{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:3L6Y5YV2JJ6HOBAX27IGW2GOTX","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"3fe533e11cd0d9f5f067612adc6681a55ed2320ff86d2723a62b7e8e2e141d5a","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-01-11T19:08:37Z","title_canon_sha256":"1f722212231d4c75688c38d2c7d833f886d2091da7322d294665ad2ea12042f7"},"schema_version":"1.0","source":{"id":"astro-ph/9901130","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9901130","created_at":"2026-07-04T14:16:29Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9901130v1","created_at":"2026-07-04T14:16:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9901130","created_at":"2026-07-04T14:16:29Z"},{"alias_kind":"pith_short_12","alias_value":"3L6Y5YV2JJ6H","created_at":"2026-07-04T14:16:29Z"},{"alias_kind":"pith_short_16","alias_value":"3L6Y5YV2JJ6HOBAX","created_at":"2026-07-04T14:16:29Z"},{"alias_kind":"pith_short_8","alias_value":"3L6Y5YV2","created_at":"2026-07-04T14:16:29Z"}],"graph_snapshots":[{"event_id":"sha256:0e3d78cdb55c6a9ac8080cb6b0a6a7087d7f54702c6a09f4d847cf44f6adbf36","target":"graph","created_at":"2026-07-04T14:16:29Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/9901130/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Active Galactic Nuclei (AGN) are now known to be strong gamma-ray emitters. After briefly describing AGN classification and the main ideas behind unified schemes, I summarize the main properties of blazars (that is BL Lacs and flat-spectrum radio quasars) and their connection with relativistic beaming. Finally, I address the question of why blazars, despite being extreme and very rare objects, are the only AGN detected at high (E > 100 MeV) energies, and touch upon the relevance of TeV astronomy for AGN research.","authors_text":"Paolo Padovani (STScI/ESA)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1999-01-11T19:08:37Z","title":"High Energy Emission from AGN and Unified Schemes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9901130","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:7a253b3a32b9a7aebbfaba87b447483a978eeaba7f861f5ac83c5b498993ed18","target":"record","created_at":"2026-07-04T14:16:29Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"3fe533e11cd0d9f5f067612adc6681a55ed2320ff86d2723a62b7e8e2e141d5a","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-01-11T19:08:37Z","title_canon_sha256":"1f722212231d4c75688c38d2c7d833f886d2091da7322d294665ad2ea12042f7"},"schema_version":"1.0","source":{"id":"astro-ph/9901130","kind":"arxiv","version":1}},"canonical_sha256":"dafd8ee2ba4a7c770417d7d06b68ce9dc656a67bdf7ffb36bb780584f898f852","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dafd8ee2ba4a7c770417d7d06b68ce9dc656a67bdf7ffb36bb780584f898f852","first_computed_at":"2026-07-04T14:16:29.256140Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:16:29.256140Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"J1ZQsOlhnSanlfqBoz6KF9v0aIZjr/PcRnoT6poHW/84K+8BJYWqfhoS3htLPm30kFM7BkhOjyFmGjtMeTfTBg==","signature_status":"signed_v1","signed_at":"2026-07-04T14:16:29.256543Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9901130","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7a253b3a32b9a7aebbfaba87b447483a978eeaba7f861f5ac83c5b498993ed18","sha256:0e3d78cdb55c6a9ac8080cb6b0a6a7087d7f54702c6a09f4d847cf44f6adbf36"],"state_sha256":"58e8d74d4e881e8e227abf7b250606cf88dedb43cd45bbc77066fefbd6cd544d"}