{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:RPP3UZBN4IFB5QG27IYJKHI3P2","short_pith_number":"pith:RPP3UZBN","canonical_record":{"source":{"id":"1006.3255","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-06-16T15:58:12Z","cross_cats_sorted":[],"title_canon_sha256":"2c17637d2b333eda0585bd0eb5801dd52de22e9b7b2861ba6a06a8dfbde7681e","abstract_canon_sha256":"b63d97568fbadba2d4fae7113dc5654122579b3554ce8d1689121acea6384f1f"},"schema_version":"1.0"},"canonical_sha256":"8bdfba642de20a1ec0dafa30951d1b7eb40403721458def6d3055b9643afe737","source":{"kind":"arxiv","id":"1006.3255","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1006.3255","created_at":"2026-05-18T04:38:15Z"},{"alias_kind":"arxiv_version","alias_value":"1006.3255v2","created_at":"2026-05-18T04:38:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1006.3255","created_at":"2026-05-18T04:38:15Z"},{"alias_kind":"pith_short_12","alias_value":"RPP3UZBN4IFB","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"RPP3UZBN4IFB5QG2","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"RPP3UZBN","created_at":"2026-05-18T12:26:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:RPP3UZBN4IFB5QG27IYJKHI3P2","target":"record","payload":{"canonical_record":{"source":{"id":"1006.3255","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-06-16T15:58:12Z","cross_cats_sorted":[],"title_canon_sha256":"2c17637d2b333eda0585bd0eb5801dd52de22e9b7b2861ba6a06a8dfbde7681e","abstract_canon_sha256":"b63d97568fbadba2d4fae7113dc5654122579b3554ce8d1689121acea6384f1f"},"schema_version":"1.0"},"canonical_sha256":"8bdfba642de20a1ec0dafa30951d1b7eb40403721458def6d3055b9643afe737","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:38:15.368697Z","signature_b64":"nRLlXaS1SLNFgYbiLozZTxEyCROafk3S15RvPUesWSOFY5WFY6KVSmDabbtCVFNR+QOhJPev+L+01UcVHXFxAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8bdfba642de20a1ec0dafa30951d1b7eb40403721458def6d3055b9643afe737","last_reissued_at":"2026-05-18T04:38:15.368133Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:38:15.368133Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1006.3255","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":"2026-05-18T04:38:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7wUxX39wchmigcUrzUcg3zyQumD94v0L0Bkw2rg1Hm/kJ7+Nj+N+ipyWcU1nZdsf9REHDKjKpYFs6xMvt3oLDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T21:26:22.105425Z"},"content_sha256":"976c451c52490c7a9d7e01883b4097c6fc871c348d2edf4eb24e26637a0c44fe","schema_version":"1.0","event_id":"sha256:976c451c52490c7a9d7e01883b4097c6fc871c348d2edf4eb24e26637a0c44fe"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:RPP3UZBN4IFB5QG27IYJKHI3P2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Apparent high metallicity in 3-4 keV galaxy clusters: the inverse iron-bias in action in the case of the merging cluster Abell 2028","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"(10) INAF-OA Trieste), 2), (2) UC Irvine, (3) INAF-OA Bologna, 4), (4) INFN Bologna, (5) MPE-Garching, (6) Universita' di Bologna, 7), (7) UC Santa Cruz, (8) INAF - OA Brera, 9), (9) CfA, D.A. Buote (2), F. Brighenti (6, F. Gastaldello (1, I. Balestra (5), M. Gitti (3, P. Tozzi (10) ((1) INAF-IASF Milano, S. De Grandi (8), S. Ettori (3, S. Ghizzardi (1)","submitted_at":"2010-06-16T15:58:12Z","abstract_excerpt":"Recent work based on a global measurement of the ICM properties find evidence for an increase of the iron abundance in galaxy clusters with temperature around 2-4 keV up to a value about 3 times larger than that typical of very hot clusters. We have started a study of the metal distribution in these objects from the sample of Baumgartner et al. (2005), aiming at resolving spatially the metal content of the ICM. We report here on a 42ks XMM observation of the first object of the sample, the cluster Abell 2028. The XMM observation reveals a complex structure of the cluster over scale of 300 kpc,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1006.3255","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":"2026-05-18T04:38:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rpAnjJte2+cT9KXSqNs/NtPKG8l+RUv3Zw50WNiU2C9eFkA54k0IBxr07AKdKSm7v3gd2ee3pFaN89V0rGj/Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T21:26:22.106127Z"},"content_sha256":"eab5603795550fd252646b3c7930da75e2d2058bab6abd3c72d32f86346d5678","schema_version":"1.0","event_id":"sha256:eab5603795550fd252646b3c7930da75e2d2058bab6abd3c72d32f86346d5678"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RPP3UZBN4IFB5QG27IYJKHI3P2/bundle.json","state_url":"https://pith.science/pith/RPP3UZBN4IFB5QG27IYJKHI3P2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RPP3UZBN4IFB5QG27IYJKHI3P2/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":"2026-05-28T21:26:22Z","links":{"resolver":"https://pith.science/pith/RPP3UZBN4IFB5QG27IYJKHI3P2","bundle":"https://pith.science/pith/RPP3UZBN4IFB5QG27IYJKHI3P2/bundle.json","state":"https://pith.science/pith/RPP3UZBN4IFB5QG27IYJKHI3P2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RPP3UZBN4IFB5QG27IYJKHI3P2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:RPP3UZBN4IFB5QG27IYJKHI3P2","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":"b63d97568fbadba2d4fae7113dc5654122579b3554ce8d1689121acea6384f1f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-06-16T15:58:12Z","title_canon_sha256":"2c17637d2b333eda0585bd0eb5801dd52de22e9b7b2861ba6a06a8dfbde7681e"},"schema_version":"1.0","source":{"id":"1006.3255","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1006.3255","created_at":"2026-05-18T04:38:15Z"},{"alias_kind":"arxiv_version","alias_value":"1006.3255v2","created_at":"2026-05-18T04:38:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1006.3255","created_at":"2026-05-18T04:38:15Z"},{"alias_kind":"pith_short_12","alias_value":"RPP3UZBN4IFB","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"RPP3UZBN4IFB5QG2","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"RPP3UZBN","created_at":"2026-05-18T12:26:13Z"}],"graph_snapshots":[{"event_id":"sha256:eab5603795550fd252646b3c7930da75e2d2058bab6abd3c72d32f86346d5678","target":"graph","created_at":"2026-05-18T04:38:15Z","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":"Recent work based on a global measurement of the ICM properties find evidence for an increase of the iron abundance in galaxy clusters with temperature around 2-4 keV up to a value about 3 times larger than that typical of very hot clusters. We have started a study of the metal distribution in these objects from the sample of Baumgartner et al. (2005), aiming at resolving spatially the metal content of the ICM. We report here on a 42ks XMM observation of the first object of the sample, the cluster Abell 2028. The XMM observation reveals a complex structure of the cluster over scale of 300 kpc,","authors_text":"(10) INAF-OA Trieste), 2), (2) UC Irvine, (3) INAF-OA Bologna, 4), (4) INFN Bologna, (5) MPE-Garching, (6) Universita' di Bologna, 7), (7) UC Santa Cruz, (8) INAF - OA Brera, 9), (9) CfA, D.A. Buote (2), F. Brighenti (6, F. Gastaldello (1, I. Balestra (5), M. Gitti (3, P. Tozzi (10) ((1) INAF-IASF Milano, S. De Grandi (8), S. Ettori (3, S. Ghizzardi (1)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-06-16T15:58:12Z","title":"Apparent high metallicity in 3-4 keV galaxy clusters: the inverse iron-bias in action in the case of the merging cluster Abell 2028"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1006.3255","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":"sha256:976c451c52490c7a9d7e01883b4097c6fc871c348d2edf4eb24e26637a0c44fe","target":"record","created_at":"2026-05-18T04:38:15Z","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":"b63d97568fbadba2d4fae7113dc5654122579b3554ce8d1689121acea6384f1f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-06-16T15:58:12Z","title_canon_sha256":"2c17637d2b333eda0585bd0eb5801dd52de22e9b7b2861ba6a06a8dfbde7681e"},"schema_version":"1.0","source":{"id":"1006.3255","kind":"arxiv","version":2}},"canonical_sha256":"8bdfba642de20a1ec0dafa30951d1b7eb40403721458def6d3055b9643afe737","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8bdfba642de20a1ec0dafa30951d1b7eb40403721458def6d3055b9643afe737","first_computed_at":"2026-05-18T04:38:15.368133Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:38:15.368133Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nRLlXaS1SLNFgYbiLozZTxEyCROafk3S15RvPUesWSOFY5WFY6KVSmDabbtCVFNR+QOhJPev+L+01UcVHXFxAw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:38:15.368697Z","signed_message":"canonical_sha256_bytes"},"source_id":"1006.3255","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:976c451c52490c7a9d7e01883b4097c6fc871c348d2edf4eb24e26637a0c44fe","sha256:eab5603795550fd252646b3c7930da75e2d2058bab6abd3c72d32f86346d5678"],"state_sha256":"df8300c6c03cf6ceab43ab5f3300509ebe2fa14e22a4c1057e4784ef1907ca45"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1G/a/OR68hCpf7lOefSxSKkwIj1RsKvuljNyFlcvI7Jv9pIHjFPcavk8Q6Tz42WMXZUdl+DqtIp5dNbE8v/2CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T21:26:22.108860Z","bundle_sha256":"0fdfa397fbd66da0a42e6acde3b08e2ef8622cea40790338f425cc7054326990"}}