{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:6BDDKQABOUCJX25TCKWTZH6IYE","short_pith_number":"pith:6BDDKQAB","schema_version":"1.0","canonical_sha256":"f04635400175049bebb312ad3c9fc8c106170cddc54c757811e5799c3b1801ec","source":{"kind":"arxiv","id":"1904.02197","version":2},"attestation_state":"computed","paper":{"title":"X-ray Photons in the CO 2-1 'Lacuna' of NGC 2110","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"A. Paggi, G. Fabbiano, M. Elvis","submitted_at":"2019-04-03T18:46:18Z","abstract_excerpt":"A recent ALMA study of the Seyfert 2 Active Galactic Nucleus (AGN) NGC 2110 by Rosario et al. (2019) has reported a remarkable lack of CO 2-1 emission from the circumnuclear region, where optical lines and H2 emission are observed, leading to the suggestion of excitation of the molecular clouds by the AGN. Since interaction with X-ray photons could be the cause of this excitation, we have searched the archival Chandra data for corroborating evidence. We report an extra-nuclear ~1'' (~170 pc) feature found in the soft (<1.0 keV) Chandra data of the Seyfert 2 Active Galactic Nucleus (AGN) NGC 21"},"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":"1904.02197","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-03T18:46:18Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"a11cb73345f382bb39186cbdd74ba35e570ee1929b2a828287140e7a098143d0","abstract_canon_sha256":"661793d14e68aa9c3fe19747e2a73a1628d98944d4797fce79c7f7d7ced3580a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:46:11.873422Z","signature_b64":"zRr6n9sCG0I2LF/HwE8h7T4Zq+YvECBit67Ph53Tm9zSJZO42UE+VXat3vSZ+dizwl8wel6vZ5hH3lx8LVIuCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f04635400175049bebb312ad3c9fc8c106170cddc54c757811e5799c3b1801ec","last_reissued_at":"2026-05-17T23:46:11.872940Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:46:11.872940Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"X-ray Photons in the CO 2-1 'Lacuna' of NGC 2110","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"A. Paggi, G. Fabbiano, M. Elvis","submitted_at":"2019-04-03T18:46:18Z","abstract_excerpt":"A recent ALMA study of the Seyfert 2 Active Galactic Nucleus (AGN) NGC 2110 by Rosario et al. (2019) has reported a remarkable lack of CO 2-1 emission from the circumnuclear region, where optical lines and H2 emission are observed, leading to the suggestion of excitation of the molecular clouds by the AGN. Since interaction with X-ray photons could be the cause of this excitation, we have searched the archival Chandra data for corroborating evidence. We report an extra-nuclear ~1'' (~170 pc) feature found in the soft (<1.0 keV) Chandra data of the Seyfert 2 Active Galactic Nucleus (AGN) NGC 21"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.02197","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"1904.02197","created_at":"2026-05-17T23:46:11.873020+00:00"},{"alias_kind":"arxiv_version","alias_value":"1904.02197v2","created_at":"2026-05-17T23:46:11.873020+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.02197","created_at":"2026-05-17T23:46:11.873020+00:00"},{"alias_kind":"pith_short_12","alias_value":"6BDDKQABOUCJ","created_at":"2026-05-18T12:33:10.108867+00:00"},{"alias_kind":"pith_short_16","alias_value":"6BDDKQABOUCJX25T","created_at":"2026-05-18T12:33:10.108867+00:00"},{"alias_kind":"pith_short_8","alias_value":"6BDDKQAB","created_at":"2026-05-18T12:33:10.108867+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/6BDDKQABOUCJX25TCKWTZH6IYE","json":"https://pith.science/pith/6BDDKQABOUCJX25TCKWTZH6IYE.json","graph_json":"https://pith.science/api/pith-number/6BDDKQABOUCJX25TCKWTZH6IYE/graph.json","events_json":"https://pith.science/api/pith-number/6BDDKQABOUCJX25TCKWTZH6IYE/events.json","paper":"https://pith.science/paper/6BDDKQAB"},"agent_actions":{"view_html":"https://pith.science/pith/6BDDKQABOUCJX25TCKWTZH6IYE","download_json":"https://pith.science/pith/6BDDKQABOUCJX25TCKWTZH6IYE.json","view_paper":"https://pith.science/paper/6BDDKQAB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1904.02197&json=true","fetch_graph":"https://pith.science/api/pith-number/6BDDKQABOUCJX25TCKWTZH6IYE/graph.json","fetch_events":"https://pith.science/api/pith-number/6BDDKQABOUCJX25TCKWTZH6IYE/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/6BDDKQABOUCJX25TCKWTZH6IYE/action/timestamp_anchor","attest_storage":"https://pith.science/pith/6BDDKQABOUCJX25TCKWTZH6IYE/action/storage_attestation","attest_author":"https://pith.science/pith/6BDDKQABOUCJX25TCKWTZH6IYE/action/author_attestation","sign_citation":"https://pith.science/pith/6BDDKQABOUCJX25TCKWTZH6IYE/action/citation_signature","submit_replication":"https://pith.science/pith/6BDDKQABOUCJX25TCKWTZH6IYE/action/replication_record"}},"created_at":"2026-05-17T23:46:11.873020+00:00","updated_at":"2026-05-17T23:46:11.873020+00:00"}