{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:QZVKPE3NJD7VLDEYULKXQB6TUR","short_pith_number":"pith:QZVKPE3N","schema_version":"1.0","canonical_sha256":"866aa7936d48ff558c98a2d57807d3a46f54a32a234c55e59b0037a4265e5c88","source":{"kind":"arxiv","id":"2004.02884","version":2},"attestation_state":"computed","paper":{"title":"A Hard X-ray Test of HCN Enhancements as a Tracer of Embedded Black Hole Growth","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"A. S. Evans, C. Ricci, D. L. Jeff, E. Gonz\\'alez-Alfonso, E. Treister, F. Bauer, G. C. Privon, J. M. Mazzarella, K. Iwasawa, K. Larson, L. Armus, L. Barcos-Mu\\~noz, L. Blecha, M. A. P\\'erez-Torres, P. Garg, R. Herrero-Illana, S. Aalto, S. Stierwalt, S. Viti, T. D\\'iaz-Santos, V. Charmandaris","submitted_at":"2020-04-06T18:00:00Z","abstract_excerpt":"Enhanced emission from the dense gas tracer HCN (relative to HCO$^+ $) has been proposed as a signature of active galactic nuclei (AGN). In a previous single-dish millimeter line survey we identified galaxies with HCN/HCO$ ^+ $ (1-0) intensity ratios consistent with those of many AGN but whose mid-infrared spectral diagnostics are consistent with little to no ( $\\lesssim15\\% $) contribution of an AGN to the bolometric luminosity. To search for putative heavily obscured AGN, we present and analyze \\nustar hard X-ray (3-79 keV) observations of four such galaxies from the Great Observatories All-"},"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":"2004.02884","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-04-06T18:00:00Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"e57f38cd2cc10cd5301f9170d37b801f6bb148895ca338a30c0d6ce4c9f0bfec","abstract_canon_sha256":"3b7a0b5d8baff26388e342c03a569fbb7cd547f507990da1c8895c42f1a506c5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:57:53.018175Z","signature_b64":"JzcJbykipYrQHz1GKZFDOwkj0zecUDxpTtdUSPL1JspAPnsRD0Rrpoo4QSbDWoXYtuhYuQuvWLofUJENcO3OCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"866aa7936d48ff558c98a2d57807d3a46f54a32a234c55e59b0037a4265e5c88","last_reissued_at":"2026-07-05T00:57:53.017807Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:57:53.017807Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A Hard X-ray Test of HCN Enhancements as a Tracer of Embedded Black Hole Growth","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"A. S. Evans, C. Ricci, D. L. Jeff, E. Gonz\\'alez-Alfonso, E. Treister, F. Bauer, G. C. Privon, J. M. Mazzarella, K. Iwasawa, K. Larson, L. Armus, L. Barcos-Mu\\~noz, L. Blecha, M. A. P\\'erez-Torres, P. Garg, R. Herrero-Illana, S. Aalto, S. Stierwalt, S. Viti, T. D\\'iaz-Santos, V. Charmandaris","submitted_at":"2020-04-06T18:00:00Z","abstract_excerpt":"Enhanced emission from the dense gas tracer HCN (relative to HCO$^+ $) has been proposed as a signature of active galactic nuclei (AGN). In a previous single-dish millimeter line survey we identified galaxies with HCN/HCO$ ^+ $ (1-0) intensity ratios consistent with those of many AGN but whose mid-infrared spectral diagnostics are consistent with little to no ( $\\lesssim15\\% $) contribution of an AGN to the bolometric luminosity. To search for putative heavily obscured AGN, we present and analyze \\nustar hard X-ray (3-79 keV) observations of four such galaxies from the Great Observatories All-"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.02884","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2004.02884/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":"2004.02884","created_at":"2026-07-05T00:57:53.017864+00:00"},{"alias_kind":"arxiv_version","alias_value":"2004.02884v2","created_at":"2026-07-05T00:57:53.017864+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.02884","created_at":"2026-07-05T00:57:53.017864+00:00"},{"alias_kind":"pith_short_12","alias_value":"QZVKPE3NJD7V","created_at":"2026-07-05T00:57:53.017864+00:00"},{"alias_kind":"pith_short_16","alias_value":"QZVKPE3NJD7VLDEY","created_at":"2026-07-05T00:57:53.017864+00:00"},{"alias_kind":"pith_short_8","alias_value":"QZVKPE3N","created_at":"2026-07-05T00:57:53.017864+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/QZVKPE3NJD7VLDEYULKXQB6TUR","json":"https://pith.science/pith/QZVKPE3NJD7VLDEYULKXQB6TUR.json","graph_json":"https://pith.science/api/pith-number/QZVKPE3NJD7VLDEYULKXQB6TUR/graph.json","events_json":"https://pith.science/api/pith-number/QZVKPE3NJD7VLDEYULKXQB6TUR/events.json","paper":"https://pith.science/paper/QZVKPE3N"},"agent_actions":{"view_html":"https://pith.science/pith/QZVKPE3NJD7VLDEYULKXQB6TUR","download_json":"https://pith.science/pith/QZVKPE3NJD7VLDEYULKXQB6TUR.json","view_paper":"https://pith.science/paper/QZVKPE3N","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2004.02884&json=true","fetch_graph":"https://pith.science/api/pith-number/QZVKPE3NJD7VLDEYULKXQB6TUR/graph.json","fetch_events":"https://pith.science/api/pith-number/QZVKPE3NJD7VLDEYULKXQB6TUR/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QZVKPE3NJD7VLDEYULKXQB6TUR/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QZVKPE3NJD7VLDEYULKXQB6TUR/action/storage_attestation","attest_author":"https://pith.science/pith/QZVKPE3NJD7VLDEYULKXQB6TUR/action/author_attestation","sign_citation":"https://pith.science/pith/QZVKPE3NJD7VLDEYULKXQB6TUR/action/citation_signature","submit_replication":"https://pith.science/pith/QZVKPE3NJD7VLDEYULKXQB6TUR/action/replication_record"}},"created_at":"2026-07-05T00:57:53.017864+00:00","updated_at":"2026-07-05T00:57:53.017864+00:00"}