{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:6K5SIARZNG4DZWDWTOBK6KQ4NT","short_pith_number":"pith:6K5SIARZ","canonical_record":{"source":{"id":"0811.2793","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-11-18T10:39:24Z","cross_cats_sorted":[],"title_canon_sha256":"82b0b4c2837c6ed449d912b4cde2ec2e58126fec48192db886a15da96f520dd5","abstract_canon_sha256":"043d95db84df0028bf4ace211527b66a28918d51c2966b7396f4b26d23254b80"},"schema_version":"1.0"},"canonical_sha256":"f2bb24023969b83cd8769b82af2a1c6ccccbd1f2240dbc7ff9eceb7a2d02c5c6","source":{"kind":"arxiv","id":"0811.2793","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0811.2793","created_at":"2026-05-18T04:29:25Z"},{"alias_kind":"arxiv_version","alias_value":"0811.2793v1","created_at":"2026-05-18T04:29:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0811.2793","created_at":"2026-05-18T04:29:25Z"},{"alias_kind":"pith_short_12","alias_value":"6K5SIARZNG4D","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_16","alias_value":"6K5SIARZNG4DZWDW","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_8","alias_value":"6K5SIARZ","created_at":"2026-05-18T12:25:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:6K5SIARZNG4DZWDWTOBK6KQ4NT","target":"record","payload":{"canonical_record":{"source":{"id":"0811.2793","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-11-18T10:39:24Z","cross_cats_sorted":[],"title_canon_sha256":"82b0b4c2837c6ed449d912b4cde2ec2e58126fec48192db886a15da96f520dd5","abstract_canon_sha256":"043d95db84df0028bf4ace211527b66a28918d51c2966b7396f4b26d23254b80"},"schema_version":"1.0"},"canonical_sha256":"f2bb24023969b83cd8769b82af2a1c6ccccbd1f2240dbc7ff9eceb7a2d02c5c6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:29:25.013149Z","signature_b64":"9/jisto0rWOTfWwI7vGBKzibkZfasU70PX4Dia2Zk2SDcseLfF+S+GJSUT7WyNev4HhcN3j5lD7aMKmzg4nVAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f2bb24023969b83cd8769b82af2a1c6ccccbd1f2240dbc7ff9eceb7a2d02c5c6","last_reissued_at":"2026-05-18T04:29:25.012471Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:29:25.012471Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0811.2793","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":"2026-05-18T04:29:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aBRonSF3CXX12ldnW8zcwCMASChZL203z411ymEVqaDDlBBLC6YNnmVw97xcOvw60X2IoQ5QhgukHgFUfao3Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:47:38.038841Z"},"content_sha256":"eb98d9da865fab046f8a64828c09101c6c2c753d25923322458b02beceb3b928","schema_version":"1.0","event_id":"sha256:eb98d9da865fab046f8a64828c09101c6c2c753d25923322458b02beceb3b928"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:6K5SIARZNG4DZWDWTOBK6KQ4NT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Resolving the discrepancy between lensing and X-ray mass estimates of the complex galaxy cluster Abell 1689","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"2), (2) Laboratoire d'Astrophysique de Toulouse-Tarbes, (3) University of Oslo), Copenhagen, Danka Paraficz (1), Desiree Della Monica Ferreira (1), Haakon Dahle (3) ((1) Dark Cosmology Centre, Kristian Pedersen (1), Marceau Limousin (1, Signe Riemer-Sorensen (1)","submitted_at":"2008-11-18T10:39:24Z","abstract_excerpt":"There is a long-standing discrepancy between galaxy cluster masses determined from X-ray and gravitational lensing observations of which Abell 1689 is a well-studied example. In this work we take advantage of 180 ks of Chandra X-ray observations and a new weak gravitational study based on a Hubble Space Telescope mosaic covering the central 1.8 Mpc x 1.4 Mpc to eliminate the mass discrepancy. In contrast to earlier X-ray analyses where the very circular surface brightness has been inferred as Abell 1689 being spherically symmetric and in hydrostatic equilibrium, a hardness ratio map analysis r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0811.2793","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":"2026-05-18T04:29:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b7HUK31yIKVGvwvqr7Bl/zC8Pe4ONiJyggM0hLkc18yvkkQS1/xeMhRPpZ7OA6KQmjkDMC7/5fBB9jiMbjaOBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:47:38.039412Z"},"content_sha256":"85968a6f200ba83f640489c184163e925df76130469c3552f00d83365839ed14","schema_version":"1.0","event_id":"sha256:85968a6f200ba83f640489c184163e925df76130469c3552f00d83365839ed14"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6K5SIARZNG4DZWDWTOBK6KQ4NT/bundle.json","state_url":"https://pith.science/pith/6K5SIARZNG4DZWDWTOBK6KQ4NT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6K5SIARZNG4DZWDWTOBK6KQ4NT/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":"2026-05-25T21:47:38Z","links":{"resolver":"https://pith.science/pith/6K5SIARZNG4DZWDWTOBK6KQ4NT","bundle":"https://pith.science/pith/6K5SIARZNG4DZWDWTOBK6KQ4NT/bundle.json","state":"https://pith.science/pith/6K5SIARZNG4DZWDWTOBK6KQ4NT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6K5SIARZNG4DZWDWTOBK6KQ4NT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:6K5SIARZNG4DZWDWTOBK6KQ4NT","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":"043d95db84df0028bf4ace211527b66a28918d51c2966b7396f4b26d23254b80","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-11-18T10:39:24Z","title_canon_sha256":"82b0b4c2837c6ed449d912b4cde2ec2e58126fec48192db886a15da96f520dd5"},"schema_version":"1.0","source":{"id":"0811.2793","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0811.2793","created_at":"2026-05-18T04:29:25Z"},{"alias_kind":"arxiv_version","alias_value":"0811.2793v1","created_at":"2026-05-18T04:29:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0811.2793","created_at":"2026-05-18T04:29:25Z"},{"alias_kind":"pith_short_12","alias_value":"6K5SIARZNG4D","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_16","alias_value":"6K5SIARZNG4DZWDW","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_8","alias_value":"6K5SIARZ","created_at":"2026-05-18T12:25:56Z"}],"graph_snapshots":[{"event_id":"sha256:85968a6f200ba83f640489c184163e925df76130469c3552f00d83365839ed14","target":"graph","created_at":"2026-05-18T04:29:25Z","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":"There is a long-standing discrepancy between galaxy cluster masses determined from X-ray and gravitational lensing observations of which Abell 1689 is a well-studied example. In this work we take advantage of 180 ks of Chandra X-ray observations and a new weak gravitational study based on a Hubble Space Telescope mosaic covering the central 1.8 Mpc x 1.4 Mpc to eliminate the mass discrepancy. In contrast to earlier X-ray analyses where the very circular surface brightness has been inferred as Abell 1689 being spherically symmetric and in hydrostatic equilibrium, a hardness ratio map analysis r","authors_text":"2), (2) Laboratoire d'Astrophysique de Toulouse-Tarbes, (3) University of Oslo), Copenhagen, Danka Paraficz (1), Desiree Della Monica Ferreira (1), Haakon Dahle (3) ((1) Dark Cosmology Centre, Kristian Pedersen (1), Marceau Limousin (1, Signe Riemer-Sorensen (1)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-11-18T10:39:24Z","title":"Resolving the discrepancy between lensing and X-ray mass estimates of the complex galaxy cluster Abell 1689"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0811.2793","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:eb98d9da865fab046f8a64828c09101c6c2c753d25923322458b02beceb3b928","target":"record","created_at":"2026-05-18T04:29:25Z","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":"043d95db84df0028bf4ace211527b66a28918d51c2966b7396f4b26d23254b80","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-11-18T10:39:24Z","title_canon_sha256":"82b0b4c2837c6ed449d912b4cde2ec2e58126fec48192db886a15da96f520dd5"},"schema_version":"1.0","source":{"id":"0811.2793","kind":"arxiv","version":1}},"canonical_sha256":"f2bb24023969b83cd8769b82af2a1c6ccccbd1f2240dbc7ff9eceb7a2d02c5c6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f2bb24023969b83cd8769b82af2a1c6ccccbd1f2240dbc7ff9eceb7a2d02c5c6","first_computed_at":"2026-05-18T04:29:25.012471Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:29:25.012471Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9/jisto0rWOTfWwI7vGBKzibkZfasU70PX4Dia2Zk2SDcseLfF+S+GJSUT7WyNev4HhcN3j5lD7aMKmzg4nVAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:29:25.013149Z","signed_message":"canonical_sha256_bytes"},"source_id":"0811.2793","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eb98d9da865fab046f8a64828c09101c6c2c753d25923322458b02beceb3b928","sha256:85968a6f200ba83f640489c184163e925df76130469c3552f00d83365839ed14"],"state_sha256":"04de76a8b3da7687f0cc1668746e03e83e29a5d0a47cc18042cdceec11d8c6f9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aac2493ePCojT7MuC50Q/l9Ykd375bD98IKWGM1D+iTu6heyFKC5EjcgF7h6zb5RBici0CKd5EbXxAbPzsWqCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T21:47:38.042996Z","bundle_sha256":"4b303d1d25b4a0456cdea2ea1aa8ffb82ba0b05d23d8b65bf51b06b2ce688f5f"}}