{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:H4W3VAZCRB3WUJZJUWLW7AB4WB","short_pith_number":"pith:H4W3VAZC","canonical_record":{"source":{"id":"0910.1234","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-07T12:51:24Z","cross_cats_sorted":[],"title_canon_sha256":"e644ba812774dc078eee027552a116c585e1a778326a24a45a1fcf529b011279","abstract_canon_sha256":"15c47c0c0901c35fefba808cda7de2870660733ab92fd2d3a5f5c9c3da1e81c5"},"schema_version":"1.0"},"canonical_sha256":"3f2dba832288776a2729a5976f803cb043823f3ef302e9b1ff34dd58c92e44a6","source":{"kind":"arxiv","id":"0910.1234","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.1234","created_at":"2026-05-18T02:11:25Z"},{"alias_kind":"arxiv_version","alias_value":"0910.1234v1","created_at":"2026-05-18T02:11:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.1234","created_at":"2026-05-18T02:11:25Z"},{"alias_kind":"pith_short_12","alias_value":"H4W3VAZCRB3W","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"H4W3VAZCRB3WUJZJ","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"H4W3VAZC","created_at":"2026-05-18T12:25:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:H4W3VAZCRB3WUJZJUWLW7AB4WB","target":"record","payload":{"canonical_record":{"source":{"id":"0910.1234","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-07T12:51:24Z","cross_cats_sorted":[],"title_canon_sha256":"e644ba812774dc078eee027552a116c585e1a778326a24a45a1fcf529b011279","abstract_canon_sha256":"15c47c0c0901c35fefba808cda7de2870660733ab92fd2d3a5f5c9c3da1e81c5"},"schema_version":"1.0"},"canonical_sha256":"3f2dba832288776a2729a5976f803cb043823f3ef302e9b1ff34dd58c92e44a6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:11:25.863333Z","signature_b64":"2sx4e55oU59ujpmlkCX/l1DTdVsrWW/bnC/T8x62fG9aWq88gAchNZX04KmrT+GjnC3mn2RJsgS5dA5hxzXlAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3f2dba832288776a2729a5976f803cb043823f3ef302e9b1ff34dd58c92e44a6","last_reissued_at":"2026-05-18T02:11:25.862638Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:11:25.862638Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0910.1234","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":"2026-05-18T02:11:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aCMeD65GtfQem1HekUjcUXMn/6VT+gx4TJfef1BgXgZ7j6nUw0VEH0juQCe+nCCTYt2pUsH0RUso15xBNONNCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T18:14:04.582929Z"},"content_sha256":"e0d3cdc267b79ddfb0f4d4cf5f9d2e758f0f93dc3a2f21ad2728cb4d47712328","schema_version":"1.0","event_id":"sha256:e0d3cdc267b79ddfb0f4d4cf5f9d2e758f0f93dc3a2f21ad2728cb4d47712328"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:H4W3VAZCRB3WUJZJUWLW7AB4WB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The universal galaxy cluster pressure profile from a representative sample of nearby systems (REXCESS) and the Y_SZ-M_500 relation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"2), E. Pointecouteau (4) ((1) Service d'Astrophysique CEA-Saclay, France), France (2) MPE Garching, Germany (3) University of Southampton, G.W. Pratt (1, H. Boehringer (2), J.H. Croston (3), M. Arnaud (1), R. Piffaretti (1), UK (4) CESR","submitted_at":"2009-10-07T12:51:24Z","abstract_excerpt":"(abridged) We investigate the regularity of cluster pressure profiles with REXCESS, a representative sample of 33 local clusters observed with XMM-Newton. The sample spans a mass range of 10^14 M_sun <M_500<10^15 M_sun. We derive an average profile from observations scaled by mass and z according to the standard self-similar model, and find that the dispersion about the mean is remarkably low beyond 0.2R_500, but increases towards the centre. Deviations about the mean are related to both the mass and the thermo-dynamical state of the cluster. Unrelaxed systems have systematically shallower pro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.1234","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":"2026-05-18T02:11:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5r7JBqzDJV0HjmAyhmzOgRkODsSHYTZsbrjfeG2ky0S6ULle9LaWT6XBODAa5oCQAGJgc6/7LeVJx22HTeJLDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T18:14:04.583603Z"},"content_sha256":"6e40e57818ba528c71adba49965724c1da43369ed155e428d284efb760719778","schema_version":"1.0","event_id":"sha256:6e40e57818ba528c71adba49965724c1da43369ed155e428d284efb760719778"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H4W3VAZCRB3WUJZJUWLW7AB4WB/bundle.json","state_url":"https://pith.science/pith/H4W3VAZCRB3WUJZJUWLW7AB4WB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H4W3VAZCRB3WUJZJUWLW7AB4WB/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":"2026-06-10T18:14:04Z","links":{"resolver":"https://pith.science/pith/H4W3VAZCRB3WUJZJUWLW7AB4WB","bundle":"https://pith.science/pith/H4W3VAZCRB3WUJZJUWLW7AB4WB/bundle.json","state":"https://pith.science/pith/H4W3VAZCRB3WUJZJUWLW7AB4WB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H4W3VAZCRB3WUJZJUWLW7AB4WB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:H4W3VAZCRB3WUJZJUWLW7AB4WB","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":"15c47c0c0901c35fefba808cda7de2870660733ab92fd2d3a5f5c9c3da1e81c5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-07T12:51:24Z","title_canon_sha256":"e644ba812774dc078eee027552a116c585e1a778326a24a45a1fcf529b011279"},"schema_version":"1.0","source":{"id":"0910.1234","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.1234","created_at":"2026-05-18T02:11:25Z"},{"alias_kind":"arxiv_version","alias_value":"0910.1234v1","created_at":"2026-05-18T02:11:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.1234","created_at":"2026-05-18T02:11:25Z"},{"alias_kind":"pith_short_12","alias_value":"H4W3VAZCRB3W","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"H4W3VAZCRB3WUJZJ","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"H4W3VAZC","created_at":"2026-05-18T12:25:59Z"}],"graph_snapshots":[{"event_id":"sha256:6e40e57818ba528c71adba49965724c1da43369ed155e428d284efb760719778","target":"graph","created_at":"2026-05-18T02:11:25Z","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":"(abridged) We investigate the regularity of cluster pressure profiles with REXCESS, a representative sample of 33 local clusters observed with XMM-Newton. The sample spans a mass range of 10^14 M_sun <M_500<10^15 M_sun. We derive an average profile from observations scaled by mass and z according to the standard self-similar model, and find that the dispersion about the mean is remarkably low beyond 0.2R_500, but increases towards the centre. Deviations about the mean are related to both the mass and the thermo-dynamical state of the cluster. Unrelaxed systems have systematically shallower pro","authors_text":"2), E. Pointecouteau (4) ((1) Service d'Astrophysique CEA-Saclay, France), France (2) MPE Garching, Germany (3) University of Southampton, G.W. Pratt (1, H. Boehringer (2), J.H. Croston (3), M. Arnaud (1), R. Piffaretti (1), UK (4) CESR","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-07T12:51:24Z","title":"The universal galaxy cluster pressure profile from a representative sample of nearby systems (REXCESS) and the Y_SZ-M_500 relation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.1234","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:e0d3cdc267b79ddfb0f4d4cf5f9d2e758f0f93dc3a2f21ad2728cb4d47712328","target":"record","created_at":"2026-05-18T02:11:25Z","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":"15c47c0c0901c35fefba808cda7de2870660733ab92fd2d3a5f5c9c3da1e81c5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-07T12:51:24Z","title_canon_sha256":"e644ba812774dc078eee027552a116c585e1a778326a24a45a1fcf529b011279"},"schema_version":"1.0","source":{"id":"0910.1234","kind":"arxiv","version":1}},"canonical_sha256":"3f2dba832288776a2729a5976f803cb043823f3ef302e9b1ff34dd58c92e44a6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3f2dba832288776a2729a5976f803cb043823f3ef302e9b1ff34dd58c92e44a6","first_computed_at":"2026-05-18T02:11:25.862638Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:11:25.862638Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2sx4e55oU59ujpmlkCX/l1DTdVsrWW/bnC/T8x62fG9aWq88gAchNZX04KmrT+GjnC3mn2RJsgS5dA5hxzXlAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:11:25.863333Z","signed_message":"canonical_sha256_bytes"},"source_id":"0910.1234","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e0d3cdc267b79ddfb0f4d4cf5f9d2e758f0f93dc3a2f21ad2728cb4d47712328","sha256:6e40e57818ba528c71adba49965724c1da43369ed155e428d284efb760719778"],"state_sha256":"ae58788040f8ab209e8a854e29665d611e5d762ad39ac563de6473cb54022cb8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5KfmXAkMyJB4wvsE0jT2YZoF3diXI6mUZQdo3whbbFmE3To7E1jtDdmHmE+ixZGVX5YNnPIDetccndG9Co1QAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T18:14:04.587091Z","bundle_sha256":"e0f033823fc7c0db2b187ad37751e4559d6110182e404d58f11d1af845900b04"}}