{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:RGLRL5TSVB6KZZ3PBH7RMGHNV2","short_pith_number":"pith:RGLRL5TS","canonical_record":{"source":{"id":"astro-ph/0012067","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-12-04T10:27:32Z","cross_cats_sorted":[],"title_canon_sha256":"8fe157ca7b8c14ea611558a868dfc5d0aace13281f5edf0e3c68fa939610b58f","abstract_canon_sha256":"042d09e88007db1a300c299b7a9a43874f4b1e3ffe4476bea066203bfdc3a054"},"schema_version":"1.0"},"canonical_sha256":"899715f672a87cace76f09ff1618edaebe488ea194649f35105a03e76236f270","source":{"kind":"arxiv","id":"astro-ph/0012067","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0012067","created_at":"2026-05-18T04:23:01Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0012067v1","created_at":"2026-05-18T04:23:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0012067","created_at":"2026-05-18T04:23:01Z"},{"alias_kind":"pith_short_12","alias_value":"RGLRL5TSVB6K","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"RGLRL5TSVB6KZZ3P","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"RGLRL5TS","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:RGLRL5TSVB6KZZ3PBH7RMGHNV2","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0012067","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-12-04T10:27:32Z","cross_cats_sorted":[],"title_canon_sha256":"8fe157ca7b8c14ea611558a868dfc5d0aace13281f5edf0e3c68fa939610b58f","abstract_canon_sha256":"042d09e88007db1a300c299b7a9a43874f4b1e3ffe4476bea066203bfdc3a054"},"schema_version":"1.0"},"canonical_sha256":"899715f672a87cace76f09ff1618edaebe488ea194649f35105a03e76236f270","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:23:01.437395Z","signature_b64":"Fk4iZ8pFsy9cb57KkRO7Jh8MBLzwlxsXMAMBNKpMPFROOwAB7fVfWYqhRIJysgial92KARAuL/BjXc3aBVV+Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"899715f672a87cace76f09ff1618edaebe488ea194649f35105a03e76236f270","last_reissued_at":"2026-05-18T04:23:01.436856Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:23:01.436856Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0012067","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:23:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AJsVWZoxbG0uQOV+A/azALPwhH0clqrTpFMr++N93AFAFWI74dKjHlMnDTz5CChmdPJGs6GoLQFmcpP+X9xuCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:58:35.132842Z"},"content_sha256":"4a1b8902239d41977049cbc3e2644611974ea039d46c2c7255393c311c6f2d7a","schema_version":"1.0","event_id":"sha256:4a1b8902239d41977049cbc3e2644611974ea039d46c2c7255393c311c6f2d7a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:RGLRL5TSVB6KZZ3PBH7RMGHNV2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Galaxy Cluster Gas Mass Fractions from Sunyaev-Zel'dovich Effect Measurements: Constraints on Omega_M","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Erik D. Reese, Gilbert P. Holder, John E. Carlstrom, Joseph J. Mohr, Laura Grego, Marshall K. Joy, & Sandeep Patel, William L. Holzapfel","submitted_at":"2000-12-04T10:27:32Z","abstract_excerpt":"Using sensitive centimeter-wave receivers mounted on the Owens Valley Radio Observatory and Berkeley-Illinois-Maryland-Association millimeter arrays, we have obtained interferometric measurements of the Sunyaev-Zel'dovich (SZ) effect toward massive galaxy clusters. We use the SZ data to determine the pressure distribution of the cluster gas and, in combination with published X-ray temperatures, to infer the gas mass and total gravitational mass of 18 clusters. The gas mass fraction, f_g, is calculated for each cluster, and is extrapolated to the fiducial radius r_{500} using the results of num"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0012067","kind":"arxiv","version":1},"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":"2026-05-18T04:23:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I4gg7uCNi4CAUDKAEX8JOTeJLEsG4D/L/yDeCgxZPJy9OrqsLPrhZZ54xjM47iROhl3fUHRg1LsWhWC7RsIJAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:58:35.133561Z"},"content_sha256":"54ce6ce4794f47a502f9c7192f476ba4126db4e0626ab09833d591cbe31d26ee","schema_version":"1.0","event_id":"sha256:54ce6ce4794f47a502f9c7192f476ba4126db4e0626ab09833d591cbe31d26ee"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RGLRL5TSVB6KZZ3PBH7RMGHNV2/bundle.json","state_url":"https://pith.science/pith/RGLRL5TSVB6KZZ3PBH7RMGHNV2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RGLRL5TSVB6KZZ3PBH7RMGHNV2/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":"2026-05-25T17:58:35Z","links":{"resolver":"https://pith.science/pith/RGLRL5TSVB6KZZ3PBH7RMGHNV2","bundle":"https://pith.science/pith/RGLRL5TSVB6KZZ3PBH7RMGHNV2/bundle.json","state":"https://pith.science/pith/RGLRL5TSVB6KZZ3PBH7RMGHNV2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RGLRL5TSVB6KZZ3PBH7RMGHNV2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:RGLRL5TSVB6KZZ3PBH7RMGHNV2","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":"042d09e88007db1a300c299b7a9a43874f4b1e3ffe4476bea066203bfdc3a054","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-12-04T10:27:32Z","title_canon_sha256":"8fe157ca7b8c14ea611558a868dfc5d0aace13281f5edf0e3c68fa939610b58f"},"schema_version":"1.0","source":{"id":"astro-ph/0012067","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0012067","created_at":"2026-05-18T04:23:01Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0012067v1","created_at":"2026-05-18T04:23:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0012067","created_at":"2026-05-18T04:23:01Z"},{"alias_kind":"pith_short_12","alias_value":"RGLRL5TSVB6K","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"RGLRL5TSVB6KZZ3P","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"RGLRL5TS","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:54ce6ce4794f47a502f9c7192f476ba4126db4e0626ab09833d591cbe31d26ee","target":"graph","created_at":"2026-05-18T04:23:01Z","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":"Using sensitive centimeter-wave receivers mounted on the Owens Valley Radio Observatory and Berkeley-Illinois-Maryland-Association millimeter arrays, we have obtained interferometric measurements of the Sunyaev-Zel'dovich (SZ) effect toward massive galaxy clusters. We use the SZ data to determine the pressure distribution of the cluster gas and, in combination with published X-ray temperatures, to infer the gas mass and total gravitational mass of 18 clusters. The gas mass fraction, f_g, is calculated for each cluster, and is extrapolated to the fiducial radius r_{500} using the results of num","authors_text":"Erik D. Reese, Gilbert P. Holder, John E. Carlstrom, Joseph J. Mohr, Laura Grego, Marshall K. Joy, & Sandeep Patel, William L. Holzapfel","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2000-12-04T10:27:32Z","title":"Galaxy Cluster Gas Mass Fractions from Sunyaev-Zel'dovich Effect Measurements: Constraints on Omega_M"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0012067","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":"sha256:4a1b8902239d41977049cbc3e2644611974ea039d46c2c7255393c311c6f2d7a","target":"record","created_at":"2026-05-18T04:23:01Z","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":"042d09e88007db1a300c299b7a9a43874f4b1e3ffe4476bea066203bfdc3a054","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-12-04T10:27:32Z","title_canon_sha256":"8fe157ca7b8c14ea611558a868dfc5d0aace13281f5edf0e3c68fa939610b58f"},"schema_version":"1.0","source":{"id":"astro-ph/0012067","kind":"arxiv","version":1}},"canonical_sha256":"899715f672a87cace76f09ff1618edaebe488ea194649f35105a03e76236f270","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"899715f672a87cace76f09ff1618edaebe488ea194649f35105a03e76236f270","first_computed_at":"2026-05-18T04:23:01.436856Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:23:01.436856Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Fk4iZ8pFsy9cb57KkRO7Jh8MBLzwlxsXMAMBNKpMPFROOwAB7fVfWYqhRIJysgial92KARAuL/BjXc3aBVV+Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:23:01.437395Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0012067","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4a1b8902239d41977049cbc3e2644611974ea039d46c2c7255393c311c6f2d7a","sha256:54ce6ce4794f47a502f9c7192f476ba4126db4e0626ab09833d591cbe31d26ee"],"state_sha256":"8d3565291a6fae5da0677b0b2b96eb37de8b50a7c0672c1979c93a64fdcee4f5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G1iIcUs0xBuiNrg9RuKytT4zTlSADD9M7Z+ghgBb22ZU6xmvhHay4M8GCe5wV0ts+7GjQEZ3Ob8tLsCnwMELCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T17:58:35.137933Z","bundle_sha256":"32027412fd6f2dec9c7c0c095b52912dc447c2a189d1e6ec554fc91641c49f50"}}