{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:ZZYITQK62XJIMPYMHZ5OEGPS3H","short_pith_number":"pith:ZZYITQK6","schema_version":"1.0","canonical_sha256":"ce7089c15ed5d2863f0c3e7ae219f2d9f3e0cbbfe023402066795f19c38d20f5","source":{"kind":"arxiv","id":"2012.12790","version":5},"attestation_state":"computed","paper":{"title":"Properties of Ultralight Bosons from Spins of Heavy Quasars via Superradiance","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.HE","gr-qc","hep-th"],"primary_cat":"hep-ph","authors_text":"Abraham Loeb, Caner Unal, Fabio Pacucci","submitted_at":"2020-12-23T16:47:37Z","abstract_excerpt":"The mass and the spin of accreting and jetted black holes, at the center of Active Galactic Nuclei (AGNs), can be probed by analyzing their electromagnetic spectra. For this purpose, we use the Spin-Modified Fundamental Plane of black hole activity, which non-linearly connects the following four variables (in the source frame): radio luminosity, X-ray or optical luminosity (via the [OIII] emission line), black hole mass and spin. Taking into account the uncertainties in luminosity measurements, conversion factors, relativistic beaming and physical properties of the AGN system, we derive lower "},"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":false},"canonical_record":{"source":{"id":"2012.12790","kind":"arxiv","version":5},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-12-23T16:47:37Z","cross_cats_sorted":["astro-ph.CO","astro-ph.HE","gr-qc","hep-th"],"title_canon_sha256":"b09c14c560feba3136a53efc96490fbab6cf0105485f1f8813e7e02e7621d92a","abstract_canon_sha256":"e190863f6abdbd4c8df2a72529accb99504a817cac2887283359cc6f348dba04"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:30:50.095997Z","signature_b64":"d2zwSZIMOyrzuLtq2Eqr36LRkBkXY6ubGAr5FE1ost9dvNVpCASa+vB17JJTFSAIibMhL2geHKppwresMkOLDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ce7089c15ed5d2863f0c3e7ae219f2d9f3e0cbbfe023402066795f19c38d20f5","last_reissued_at":"2026-07-05T10:30:50.095293Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:30:50.095293Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Properties of Ultralight Bosons from Spins of Heavy Quasars via Superradiance","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.HE","gr-qc","hep-th"],"primary_cat":"hep-ph","authors_text":"Abraham Loeb, Caner Unal, Fabio Pacucci","submitted_at":"2020-12-23T16:47:37Z","abstract_excerpt":"The mass and the spin of accreting and jetted black holes, at the center of Active Galactic Nuclei (AGNs), can be probed by analyzing their electromagnetic spectra. For this purpose, we use the Spin-Modified Fundamental Plane of black hole activity, which non-linearly connects the following four variables (in the source frame): radio luminosity, X-ray or optical luminosity (via the [OIII] emission line), black hole mass and spin. Taking into account the uncertainties in luminosity measurements, conversion factors, relativistic beaming and physical properties of the AGN system, we derive lower "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.12790","kind":"arxiv","version":5},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2012.12790/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":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"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":"2012.12790","created_at":"2026-07-05T10:30:50.095414+00:00"},{"alias_kind":"arxiv_version","alias_value":"2012.12790v5","created_at":"2026-07-05T10:30:50.095414+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.12790","created_at":"2026-07-05T10:30:50.095414+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZZYITQK62XJI","created_at":"2026-07-05T10:30:50.095414+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZZYITQK62XJIMPYM","created_at":"2026-07-05T10:30:50.095414+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZZYITQK6","created_at":"2026-07-05T10:30:50.095414+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":5,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2607.01317","citing_title":"No Evidence for Superradiant Axions in LIGO-Virgo-KAGRA GWTC-5 Binary Black Hole Spins","ref_index":43,"is_internal_anchor":false},{"citing_arxiv_id":"2607.01333","citing_title":"Axion Misalignment Across First-Order Phase Transitions","ref_index":62,"is_internal_anchor":false},{"citing_arxiv_id":"2602.18392","citing_title":"RadioAxion results on the search for axion dark matter under Gran Sasso","ref_index":48,"is_internal_anchor":false},{"citing_arxiv_id":"2412.20932","citing_title":"Weak nuclear decays deep-underground as a probe of axion dark matter","ref_index":62,"is_internal_anchor":false},{"citing_arxiv_id":"2509.25305","citing_title":"$\\phi$-Dwarfs: White Dwarfs probe Quadratically Coupled Scalars","ref_index":122,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ZZYITQK62XJIMPYMHZ5OEGPS3H","json":"https://pith.science/pith/ZZYITQK62XJIMPYMHZ5OEGPS3H.json","graph_json":"https://pith.science/api/pith-number/ZZYITQK62XJIMPYMHZ5OEGPS3H/graph.json","events_json":"https://pith.science/api/pith-number/ZZYITQK62XJIMPYMHZ5OEGPS3H/events.json","paper":"https://pith.science/paper/ZZYITQK6"},"agent_actions":{"view_html":"https://pith.science/pith/ZZYITQK62XJIMPYMHZ5OEGPS3H","download_json":"https://pith.science/pith/ZZYITQK62XJIMPYMHZ5OEGPS3H.json","view_paper":"https://pith.science/paper/ZZYITQK6","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2012.12790&json=true","fetch_graph":"https://pith.science/api/pith-number/ZZYITQK62XJIMPYMHZ5OEGPS3H/graph.json","fetch_events":"https://pith.science/api/pith-number/ZZYITQK62XJIMPYMHZ5OEGPS3H/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZZYITQK62XJIMPYMHZ5OEGPS3H/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZZYITQK62XJIMPYMHZ5OEGPS3H/action/storage_attestation","attest_author":"https://pith.science/pith/ZZYITQK62XJIMPYMHZ5OEGPS3H/action/author_attestation","sign_citation":"https://pith.science/pith/ZZYITQK62XJIMPYMHZ5OEGPS3H/action/citation_signature","submit_replication":"https://pith.science/pith/ZZYITQK62XJIMPYMHZ5OEGPS3H/action/replication_record"}},"created_at":"2026-07-05T10:30:50.095414+00:00","updated_at":"2026-07-05T10:30:50.095414+00:00"}