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-02T02:04:15.775005Z","signature_b64":"cQ+yiGLU31QL6puoIYwFDXj8klecHxNjTnb6gbD5bPuYBgDtUyUvtTpzPyhqRkOEsIa0FuuEZWm7CYgdJs3iAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c47e3b701d5d5c170c9bb0b62ff39aaa8bf0679d980c8a485a852a89ec3798e6","last_reissued_at":"2026-06-02T02:04:15.774483Z","signature_status":"signed_v1","first_computed_at":"2026-06-02T02:04:15.774483Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"New black hole mass calibrations and the fundamental plane of the broad-line region size, luminosity, and velocity","license":"http://creativecommons.org/licenses/by/4.0/","headline":"A three-parameter fundamental plane for broad-line region size, luminosity, and velocity yields new black hole mass estimators that lower previous values by up to 0.5 dex.","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Hojin Cho, Jimin Kim, Jong-Hak Woo, Shu Wang","submitted_at":"2026-03-07T05:55:52Z","abstract_excerpt":"We present a new calibration of the broad-line region (BLR) size-luminosity-velocity relation using a sample of 157 AGNs with reliable Hbeta time-delay (\\lag) measurements from Wang & Woo 2024. By incorporating the Eddington ratio as a third parameter, we effectively correct the systematic offset of high-Eddington AGNs in the traditional BLR size-luminosity relation. The resulting three-parameter fit defines a fundamental plane in the 3-D space of the \\lag, optical luminosity, and Hbeta velocity, with an intrinsic scatter of 0.21 dex. This tight correlation reflects the coupled effects of gas "},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"the new mass estimator substantially changes the cosmic black hole mass density and the growth of black hole seeds in the early universe","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"That the Eddington ratio correction derived from the 157-AGN sample fully removes systematic offsets and applies to the broader AGN population without residual selection or measurement biases","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"A new fundamental plane for AGN BLR size-luminosity-velocity incorporating Eddington ratio yields single-epoch black hole mass estimators with 0.21 dex scatter, reducing prior overestimates by up to 0.5 dex.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"A three-parameter fundamental plane for broad-line region size, luminosity, and velocity yields new black hole mass estimators that lower previous values by up to 0.5 dex.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"61bb703983644c5971216da1b47acadfb2c7fe5415a0b40c824648f2019f23ac"},"source":{"id":"2603.07047","kind":"arxiv","version":3},"verdict":{"id":"7ef8026e-6d65-4374-8f3b-052dd500141f","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-15T15:17:39.297152Z","strongest_claim":"the new mass estimator substantially changes the cosmic black hole mass density and the growth of black hole seeds in the early universe","one_line_summary":"A new fundamental plane for AGN BLR size-luminosity-velocity incorporating Eddington ratio yields single-epoch black hole mass estimators with 0.21 dex scatter, reducing prior overestimates by up to 0.5 dex.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"That the Eddington ratio correction derived from the 157-AGN sample fully removes systematic offsets and applies to the broader AGN population without residual selection or measurement biases","pith_extraction_headline":"A three-parameter fundamental plane for broad-line region size, luminosity, and velocity yields new black hole mass estimators that lower previous values by up to 0.5 dex."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2603.07047/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":2,"snapshot_sha256":"4f6b014fd3dbcd9b9d192e0ab633d28b8d6acd0d0e835cd60049d8108f0504db"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2603.07047","created_at":"2026-06-02T02:04:15.774551+00:00"},{"alias_kind":"arxiv_version","alias_value":"2603.07047v3","created_at":"2026-06-02T02:04:15.774551+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2603.07047","created_at":"2026-06-02T02:04:15.774551+00:00"},{"alias_kind":"pith_short_12","alias_value":"YR7DW4A5LVOB","created_at":"2026-06-02T02:04:15.774551+00:00"},{"alias_kind":"pith_short_16","alias_value":"YR7DW4A5LVOBODE3","created_at":"2026-06-02T02:04:15.774551+00:00"},{"alias_kind":"pith_short_8","alias_value":"YR7DW4A5","created_at":"2026-06-02T02:04:15.774551+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2604.24901","citing_title":"Can BLR line profile shape improve single-epoch black hole mass estimates?","ref_index":62,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":2,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/YR7DW4A5LVOBODE3WC3C7442VK","json":"https://pith.science/pith/YR7DW4A5LVOBODE3WC3C7442VK.json","graph_json":"https://pith.science/api/pith-number/YR7DW4A5LVOBODE3WC3C7442VK/graph.json","events_json":"https://pith.science/api/pith-number/YR7DW4A5LVOBODE3WC3C7442VK/events.json","paper":"https://pith.science/paper/YR7DW4A5"},"agent_actions":{"view_html":"https://pith.science/pith/YR7DW4A5LVOBODE3WC3C7442VK","download_json":"https://pith.science/pith/YR7DW4A5LVOBODE3WC3C7442VK.json","view_paper":"https://pith.science/paper/YR7DW4A5","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2603.07047&json=true","fetch_graph":"https://pith.science/api/pith-number/YR7DW4A5LVOBODE3WC3C7442VK/graph.json","fetch_events":"https://pith.science/api/pith-number/YR7DW4A5LVOBODE3WC3C7442VK/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YR7DW4A5LVOBODE3WC3C7442VK/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YR7DW4A5LVOBODE3WC3C7442VK/action/storage_attestation","attest_author":"https://pith.science/pith/YR7DW4A5LVOBODE3WC3C7442VK/action/author_attestation","sign_citation":"https://pith.science/pith/YR7DW4A5LVOBODE3WC3C7442VK/action/citation_signature","submit_replication":"https://pith.science/pith/YR7DW4A5LVOBODE3WC3C7442VK/action/replication_record"}},"created_at":"2026-06-02T02:04:15.774551+00:00","updated_at":"2026-06-02T02:04:15.774551+00:00"}