{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:PKHJDSZ6IPWPFXRMOUJIBIV4FK","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":"91876c68e6ab02adfbe007b058ad924168d864d2143fe44e266d4389dc214351","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-08-26T14:41:12Z","title_canon_sha256":"d6f15d6b39e8cfa38c52cbbce3f651e2ef2cd7ffa47b002a48c0bdfb549d8856"},"schema_version":"1.0","source":{"id":"1008.4524","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.4524","created_at":"2026-05-18T02:41:01Z"},{"alias_kind":"arxiv_version","alias_value":"1008.4524v3","created_at":"2026-05-18T02:41:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.4524","created_at":"2026-05-18T02:41:01Z"},{"alias_kind":"pith_short_12","alias_value":"PKHJDSZ6IPWP","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_16","alias_value":"PKHJDSZ6IPWPFXRM","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_8","alias_value":"PKHJDSZ6","created_at":"2026-05-18T12:26:12Z"}],"graph_snapshots":[{"event_id":"sha256:ee8a59d7edf0766d416d8e12022c17f1916a37def08670fe946aec0918d38d45","target":"graph","created_at":"2026-05-18T02:41:01Z","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"},"paper":{"abstract_excerpt":"The continuum high-energy gamma-ray emission between 1 GeV and 100 TeV from the Crab Nebula has been measured for the first time in overlapping energy bands by the Fermi large-area telescope (Fermi/LAT) below ~ 100 GeV and by ground-based imaging air Cherenkov telescopes (IACTs) above ~ 60 GeV. To follow up on the phenomenological approach suggested by Hillas et al. (1998), the broad band spectral and spatial measurement (from radio to low-energy gamma-rays < 1 GeV) is used to extract the shape of the electron spectrum. While this model per construction provides an excellent description of the","authors_text":"D. Horns, H.-S. Zechlin, M. Meyer","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-08-26T14:41:12Z","title":"The Crab Nebula as a standard candle in very high-energy astrophysics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.4524","kind":"arxiv","version":3},"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:d14e12862c0ac68fba2145b04c31e67a304f5911b049c2352cd59390b776d869","target":"record","created_at":"2026-05-18T02:41:01Z","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":"91876c68e6ab02adfbe007b058ad924168d864d2143fe44e266d4389dc214351","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-08-26T14:41:12Z","title_canon_sha256":"d6f15d6b39e8cfa38c52cbbce3f651e2ef2cd7ffa47b002a48c0bdfb549d8856"},"schema_version":"1.0","source":{"id":"1008.4524","kind":"arxiv","version":3}},"canonical_sha256":"7a8e91cb3e43ecf2de2c751280a2bc2a8eb00f23c8aa8765b18d140a7f16e3c1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7a8e91cb3e43ecf2de2c751280a2bc2a8eb00f23c8aa8765b18d140a7f16e3c1","first_computed_at":"2026-05-18T02:41:01.824866Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:41:01.824866Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZrNCgvLDuo75OQLHrschgQOkysDNjvV7XHusO8poPh0Vuh6GrVcrdDJurp1EhWrIkPCGCc3MZk8lDiBOy1D4DA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:41:01.825354Z","signed_message":"canonical_sha256_bytes"},"source_id":"1008.4524","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d14e12862c0ac68fba2145b04c31e67a304f5911b049c2352cd59390b776d869","sha256:ee8a59d7edf0766d416d8e12022c17f1916a37def08670fe946aec0918d38d45"],"state_sha256":"03c1763dd529c14d60b7d9caa7bd439f45930cd93f13efe64f073440fd8b3b20"}