{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:4S2SDQTIIH73V7WCX4FWGHQGWP","short_pith_number":"pith:4S2SDQTI","schema_version":"1.0","canonical_sha256":"e4b521c26841ffbafec2bf0b631e06b3dcaf3d20b21b2e1b3e7b2f22d523602b","source":{"kind":"arxiv","id":"1809.05107","version":1},"attestation_state":"computed","paper":{"title":"NuSTAR reveals that the heavily obscured nucleus of NGC 2785 was the contaminant of IRAS 09104+4109 in the BeppoSAX/PDS hard X-rays","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Comastri, C. Vignali, E. Piconcelli, G. Lanzuisi, K. Iwasawa, L. Ballo, M. Mignoli, P. Severgnini, R. Gilli, V. La Parola","submitted_at":"2018-09-13T18:00:10Z","abstract_excerpt":"The search for heavily obscured active galactic nuclei (AGNs) has been revitalized in the last five years by NuSTAR, which has provided a good census and spectral characterization of a population of such objects, mostly at low redshift, thanks to its enhanced sensitivity above 10 keV compared to previous X-ray facilities, and its hard X-ray imaging capabilities. We aim at demonstrating how NGC2785, a local (z=0.009) star-forming galaxy, is responsible, in virtue of its heavily obscured active nucleus, for significant contamination in the non-imaging BeppoSAX/PDS data of the relatively nearby ("},"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":"1809.05107","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-13T18:00:10Z","cross_cats_sorted":[],"title_canon_sha256":"b250a72a6e4367ac405c7db6b4cf44f2f1454e51930e0e2615bda6f5c377cc3f","abstract_canon_sha256":"702764782e967ea84d8dc3d794918de40db28cf386d7064ecd2e5789b381324e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:01:57.742609Z","signature_b64":"Fv23XJ0hgLL9jL2vZ6VO2dMO6U8qlKnmFvvNQqXU8YyH+RpietCW8ulkZ5N8FUEvdh7/e6EqGiWLoL90/v3TDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e4b521c26841ffbafec2bf0b631e06b3dcaf3d20b21b2e1b3e7b2f22d523602b","last_reissued_at":"2026-05-18T00:01:57.742137Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:01:57.742137Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"NuSTAR reveals that the heavily obscured nucleus of NGC 2785 was the contaminant of IRAS 09104+4109 in the BeppoSAX/PDS hard X-rays","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Comastri, C. Vignali, E. Piconcelli, G. Lanzuisi, K. Iwasawa, L. Ballo, M. Mignoli, P. Severgnini, R. Gilli, V. La Parola","submitted_at":"2018-09-13T18:00:10Z","abstract_excerpt":"The search for heavily obscured active galactic nuclei (AGNs) has been revitalized in the last five years by NuSTAR, which has provided a good census and spectral characterization of a population of such objects, mostly at low redshift, thanks to its enhanced sensitivity above 10 keV compared to previous X-ray facilities, and its hard X-ray imaging capabilities. We aim at demonstrating how NGC2785, a local (z=0.009) star-forming galaxy, is responsible, in virtue of its heavily obscured active nucleus, for significant contamination in the non-imaging BeppoSAX/PDS data of the relatively nearby ("},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.05107","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":""},"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":"1809.05107","created_at":"2026-05-18T00:01:57.742220+00:00"},{"alias_kind":"arxiv_version","alias_value":"1809.05107v1","created_at":"2026-05-18T00:01:57.742220+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.05107","created_at":"2026-05-18T00:01:57.742220+00:00"},{"alias_kind":"pith_short_12","alias_value":"4S2SDQTIIH73","created_at":"2026-05-18T12:32:05.422762+00:00"},{"alias_kind":"pith_short_16","alias_value":"4S2SDQTIIH73V7WC","created_at":"2026-05-18T12:32:05.422762+00:00"},{"alias_kind":"pith_short_8","alias_value":"4S2SDQTI","created_at":"2026-05-18T12:32:05.422762+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/4S2SDQTIIH73V7WCX4FWGHQGWP","json":"https://pith.science/pith/4S2SDQTIIH73V7WCX4FWGHQGWP.json","graph_json":"https://pith.science/api/pith-number/4S2SDQTIIH73V7WCX4FWGHQGWP/graph.json","events_json":"https://pith.science/api/pith-number/4S2SDQTIIH73V7WCX4FWGHQGWP/events.json","paper":"https://pith.science/paper/4S2SDQTI"},"agent_actions":{"view_html":"https://pith.science/pith/4S2SDQTIIH73V7WCX4FWGHQGWP","download_json":"https://pith.science/pith/4S2SDQTIIH73V7WCX4FWGHQGWP.json","view_paper":"https://pith.science/paper/4S2SDQTI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1809.05107&json=true","fetch_graph":"https://pith.science/api/pith-number/4S2SDQTIIH73V7WCX4FWGHQGWP/graph.json","fetch_events":"https://pith.science/api/pith-number/4S2SDQTIIH73V7WCX4FWGHQGWP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4S2SDQTIIH73V7WCX4FWGHQGWP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4S2SDQTIIH73V7WCX4FWGHQGWP/action/storage_attestation","attest_author":"https://pith.science/pith/4S2SDQTIIH73V7WCX4FWGHQGWP/action/author_attestation","sign_citation":"https://pith.science/pith/4S2SDQTIIH73V7WCX4FWGHQGWP/action/citation_signature","submit_replication":"https://pith.science/pith/4S2SDQTIIH73V7WCX4FWGHQGWP/action/replication_record"}},"created_at":"2026-05-18T00:01:57.742220+00:00","updated_at":"2026-05-18T00:01:57.742220+00:00"}