{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:BLYTRPV65ZYJ4G67AZZ3JSVENV","short_pith_number":"pith:BLYTRPV6","canonical_record":{"source":{"id":"astro-ph/0701553","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-01-19T09:02:44Z","cross_cats_sorted":[],"title_canon_sha256":"c56ed0b131db5b776290457f077a7bd6f9c395ef74bd0351b1c210905e93d95a","abstract_canon_sha256":"234fa7599e7c3ddab36bc5b6fb2cd7ec2578245a4ee31133c92c732cec3efd78"},"schema_version":"1.0"},"canonical_sha256":"0af138bebeee709e1bdf0673b4caa46d738f5e7f9c8b648e572dacbb02517e2b","source":{"kind":"arxiv","id":"astro-ph/0701553","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0701553","created_at":"2026-07-04T14:59:04Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0701553v1","created_at":"2026-07-04T14:59:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0701553","created_at":"2026-07-04T14:59:04Z"},{"alias_kind":"pith_short_12","alias_value":"BLYTRPV65ZYJ","created_at":"2026-07-04T14:59:04Z"},{"alias_kind":"pith_short_16","alias_value":"BLYTRPV65ZYJ4G67","created_at":"2026-07-04T14:59:04Z"},{"alias_kind":"pith_short_8","alias_value":"BLYTRPV6","created_at":"2026-07-04T14:59:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:BLYTRPV65ZYJ4G67AZZ3JSVENV","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0701553","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-01-19T09:02:44Z","cross_cats_sorted":[],"title_canon_sha256":"c56ed0b131db5b776290457f077a7bd6f9c395ef74bd0351b1c210905e93d95a","abstract_canon_sha256":"234fa7599e7c3ddab36bc5b6fb2cd7ec2578245a4ee31133c92c732cec3efd78"},"schema_version":"1.0"},"canonical_sha256":"0af138bebeee709e1bdf0673b4caa46d738f5e7f9c8b648e572dacbb02517e2b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:59:04.124872Z","signature_b64":"feJlSGKV+PNDulQXIIzw7Me3HfACh3uTV+MGuG7r5Pxdpkr/b1TBb3+2Oek3qIGZPROigXrliH4YTTgcuY7fDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0af138bebeee709e1bdf0673b4caa46d738f5e7f9c8b648e572dacbb02517e2b","last_reissued_at":"2026-07-04T14:59:04.124487Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:59:04.124487Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0701553","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":"2026-07-04T14:59:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dRTbrtoyZcGAltqmQpZqIClhAn294/KHTEfomI9tNAR8TtH9+jO8j0M4Q31CZ1xyemu3AffjD7WCPIw8EDcgBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T18:32:05.798006Z"},"content_sha256":"135da92ab34db5541397cda0532f07f386009767272f50905df31f194c9f714b","schema_version":"1.0","event_id":"sha256:135da92ab34db5541397cda0532f07f386009767272f50905df31f194c9f714b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:BLYTRPV65ZYJ4G67AZZ3JSVENV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Constraining supernova models using the hot gas in clusters of galaxies","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Jacco Vink, J.A.M. Bleeker, J. de Plaa, J.S. Kaastra, M. Mendez, N. Werner","submitted_at":"2007-01-19T09:02:44Z","abstract_excerpt":"The hot Intra-Cluster Medium (ICM) in clusters of galaxies is a very large repository of metals produced by supernovae. We aim to accurately measure the abundances in the ICM of many clusters and compare these data with metal yields produced by supernovae. Using the data archive of the XMM-Newton X-ray observatory, we compile a sample of 22 clusters. We fit spectra extracted from the core regions and determine the abundances of silicon, sulfur, argon, alcium, iron, and nickel. The abundances from the spectral fits are subsequently fitted to supernova yields determined from several supernova ty"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0701553","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0701553/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T14:59:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CrFAT1p7GKxMZhQklsOIdsVUk4kva9LcO65ZRdKiF8jMes1peca3BGekQEDsP8KOVL8wHOZUbwK8lx7IcXx4AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T18:32:05.798888Z"},"content_sha256":"cf444be8072240cb0624fefd2bd1955ff76b7441d4c865e3929c73c6ccb0ffc7","schema_version":"1.0","event_id":"sha256:cf444be8072240cb0624fefd2bd1955ff76b7441d4c865e3929c73c6ccb0ffc7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BLYTRPV65ZYJ4G67AZZ3JSVENV/bundle.json","state_url":"https://pith.science/pith/BLYTRPV65ZYJ4G67AZZ3JSVENV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BLYTRPV65ZYJ4G67AZZ3JSVENV/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":"2026-08-07T18:32:05Z","links":{"resolver":"https://pith.science/pith/BLYTRPV65ZYJ4G67AZZ3JSVENV","bundle":"https://pith.science/pith/BLYTRPV65ZYJ4G67AZZ3JSVENV/bundle.json","state":"https://pith.science/pith/BLYTRPV65ZYJ4G67AZZ3JSVENV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BLYTRPV65ZYJ4G67AZZ3JSVENV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:BLYTRPV65ZYJ4G67AZZ3JSVENV","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":"234fa7599e7c3ddab36bc5b6fb2cd7ec2578245a4ee31133c92c732cec3efd78","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-01-19T09:02:44Z","title_canon_sha256":"c56ed0b131db5b776290457f077a7bd6f9c395ef74bd0351b1c210905e93d95a"},"schema_version":"1.0","source":{"id":"astro-ph/0701553","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0701553","created_at":"2026-07-04T14:59:04Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0701553v1","created_at":"2026-07-04T14:59:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0701553","created_at":"2026-07-04T14:59:04Z"},{"alias_kind":"pith_short_12","alias_value":"BLYTRPV65ZYJ","created_at":"2026-07-04T14:59:04Z"},{"alias_kind":"pith_short_16","alias_value":"BLYTRPV65ZYJ4G67","created_at":"2026-07-04T14:59:04Z"},{"alias_kind":"pith_short_8","alias_value":"BLYTRPV6","created_at":"2026-07-04T14:59:04Z"}],"graph_snapshots":[{"event_id":"sha256:cf444be8072240cb0624fefd2bd1955ff76b7441d4c865e3929c73c6ccb0ffc7","target":"graph","created_at":"2026-07-04T14:59:04Z","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/0701553/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The hot Intra-Cluster Medium (ICM) in clusters of galaxies is a very large repository of metals produced by supernovae. We aim to accurately measure the abundances in the ICM of many clusters and compare these data with metal yields produced by supernovae. Using the data archive of the XMM-Newton X-ray observatory, we compile a sample of 22 clusters. We fit spectra extracted from the core regions and determine the abundances of silicon, sulfur, argon, alcium, iron, and nickel. The abundances from the spectral fits are subsequently fitted to supernova yields determined from several supernova ty","authors_text":"Jacco Vink, J.A.M. Bleeker, J. de Plaa, J.S. Kaastra, M. Mendez, N. Werner","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-01-19T09:02:44Z","title":"Constraining supernova models using the hot gas in clusters of galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0701553","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":"sha256:135da92ab34db5541397cda0532f07f386009767272f50905df31f194c9f714b","target":"record","created_at":"2026-07-04T14:59:04Z","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":"234fa7599e7c3ddab36bc5b6fb2cd7ec2578245a4ee31133c92c732cec3efd78","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-01-19T09:02:44Z","title_canon_sha256":"c56ed0b131db5b776290457f077a7bd6f9c395ef74bd0351b1c210905e93d95a"},"schema_version":"1.0","source":{"id":"astro-ph/0701553","kind":"arxiv","version":1}},"canonical_sha256":"0af138bebeee709e1bdf0673b4caa46d738f5e7f9c8b648e572dacbb02517e2b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0af138bebeee709e1bdf0673b4caa46d738f5e7f9c8b648e572dacbb02517e2b","first_computed_at":"2026-07-04T14:59:04.124487Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:59:04.124487Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"feJlSGKV+PNDulQXIIzw7Me3HfACh3uTV+MGuG7r5Pxdpkr/b1TBb3+2Oek3qIGZPROigXrliH4YTTgcuY7fDg==","signature_status":"signed_v1","signed_at":"2026-07-04T14:59:04.124872Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0701553","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:135da92ab34db5541397cda0532f07f386009767272f50905df31f194c9f714b","sha256:cf444be8072240cb0624fefd2bd1955ff76b7441d4c865e3929c73c6ccb0ffc7"],"state_sha256":"3deffd85b65aa7683e98982553a9fba5e1328c0b605c42af274496ad64c454d4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Lmaag/BfvulS0ix42cYVxYH9xa1iKykbHJppJ5ARgp9PJopeM0kaFTnjP9Z5CxGVFr/NNMjNo4p0WbMG3TSmCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T18:32:05.804695Z","bundle_sha256":"7574bc7e7cd85ead6b442033bd3b6b1573e18b3474c3cd86226e24635f321712"}}