{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1994:NAWLUEHIX7BTFHQYNE2AB35ACA","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":"f9038cbf12db042b9d89a39b6df5ce1ba5b0adc471bc61c2277e497c71c37d50","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1994-08-16T19:34:40Z","title_canon_sha256":"1978f8097b271f04d9c28a2c20c4ce24c096d46e7e422c00a16e46b41398c5b7"},"schema_version":"1.0","source":{"id":"astro-ph/9408052","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9408052","created_at":"2026-07-04T14:14:29Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9408052v1","created_at":"2026-07-04T14:14:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9408052","created_at":"2026-07-04T14:14:29Z"},{"alias_kind":"pith_short_12","alias_value":"NAWLUEHIX7BT","created_at":"2026-07-04T14:14:29Z"},{"alias_kind":"pith_short_16","alias_value":"NAWLUEHIX7BTFHQY","created_at":"2026-07-04T14:14:29Z"},{"alias_kind":"pith_short_8","alias_value":"NAWLUEHI","created_at":"2026-07-04T14:14:29Z"}],"graph_snapshots":[{"event_id":"sha256:9c4f4fbb16b70217f5427c680ddef3dbd6dcb74e7bbde03e878cff44087a1751","target":"graph","created_at":"2026-07-04T14:14:29Z","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/9408052/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"At large redshifts, a cluster or group may be too distant for the galaxies within the cluster to be detected individually. However, the light from these ``undetected'' galaxies still modulates the surface brightness of the background sky. Clusters can appear as 10\"-1.5' sized fluctuations in the surface brightness of the EBL. The fluctuations have central surface brightnesses between roughly 26 and 28 mag/sqr-arcsec (in V) for clusters between z=1 and z=2, and are brighter than the fluctuations produced by background field galaxies. While such low surface brightnesses are difficult to achieve ","authors_text":"J.J. Dalcanton","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1994-08-16T19:34:40Z","title":"A New Method for Finding Clusters of Galaxies at z>1"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9408052","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":"sha256:12851871c8d50374879b5d1926eb6d1c2545124dd2dc62b6d999d059bf095e4d","target":"record","created_at":"2026-07-04T14:14:29Z","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":"f9038cbf12db042b9d89a39b6df5ce1ba5b0adc471bc61c2277e497c71c37d50","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1994-08-16T19:34:40Z","title_canon_sha256":"1978f8097b271f04d9c28a2c20c4ce24c096d46e7e422c00a16e46b41398c5b7"},"schema_version":"1.0","source":{"id":"astro-ph/9408052","kind":"arxiv","version":1}},"canonical_sha256":"682cba10e8bfc3329e18693400efa01015b2c496d4020191bac9c5c3f9ee42f2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"682cba10e8bfc3329e18693400efa01015b2c496d4020191bac9c5c3f9ee42f2","first_computed_at":"2026-07-04T14:14:29.316468Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:14:29.316468Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jVpT1yr14tuhRcilqQO7Oln4yMWroyRkWdLkhh0/dAr8bKObUK7g7/aAyhKKSjjP+Q/XY+GjrX2nLLZUQJT0Dg==","signature_status":"signed_v1","signed_at":"2026-07-04T14:14:29.316856Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9408052","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:12851871c8d50374879b5d1926eb6d1c2545124dd2dc62b6d999d059bf095e4d","sha256:9c4f4fbb16b70217f5427c680ddef3dbd6dcb74e7bbde03e878cff44087a1751"],"state_sha256":"22ed121ee9f84b8313d0ff9c95b64d5caee965470794f250632486aa8a88eeba"}