{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:2F2CJQNBF526JAPLNQPWSF3JKE","short_pith_number":"pith:2F2CJQNB","schema_version":"1.0","canonical_sha256":"d17424c1a12f75e481eb6c1f69176951147c0056f9a914fb40d5b4d1f9c645d4","source":{"kind":"arxiv","id":"2011.01954","version":1},"attestation_state":"computed","paper":{"title":"Magnetic flux inversion in a peculiar changing look AGN","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Jason Dexter, Mitchell C. Begelman, Nicolas Scepi","submitted_at":"2020-11-03T19:00:33Z","abstract_excerpt":"We argue that the changing-look event in the active galactic nucleus 1ES 1927+654, followed by a dip of 3 orders of magnitude in the X-ray luminosity, is controlled by a change in the accretion rate and an inversion of magnetic flux in a magnetically arrested disk (MAD). Before the changing-look event, strong magnetic flux on the black hole powers X-ray emission via the Blandford-Znajek process while the UV emission is produced by a radiatively inefficient magnetized disk. An advection event, bringing flux of the opposite polarity, propagates inward leading, first, to a rise in the UV/optical "},"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":"2011.01954","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-11-03T19:00:33Z","cross_cats_sorted":[],"title_canon_sha256":"ee0d330469759b718328a6af1ee14d04955fd55d4e98033821ea5ed414273359","abstract_canon_sha256":"329e54242dbaae970acb6622093cc46b834e94db16c89461092d2a391551b636"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:07:50.834425Z","signature_b64":"s+8DCM0astog1hAJOf3hRzvh3MLSzOuXaDv7mKKAKk3ShliaUzeQR+A6m5ZUtQu0ICNg0Eb9iRkrwxKRYFBkAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d17424c1a12f75e481eb6c1f69176951147c0056f9a914fb40d5b4d1f9c645d4","last_reissued_at":"2026-07-05T02:07:50.834071Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:07:50.834071Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Magnetic flux inversion in a peculiar changing look AGN","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Jason Dexter, Mitchell C. Begelman, Nicolas Scepi","submitted_at":"2020-11-03T19:00:33Z","abstract_excerpt":"We argue that the changing-look event in the active galactic nucleus 1ES 1927+654, followed by a dip of 3 orders of magnitude in the X-ray luminosity, is controlled by a change in the accretion rate and an inversion of magnetic flux in a magnetically arrested disk (MAD). Before the changing-look event, strong magnetic flux on the black hole powers X-ray emission via the Blandford-Znajek process while the UV emission is produced by a radiatively inefficient magnetized disk. An advection event, bringing flux of the opposite polarity, propagates inward leading, first, to a rise in the UV/optical "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.01954","kind":"arxiv","version":1},"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/2011.01954/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":"2011.01954","created_at":"2026-07-05T02:07:50.834127+00:00"},{"alias_kind":"arxiv_version","alias_value":"2011.01954v1","created_at":"2026-07-05T02:07:50.834127+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.01954","created_at":"2026-07-05T02:07:50.834127+00:00"},{"alias_kind":"pith_short_12","alias_value":"2F2CJQNBF526","created_at":"2026-07-05T02:07:50.834127+00:00"},{"alias_kind":"pith_short_16","alias_value":"2F2CJQNBF526JAPL","created_at":"2026-07-05T02:07:50.834127+00:00"},{"alias_kind":"pith_short_8","alias_value":"2F2CJQNB","created_at":"2026-07-05T02:07:50.834127+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2607.05246","citing_title":"The emergence of X-ray emission lines during relativistic radio-jet formation in the changing-look active galactic nucleus 1ES 1927+654","ref_index":61,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/2F2CJQNBF526JAPLNQPWSF3JKE","json":"https://pith.science/pith/2F2CJQNBF526JAPLNQPWSF3JKE.json","graph_json":"https://pith.science/api/pith-number/2F2CJQNBF526JAPLNQPWSF3JKE/graph.json","events_json":"https://pith.science/api/pith-number/2F2CJQNBF526JAPLNQPWSF3JKE/events.json","paper":"https://pith.science/paper/2F2CJQNB"},"agent_actions":{"view_html":"https://pith.science/pith/2F2CJQNBF526JAPLNQPWSF3JKE","download_json":"https://pith.science/pith/2F2CJQNBF526JAPLNQPWSF3JKE.json","view_paper":"https://pith.science/paper/2F2CJQNB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2011.01954&json=true","fetch_graph":"https://pith.science/api/pith-number/2F2CJQNBF526JAPLNQPWSF3JKE/graph.json","fetch_events":"https://pith.science/api/pith-number/2F2CJQNBF526JAPLNQPWSF3JKE/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2F2CJQNBF526JAPLNQPWSF3JKE/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2F2CJQNBF526JAPLNQPWSF3JKE/action/storage_attestation","attest_author":"https://pith.science/pith/2F2CJQNBF526JAPLNQPWSF3JKE/action/author_attestation","sign_citation":"https://pith.science/pith/2F2CJQNBF526JAPLNQPWSF3JKE/action/citation_signature","submit_replication":"https://pith.science/pith/2F2CJQNBF526JAPLNQPWSF3JKE/action/replication_record"}},"created_at":"2026-07-05T02:07:50.834127+00:00","updated_at":"2026-07-05T02:07:50.834127+00:00"}