{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:1998:SDL26SWIPNEMQ5IHGDJWVF6T7A","short_pith_number":"pith:SDL26SWI","schema_version":"1.0","canonical_sha256":"90d7af4ac87b48c8750730d36a97d3f839362fb063fe20771ba60c9ff5166d2a","source":{"kind":"arxiv","id":"astro-ph/9811139","version":1},"attestation_state":"computed","paper":{"title":"The ROSAT BRIGHT survey: I. Identification of an AGN sample with hard ROSAT X-ray spectra","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A.D. Schwope, G. Hasinger, H. Brunner, J. Truemper, J.-U. Fischer, S. Neizvestny, Th.Boller, W. Voges","submitted_at":"1998-11-09T17:10:55Z","abstract_excerpt":"The ROSAT Bright Survey (RBS) aims to completely optically identify the more than 2000 brightest sources detected in the ROSAT all-sky survey at galactic latitudes |b| > 30 degr (excluding LMC, SMC, Virgo cluster). This paper presents a subsample of 66 bright point-like ROSAT survey sources with almost hard PSPC spectra, the hardness ratio HR1 is > 0.5 for most of the sources. The subsample could be nearly completely identified by low-resolution optical spectroscopy with the following breakdown into object classes: 31 Seyfert galaxies, 22 BL Lac candidates, 5 clusters of galaxies 1 cataclysmic"},"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":"astro-ph/9811139","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1998-11-09T17:10:55Z","cross_cats_sorted":[],"title_canon_sha256":"976db62df27e9dc9de6eb29008924356e6e5672415b5446b79b4f8b0db1eea70","abstract_canon_sha256":"b0e88cc2534511b58e6281cc7ca802074cdc3156db207f5363213b373f445247"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:13.601429Z","signature_b64":"Bbfs3gVyZrpool6YqETcuC9UtQQhXgRR92kD0rWtsnCGNDqTJee+FXGZBwyO+WtIx0yybyH/DUURuhPjC5qTCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"90d7af4ac87b48c8750730d36a97d3f839362fb063fe20771ba60c9ff5166d2a","last_reissued_at":"2026-05-18T01:40:13.600793Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:13.600793Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The ROSAT BRIGHT survey: I. Identification of an AGN sample with hard ROSAT X-ray spectra","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A.D. Schwope, G. Hasinger, H. Brunner, J. Truemper, J.-U. Fischer, S. Neizvestny, Th.Boller, W. Voges","submitted_at":"1998-11-09T17:10:55Z","abstract_excerpt":"The ROSAT Bright Survey (RBS) aims to completely optically identify the more than 2000 brightest sources detected in the ROSAT all-sky survey at galactic latitudes |b| > 30 degr (excluding LMC, SMC, Virgo cluster). This paper presents a subsample of 66 bright point-like ROSAT survey sources with almost hard PSPC spectra, the hardness ratio HR1 is > 0.5 for most of the sources. The subsample could be nearly completely identified by low-resolution optical spectroscopy with the following breakdown into object classes: 31 Seyfert galaxies, 22 BL Lac candidates, 5 clusters of galaxies 1 cataclysmic"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9811139","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":"astro-ph/9811139","created_at":"2026-05-18T01:40:13.600900+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9811139v1","created_at":"2026-05-18T01:40:13.600900+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9811139","created_at":"2026-05-18T01:40:13.600900+00:00"},{"alias_kind":"pith_short_12","alias_value":"SDL26SWIPNEM","created_at":"2026-05-18T12:25:49.038998+00:00"},{"alias_kind":"pith_short_16","alias_value":"SDL26SWIPNEMQ5IH","created_at":"2026-05-18T12:25:49.038998+00:00"},{"alias_kind":"pith_short_8","alias_value":"SDL26SWI","created_at":"2026-05-18T12:25:49.038998+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/SDL26SWIPNEMQ5IHGDJWVF6T7A","json":"https://pith.science/pith/SDL26SWIPNEMQ5IHGDJWVF6T7A.json","graph_json":"https://pith.science/api/pith-number/SDL26SWIPNEMQ5IHGDJWVF6T7A/graph.json","events_json":"https://pith.science/api/pith-number/SDL26SWIPNEMQ5IHGDJWVF6T7A/events.json","paper":"https://pith.science/paper/SDL26SWI"},"agent_actions":{"view_html":"https://pith.science/pith/SDL26SWIPNEMQ5IHGDJWVF6T7A","download_json":"https://pith.science/pith/SDL26SWIPNEMQ5IHGDJWVF6T7A.json","view_paper":"https://pith.science/paper/SDL26SWI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/9811139&json=true","fetch_graph":"https://pith.science/api/pith-number/SDL26SWIPNEMQ5IHGDJWVF6T7A/graph.json","fetch_events":"https://pith.science/api/pith-number/SDL26SWIPNEMQ5IHGDJWVF6T7A/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SDL26SWIPNEMQ5IHGDJWVF6T7A/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SDL26SWIPNEMQ5IHGDJWVF6T7A/action/storage_attestation","attest_author":"https://pith.science/pith/SDL26SWIPNEMQ5IHGDJWVF6T7A/action/author_attestation","sign_citation":"https://pith.science/pith/SDL26SWIPNEMQ5IHGDJWVF6T7A/action/citation_signature","submit_replication":"https://pith.science/pith/SDL26SWIPNEMQ5IHGDJWVF6T7A/action/replication_record"}},"created_at":"2026-05-18T01:40:13.600900+00:00","updated_at":"2026-05-18T01:40:13.600900+00:00"}