{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1995:Y5DAHGZ6EMUEMTM2SGXRKUWUQU","short_pith_number":"pith:Y5DAHGZ6","canonical_record":{"source":{"id":"astro-ph/9507092","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1995-07-24T10:37:52Z","cross_cats_sorted":[],"title_canon_sha256":"a43c8b212ca0c90c8fbd7bbd8bb9e8114c13a8299749618d63dc9941c6ffbf29","abstract_canon_sha256":"834416c0911a601c3562234f77e47fac8d34194f7899fb992771b22166cd9145"},"schema_version":"1.0"},"canonical_sha256":"c746039b3e2328464d9a91af1552d485283ccbd45cebd9aa151f83c9025b9373","source":{"kind":"arxiv","id":"astro-ph/9507092","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9507092","created_at":"2026-05-18T01:40:22Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9507092v1","created_at":"2026-05-18T01:40:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9507092","created_at":"2026-05-18T01:40:22Z"},{"alias_kind":"pith_short_12","alias_value":"Y5DAHGZ6EMUE","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"Y5DAHGZ6EMUEMTM2","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"Y5DAHGZ6","created_at":"2026-05-18T12:25:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1995:Y5DAHGZ6EMUEMTM2SGXRKUWUQU","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9507092","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1995-07-24T10:37:52Z","cross_cats_sorted":[],"title_canon_sha256":"a43c8b212ca0c90c8fbd7bbd8bb9e8114c13a8299749618d63dc9941c6ffbf29","abstract_canon_sha256":"834416c0911a601c3562234f77e47fac8d34194f7899fb992771b22166cd9145"},"schema_version":"1.0"},"canonical_sha256":"c746039b3e2328464d9a91af1552d485283ccbd45cebd9aa151f83c9025b9373","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:22.919209Z","signature_b64":"coPxgZtksq8tpZrQYensnDfsqvK7AEUif6XuI7SzP79zBaPi9OWpvop1uEnK0uSORSeSMSBp3Zk2SnDb2F3oAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c746039b3e2328464d9a91af1552d485283ccbd45cebd9aa151f83c9025b9373","last_reissued_at":"2026-05-18T01:40:22.918547Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:22.918547Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9507092","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":"2026-05-18T01:40:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q8Ei41bPlXSnUR5eYsFNCxCII5qqowVdua/LspaqBFps/6HqtnwkHpMEs3dHhjXQYSbAvLZ5JfqFGtZqv8CSDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T20:39:10.704905Z"},"content_sha256":"6444d3eaf5705dfa1e78e1a056a75e523f443cf60e5044c729906532dfeb474a","schema_version":"1.0","event_id":"sha256:6444d3eaf5705dfa1e78e1a056a75e523f443cf60e5044c729906532dfeb474a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1995:Y5DAHGZ6EMUEMTM2SGXRKUWUQU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A 2572 and HCG 94 - galaxy clusters but not as we know them. An X-ray case study of optical misclassifications","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"C. Mendes de Oliveira, D.A. White, H. Ebeling","submitted_at":"1995-07-24T10:37:52Z","abstract_excerpt":"We present the results of a spectral-imaging analysis of X-ray data obtained with the Position Sensitive Proportional Counter aboard the ROSAT Observatory in a 32 ks pointed observation of Hickson's Compact Group (HCG) #94. Besides HCG94, A2572, a richness class 0 Abell cluster, is also contained in the central region of the field of view.\n Both systems are at a redshift of z~0.04 and are falling toward each other at a velocity of about 1000 km/s. Their three-dimensional spatial separation is probably of the order of an Abell radius; however, as yet, no clear signs of dynamical interaction are"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9507092","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":"2026-05-18T01:40:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+5d5eAR/usxw5AUDs45qPF6tr4+gHHiwCuMulnLBwDWuSVe/UdwApfb5pHDVhptQT2BvFQVu45JiyHFPeeEkCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T20:39:10.705277Z"},"content_sha256":"9e089797eb61899f8fef21a65776e989c418a1ceeaa5a3d5f5c5efbcd7505a09","schema_version":"1.0","event_id":"sha256:9e089797eb61899f8fef21a65776e989c418a1ceeaa5a3d5f5c5efbcd7505a09"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Y5DAHGZ6EMUEMTM2SGXRKUWUQU/bundle.json","state_url":"https://pith.science/pith/Y5DAHGZ6EMUEMTM2SGXRKUWUQU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Y5DAHGZ6EMUEMTM2SGXRKUWUQU/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":"2026-06-02T20:39:10Z","links":{"resolver":"https://pith.science/pith/Y5DAHGZ6EMUEMTM2SGXRKUWUQU","bundle":"https://pith.science/pith/Y5DAHGZ6EMUEMTM2SGXRKUWUQU/bundle.json","state":"https://pith.science/pith/Y5DAHGZ6EMUEMTM2SGXRKUWUQU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Y5DAHGZ6EMUEMTM2SGXRKUWUQU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1995:Y5DAHGZ6EMUEMTM2SGXRKUWUQU","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":"834416c0911a601c3562234f77e47fac8d34194f7899fb992771b22166cd9145","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1995-07-24T10:37:52Z","title_canon_sha256":"a43c8b212ca0c90c8fbd7bbd8bb9e8114c13a8299749618d63dc9941c6ffbf29"},"schema_version":"1.0","source":{"id":"astro-ph/9507092","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9507092","created_at":"2026-05-18T01:40:22Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9507092v1","created_at":"2026-05-18T01:40:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9507092","created_at":"2026-05-18T01:40:22Z"},{"alias_kind":"pith_short_12","alias_value":"Y5DAHGZ6EMUE","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"Y5DAHGZ6EMUEMTM2","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"Y5DAHGZ6","created_at":"2026-05-18T12:25:47Z"}],"graph_snapshots":[{"event_id":"sha256:9e089797eb61899f8fef21a65776e989c418a1ceeaa5a3d5f5c5efbcd7505a09","target":"graph","created_at":"2026-05-18T01:40:22Z","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":"We present the results of a spectral-imaging analysis of X-ray data obtained with the Position Sensitive Proportional Counter aboard the ROSAT Observatory in a 32 ks pointed observation of Hickson's Compact Group (HCG) #94. Besides HCG94, A2572, a richness class 0 Abell cluster, is also contained in the central region of the field of view.\n Both systems are at a redshift of z~0.04 and are falling toward each other at a velocity of about 1000 km/s. Their three-dimensional spatial separation is probably of the order of an Abell radius; however, as yet, no clear signs of dynamical interaction are","authors_text":"C. Mendes de Oliveira, D.A. White, H. Ebeling","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1995-07-24T10:37:52Z","title":"A 2572 and HCG 94 - galaxy clusters but not as we know them. An X-ray case study of optical misclassifications"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9507092","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":"sha256:6444d3eaf5705dfa1e78e1a056a75e523f443cf60e5044c729906532dfeb474a","target":"record","created_at":"2026-05-18T01:40:22Z","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":"834416c0911a601c3562234f77e47fac8d34194f7899fb992771b22166cd9145","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1995-07-24T10:37:52Z","title_canon_sha256":"a43c8b212ca0c90c8fbd7bbd8bb9e8114c13a8299749618d63dc9941c6ffbf29"},"schema_version":"1.0","source":{"id":"astro-ph/9507092","kind":"arxiv","version":1}},"canonical_sha256":"c746039b3e2328464d9a91af1552d485283ccbd45cebd9aa151f83c9025b9373","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c746039b3e2328464d9a91af1552d485283ccbd45cebd9aa151f83c9025b9373","first_computed_at":"2026-05-18T01:40:22.918547Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:22.918547Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"coPxgZtksq8tpZrQYensnDfsqvK7AEUif6XuI7SzP79zBaPi9OWpvop1uEnK0uSORSeSMSBp3Zk2SnDb2F3oAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:22.919209Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9507092","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6444d3eaf5705dfa1e78e1a056a75e523f443cf60e5044c729906532dfeb474a","sha256:9e089797eb61899f8fef21a65776e989c418a1ceeaa5a3d5f5c5efbcd7505a09"],"state_sha256":"4de16858f6160720ee8137e8d425511ced5fe66813b4a2c94861d014a08283ab"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zolEBIuTdWJ17Y2WJe65DAzBElkurzPee1gy91YwNvL55x6Dqd8aqKInGwqL9phS5CB/T2BKK2jN8DdXyEHODA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T20:39:10.707286Z","bundle_sha256":"6793e176a0455bda3d508b4cbc66d69414c850fb3ad350ada60e37b2cd0220d2"}}