{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:AVXOQIP5P4UT5UIUQIYZIGF5WF","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":"0c2f58241ef41658e6c0984e37db04f9df627f1704665f79e5b845c8c8ba591b","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-11-06T22:30:25Z","title_canon_sha256":"0729cd6f09d6b6f4b85b2c4a00f9446fd9fba5f97ce2b4ae18eb9c30ba0d3eda"},"schema_version":"1.0","source":{"id":"astro-ph/0111131","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0111131","created_at":"2026-07-04T14:11:37Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0111131v1","created_at":"2026-07-04T14:11:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0111131","created_at":"2026-07-04T14:11:37Z"},{"alias_kind":"pith_short_12","alias_value":"AVXOQIP5P4UT","created_at":"2026-07-04T14:11:37Z"},{"alias_kind":"pith_short_16","alias_value":"AVXOQIP5P4UT5UIU","created_at":"2026-07-04T14:11:37Z"},{"alias_kind":"pith_short_8","alias_value":"AVXOQIP5","created_at":"2026-07-04T14:11:37Z"}],"graph_snapshots":[{"event_id":"sha256:8380881c8c9b578ecc6d4fd937adbde0ad4ef96886c7ac690618d11cd2c41a03","target":"graph","created_at":"2026-07-04T14:11:37Z","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/0111131/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper describes updated predictions, as a function of the underlying cosmological model, for a serendipitous galaxy cluster survey that we plan to conduct with the {\\em XMM-Newton} X-ray Satellite. We have included the effects of the higher than anticipated internal background count rates and have expanded our predictions to include clusters detected at 3 sigma. Even with the enhanced background levels, we expect the XCS to detect sufficient clusters at z>1 to differentiate between open and flat cosmological models. We have compared the XCS cluster redshift distribution to those expected ","authors_text":"A. K. Romer, A.R. Liddle, C.A. Collins, P.T.P. Viana, R.C. Nichol, R.G. Mann","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2001-11-06T22:30:25Z","title":"Tracing Cosmic Evolution with an XMM Serendipitous Cluster Survey"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0111131","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":"sha256:1e0d5a60e4e791df84022d137cbcda9f2b041ae3b4fa2f5523be829521923043","target":"record","created_at":"2026-07-04T14:11:37Z","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":"0c2f58241ef41658e6c0984e37db04f9df627f1704665f79e5b845c8c8ba591b","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-11-06T22:30:25Z","title_canon_sha256":"0729cd6f09d6b6f4b85b2c4a00f9446fd9fba5f97ce2b4ae18eb9c30ba0d3eda"},"schema_version":"1.0","source":{"id":"astro-ph/0111131","kind":"arxiv","version":1}},"canonical_sha256":"056ee821fd7f293ed11482319418bdb177102e3f18fe7c661de03f85a286930a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"056ee821fd7f293ed11482319418bdb177102e3f18fe7c661de03f85a286930a","first_computed_at":"2026-07-04T14:11:37.765594Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:11:37.765594Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oGY9V9tNBF36Wf5DIProrFzgegW2DKKngr72up+cVtimLkWn7QrRbwUJtDOQgsgL3leBVLG8O6U/ztedUTCvBA==","signature_status":"signed_v1","signed_at":"2026-07-04T14:11:37.765998Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0111131","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1e0d5a60e4e791df84022d137cbcda9f2b041ae3b4fa2f5523be829521923043","sha256:8380881c8c9b578ecc6d4fd937adbde0ad4ef96886c7ac690618d11cd2c41a03"],"state_sha256":"9d98675f18ce7c7b814d811d04f94944553b682f1e83fa5b0297db0a13ba485c"}