{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:APKXGCMRXFRHFPLRPDMB35V3KJ","short_pith_number":"pith:APKXGCMR","canonical_record":{"source":{"id":"astro-ph/0606602","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-06-26T19:12:15Z","cross_cats_sorted":[],"title_canon_sha256":"70e73c0edd0e1c73ca798f7c2bb1a0d0b776a865687af86245f2e9a5f783d828","abstract_canon_sha256":"ef891c5cc73415189373da076aac52bf010da9f8ffb0cbd9a0067ae9cf2c6673"},"schema_version":"1.0"},"canonical_sha256":"03d5730991b96272bd7178d81df6bb52724e80bac5641a6b420186b8015a8e00","source":{"kind":"arxiv","id":"astro-ph/0606602","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0606602","created_at":"2026-05-18T04:38:37Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0606602v2","created_at":"2026-05-18T04:38:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0606602","created_at":"2026-05-18T04:38:37Z"},{"alias_kind":"pith_short_12","alias_value":"APKXGCMRXFRH","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"APKXGCMRXFRHFPLR","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"APKXGCMR","created_at":"2026-05-18T12:25:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:APKXGCMRXFRHFPLRPDMB35V3KJ","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0606602","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-06-26T19:12:15Z","cross_cats_sorted":[],"title_canon_sha256":"70e73c0edd0e1c73ca798f7c2bb1a0d0b776a865687af86245f2e9a5f783d828","abstract_canon_sha256":"ef891c5cc73415189373da076aac52bf010da9f8ffb0cbd9a0067ae9cf2c6673"},"schema_version":"1.0"},"canonical_sha256":"03d5730991b96272bd7178d81df6bb52724e80bac5641a6b420186b8015a8e00","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:38:37.430475Z","signature_b64":"Y2ri/Sed31Ae8EOBc2KLraycFqpVakn4n7eL0kPsMe9WOeC/flNqXmIh9DZDKqoQZPK2DYqJtx3kz3z6IyavDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"03d5730991b96272bd7178d81df6bb52724e80bac5641a6b420186b8015a8e00","last_reissued_at":"2026-05-18T04:38:37.429920Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:38:37.429920Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0606602","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:38:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F7oT77qdOpgVt7JE4T0nLE+IxVpJVWh9WOkBMZWSkqDNycxd552cq3ot3C1yX+oZ5NS1621laUOQUjpSRp2AAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T23:17:53.887264Z"},"content_sha256":"b75627478e5a1e9b78754d1ac857a32b4dec7f05ef03d45906745385a45f6452","schema_version":"1.0","event_id":"sha256:b75627478e5a1e9b78754d1ac857a32b4dec7f05ef03d45906745385a45f6452"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:APKXGCMRXFRHFPLRPDMB35V3KJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cosmology with X-ray Cluster Baryons","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Eric V. Linder","submitted_at":"2006-06-26T19:12:15Z","abstract_excerpt":"X-ray cluster measurements interpreted with a universal baryon/gas mass fraction can theoretically serve as a cosmological distance probe. We examine issues of cosmological sensitivity for current (e.g. Chandra X-ray Observatory, XMM-Newton) and next generation (e.g. Con-X, XEUS) observations, along with systematic uncertainties and biases. To give competitive next generation constraints on dark energy, we find that systematics will need to be controlled to better than 1% and any evolution in f_gas (and other cluster gas properties) must be calibrated so the residual uncertainty is weaker than"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0606602","kind":"arxiv","version":2},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:38:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X26NHCsu4GGZnfAvQfQIjBZPAkGxEjghiaqD9APMkK/x8mXf4ya8ypt6P+hbcjCV7ZL1RS6N/u9F89tpLE2NCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T23:17:53.887614Z"},"content_sha256":"a362dd0da9ed2e11efca6d6ae7acb0ef97317c5c1a82a1005f49f654b2d8ede1","schema_version":"1.0","event_id":"sha256:a362dd0da9ed2e11efca6d6ae7acb0ef97317c5c1a82a1005f49f654b2d8ede1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/APKXGCMRXFRHFPLRPDMB35V3KJ/bundle.json","state_url":"https://pith.science/pith/APKXGCMRXFRHFPLRPDMB35V3KJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/APKXGCMRXFRHFPLRPDMB35V3KJ/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-01T23:17:53Z","links":{"resolver":"https://pith.science/pith/APKXGCMRXFRHFPLRPDMB35V3KJ","bundle":"https://pith.science/pith/APKXGCMRXFRHFPLRPDMB35V3KJ/bundle.json","state":"https://pith.science/pith/APKXGCMRXFRHFPLRPDMB35V3KJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/APKXGCMRXFRHFPLRPDMB35V3KJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:APKXGCMRXFRHFPLRPDMB35V3KJ","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":"ef891c5cc73415189373da076aac52bf010da9f8ffb0cbd9a0067ae9cf2c6673","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-06-26T19:12:15Z","title_canon_sha256":"70e73c0edd0e1c73ca798f7c2bb1a0d0b776a865687af86245f2e9a5f783d828"},"schema_version":"1.0","source":{"id":"astro-ph/0606602","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0606602","created_at":"2026-05-18T04:38:37Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0606602v2","created_at":"2026-05-18T04:38:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0606602","created_at":"2026-05-18T04:38:37Z"},{"alias_kind":"pith_short_12","alias_value":"APKXGCMRXFRH","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"APKXGCMRXFRHFPLR","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"APKXGCMR","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:a362dd0da9ed2e11efca6d6ae7acb0ef97317c5c1a82a1005f49f654b2d8ede1","target":"graph","created_at":"2026-05-18T04:38:37Z","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"},"paper":{"abstract_excerpt":"X-ray cluster measurements interpreted with a universal baryon/gas mass fraction can theoretically serve as a cosmological distance probe. We examine issues of cosmological sensitivity for current (e.g. Chandra X-ray Observatory, XMM-Newton) and next generation (e.g. Con-X, XEUS) observations, along with systematic uncertainties and biases. To give competitive next generation constraints on dark energy, we find that systematics will need to be controlled to better than 1% and any evolution in f_gas (and other cluster gas properties) must be calibrated so the residual uncertainty is weaker than","authors_text":"Eric V. Linder","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2006-06-26T19:12:15Z","title":"Cosmology with X-ray Cluster Baryons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0606602","kind":"arxiv","version":2},"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:b75627478e5a1e9b78754d1ac857a32b4dec7f05ef03d45906745385a45f6452","target":"record","created_at":"2026-05-18T04:38:37Z","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":"ef891c5cc73415189373da076aac52bf010da9f8ffb0cbd9a0067ae9cf2c6673","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-06-26T19:12:15Z","title_canon_sha256":"70e73c0edd0e1c73ca798f7c2bb1a0d0b776a865687af86245f2e9a5f783d828"},"schema_version":"1.0","source":{"id":"astro-ph/0606602","kind":"arxiv","version":2}},"canonical_sha256":"03d5730991b96272bd7178d81df6bb52724e80bac5641a6b420186b8015a8e00","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"03d5730991b96272bd7178d81df6bb52724e80bac5641a6b420186b8015a8e00","first_computed_at":"2026-05-18T04:38:37.429920Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:38:37.429920Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Y2ri/Sed31Ae8EOBc2KLraycFqpVakn4n7eL0kPsMe9WOeC/flNqXmIh9DZDKqoQZPK2DYqJtx3kz3z6IyavDw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:38:37.430475Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0606602","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b75627478e5a1e9b78754d1ac857a32b4dec7f05ef03d45906745385a45f6452","sha256:a362dd0da9ed2e11efca6d6ae7acb0ef97317c5c1a82a1005f49f654b2d8ede1"],"state_sha256":"c4a1861d5124df0f14e9af3caa2c360585a48eff96184b272f5d3829bf2e0a56"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nr5UnuZy9FaT9pB9H1NGd1ZCelwfZ4pDplpyaPJa4d0uK0PSqWOtYmvlhvowHN7cBAI6OuA1m1dH3fNfcol4Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T23:17:53.889444Z","bundle_sha256":"ec37bbf8f174a0ddf9f9b8ccab27e1938942a4d8b0180e4b890de33b0c34175c"}}