{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:WBUECMSP7UBQ57KILDB3SJYD36","short_pith_number":"pith:WBUECMSP","schema_version":"1.0","canonical_sha256":"b06841324ffd030efd4858c3b92703dfbbaf5952687ce974a7b766e9ba24252e","source":{"kind":"arxiv","id":"1801.05442","version":2},"attestation_state":"computed","paper":{"title":"Discovery of a dual AGN at z~3.3 with 20kpc separation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"B. Husemann, F. Arrigoni Battaia, G. Worseck, T. Shanks","submitted_at":"2018-01-16T19:00:18Z","abstract_excerpt":"A prediction of the current paradigm of the hierarchical assembly of galaxies is the presence of supermassive dual black holes at separations of a few kpc or less. In this context, we report the detection of a narrow-line emitter within the extended LyA nebula (~120kpc diameter) of the luminous radio-quiet quasi-stellar object (QSO) LBQS0302-0019 at z=3.286. We identify several high-ionization narrow emission lines (HeII, CIV, CIII]) associated with this point-like source, which we have named \"Jil\", which is only ~20kpc (2.9\") away from the QSO in projection. Emission-line diagnostics confirm "},"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":"1801.05442","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-01-16T19:00:18Z","cross_cats_sorted":[],"title_canon_sha256":"424930a9b07d639c1d67c61d2db43fa108e94306c05bfde4d8a365169b12fde2","abstract_canon_sha256":"de62d1b617c6f2bc61473b0638e68fcfd15ee386d7dbf3f4f76b6b9f889ad85d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:20:44.124924Z","signature_b64":"9aupsMo2Ryq4ySAKWtQ/RDV8dQEWFRMSnf7Rp59Qnt+vkmyXmtwoMr1aNYoFbdHjUSuj4uwAfZNUNoJe8NNmCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b06841324ffd030efd4858c3b92703dfbbaf5952687ce974a7b766e9ba24252e","last_reissued_at":"2026-05-18T00:20:44.124234Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:20:44.124234Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Discovery of a dual AGN at z~3.3 with 20kpc separation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"B. Husemann, F. Arrigoni Battaia, G. Worseck, T. Shanks","submitted_at":"2018-01-16T19:00:18Z","abstract_excerpt":"A prediction of the current paradigm of the hierarchical assembly of galaxies is the presence of supermassive dual black holes at separations of a few kpc or less. In this context, we report the detection of a narrow-line emitter within the extended LyA nebula (~120kpc diameter) of the luminous radio-quiet quasi-stellar object (QSO) LBQS0302-0019 at z=3.286. We identify several high-ionization narrow emission lines (HeII, CIV, CIII]) associated with this point-like source, which we have named \"Jil\", which is only ~20kpc (2.9\") away from the QSO in projection. Emission-line diagnostics confirm "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.05442","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":"1801.05442","created_at":"2026-05-18T00:20:44.124335+00:00"},{"alias_kind":"arxiv_version","alias_value":"1801.05442v2","created_at":"2026-05-18T00:20:44.124335+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.05442","created_at":"2026-05-18T00:20:44.124335+00:00"},{"alias_kind":"pith_short_12","alias_value":"WBUECMSP7UBQ","created_at":"2026-05-18T12:32:59.047623+00:00"},{"alias_kind":"pith_short_16","alias_value":"WBUECMSP7UBQ57KI","created_at":"2026-05-18T12:32:59.047623+00:00"},{"alias_kind":"pith_short_8","alias_value":"WBUECMSP","created_at":"2026-05-18T12:32:59.047623+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/WBUECMSP7UBQ57KILDB3SJYD36","json":"https://pith.science/pith/WBUECMSP7UBQ57KILDB3SJYD36.json","graph_json":"https://pith.science/api/pith-number/WBUECMSP7UBQ57KILDB3SJYD36/graph.json","events_json":"https://pith.science/api/pith-number/WBUECMSP7UBQ57KILDB3SJYD36/events.json","paper":"https://pith.science/paper/WBUECMSP"},"agent_actions":{"view_html":"https://pith.science/pith/WBUECMSP7UBQ57KILDB3SJYD36","download_json":"https://pith.science/pith/WBUECMSP7UBQ57KILDB3SJYD36.json","view_paper":"https://pith.science/paper/WBUECMSP","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1801.05442&json=true","fetch_graph":"https://pith.science/api/pith-number/WBUECMSP7UBQ57KILDB3SJYD36/graph.json","fetch_events":"https://pith.science/api/pith-number/WBUECMSP7UBQ57KILDB3SJYD36/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WBUECMSP7UBQ57KILDB3SJYD36/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WBUECMSP7UBQ57KILDB3SJYD36/action/storage_attestation","attest_author":"https://pith.science/pith/WBUECMSP7UBQ57KILDB3SJYD36/action/author_attestation","sign_citation":"https://pith.science/pith/WBUECMSP7UBQ57KILDB3SJYD36/action/citation_signature","submit_replication":"https://pith.science/pith/WBUECMSP7UBQ57KILDB3SJYD36/action/replication_record"}},"created_at":"2026-05-18T00:20:44.124335+00:00","updated_at":"2026-05-18T00:20:44.124335+00:00"}