{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:F2SOPR7WRUHKZ7XS3ZN2C5LAHS","short_pith_number":"pith:F2SOPR7W","canonical_record":{"source":{"id":"1510.05951","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-10-20T16:31:21Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"61d608e017f0007d79a5ba75a19ac88fdc5bd8282f9d22fd0c74ce28396e43f6","abstract_canon_sha256":"da4e3c18ba22acbf46ad974cb66736c962220fcb76b7862d623ab59c138559d2"},"schema_version":"1.0"},"canonical_sha256":"2ea4e7c7f68d0eacfef2de5ba175603c90b9ad7e8d36018d626192b883862625","source":{"kind":"arxiv","id":"1510.05951","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.05951","created_at":"2026-05-18T01:21:52Z"},{"alias_kind":"arxiv_version","alias_value":"1510.05951v2","created_at":"2026-05-18T01:21:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.05951","created_at":"2026-05-18T01:21:52Z"},{"alias_kind":"pith_short_12","alias_value":"F2SOPR7WRUHK","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"F2SOPR7WRUHKZ7XS","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"F2SOPR7W","created_at":"2026-05-18T12:29:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:F2SOPR7WRUHKZ7XS3ZN2C5LAHS","target":"record","payload":{"canonical_record":{"source":{"id":"1510.05951","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-10-20T16:31:21Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"61d608e017f0007d79a5ba75a19ac88fdc5bd8282f9d22fd0c74ce28396e43f6","abstract_canon_sha256":"da4e3c18ba22acbf46ad974cb66736c962220fcb76b7862d623ab59c138559d2"},"schema_version":"1.0"},"canonical_sha256":"2ea4e7c7f68d0eacfef2de5ba175603c90b9ad7e8d36018d626192b883862625","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:21:52.219837Z","signature_b64":"pV7xd3cBF7RqdVivNbWGB4agsElUG+Qfv8lskNoT0/+iCoWeFmfidLQIk3qlpDwLfP81zxMKyYaaApXBECoHAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2ea4e7c7f68d0eacfef2de5ba175603c90b9ad7e8d36018d626192b883862625","last_reissued_at":"2026-05-18T01:21:52.219149Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:21:52.219149Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.05951","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":"2026-05-18T01:21:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t3/092kO2FMsWg/yv84cjOttzGYpXO/48X6TTfNhizFQYCpGxxjDDVAm9fqPR6jhb8Tpm/Q8tWr4oFeQZae9Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T06:38:39.145156Z"},"content_sha256":"a3e28967eda8e5781f3e79bd242652981dff88353328d23b230e08d4f5731133","schema_version":"1.0","event_id":"sha256:a3e28967eda8e5781f3e79bd242652981dff88353328d23b230e08d4f5731133"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:F2SOPR7WRUHKZ7XS3ZN2C5LAHS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A multiwavelength view of the galaxy cluster Abell 523 and its peculiar diffuse radio source","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"F. Gastaldello, F. Govoni, G. Giovannini, M. Girardi, M. Murgia, M. Trasatti, R. Barrena, S. Ettori, V. Vacca, W. Boschin","submitted_at":"2015-10-20T16:31:21Z","abstract_excerpt":"We study the structure of the galaxy cluster Abell 523 (A523) at z=0.104 using new spectroscopic data for 132 galaxies acquired at the Telescopio Nazionale Galileo, new photometric data from the Isaac Newton Telescope, and X-ray and radio data from the Chandra and Very Large Array archives. We estimate the velocity dispersion of the galaxy population, sigmaV=949 km/s, and the X-ray temperature of the hot intracluster medium, kT=5.3 keV. We infer that A523 is a massive system: M200 about 7-9 x10E14 Msun. The analysis of the optical data confirms the presence of two subclusters, 0.75 Mpc apart, "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.05951","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":"2026-05-18T01:21:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ANDCpD5Y9CQ4j8rKQfpDN9XRt6Wvo+3xznZY8bbAHK1vS1KRuVVKi9cbQ5HWkis9vwoAtBiPSqxFocLC9D6bBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T06:38:39.145579Z"},"content_sha256":"47cfe14fd006fdfca5a869038b366404265929e98723d6c2bfee4c6f5414c0a2","schema_version":"1.0","event_id":"sha256:47cfe14fd006fdfca5a869038b366404265929e98723d6c2bfee4c6f5414c0a2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/F2SOPR7WRUHKZ7XS3ZN2C5LAHS/bundle.json","state_url":"https://pith.science/pith/F2SOPR7WRUHKZ7XS3ZN2C5LAHS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/F2SOPR7WRUHKZ7XS3ZN2C5LAHS/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":"2026-05-25T06:38:39Z","links":{"resolver":"https://pith.science/pith/F2SOPR7WRUHKZ7XS3ZN2C5LAHS","bundle":"https://pith.science/pith/F2SOPR7WRUHKZ7XS3ZN2C5LAHS/bundle.json","state":"https://pith.science/pith/F2SOPR7WRUHKZ7XS3ZN2C5LAHS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/F2SOPR7WRUHKZ7XS3ZN2C5LAHS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:F2SOPR7WRUHKZ7XS3ZN2C5LAHS","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":"da4e3c18ba22acbf46ad974cb66736c962220fcb76b7862d623ab59c138559d2","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-10-20T16:31:21Z","title_canon_sha256":"61d608e017f0007d79a5ba75a19ac88fdc5bd8282f9d22fd0c74ce28396e43f6"},"schema_version":"1.0","source":{"id":"1510.05951","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.05951","created_at":"2026-05-18T01:21:52Z"},{"alias_kind":"arxiv_version","alias_value":"1510.05951v2","created_at":"2026-05-18T01:21:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.05951","created_at":"2026-05-18T01:21:52Z"},{"alias_kind":"pith_short_12","alias_value":"F2SOPR7WRUHK","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"F2SOPR7WRUHKZ7XS","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"F2SOPR7W","created_at":"2026-05-18T12:29:19Z"}],"graph_snapshots":[{"event_id":"sha256:47cfe14fd006fdfca5a869038b366404265929e98723d6c2bfee4c6f5414c0a2","target":"graph","created_at":"2026-05-18T01:21:52Z","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 study the structure of the galaxy cluster Abell 523 (A523) at z=0.104 using new spectroscopic data for 132 galaxies acquired at the Telescopio Nazionale Galileo, new photometric data from the Isaac Newton Telescope, and X-ray and radio data from the Chandra and Very Large Array archives. We estimate the velocity dispersion of the galaxy population, sigmaV=949 km/s, and the X-ray temperature of the hot intracluster medium, kT=5.3 keV. We infer that A523 is a massive system: M200 about 7-9 x10E14 Msun. The analysis of the optical data confirms the presence of two subclusters, 0.75 Mpc apart, ","authors_text":"F. Gastaldello, F. Govoni, G. Giovannini, M. Girardi, M. Murgia, M. Trasatti, R. Barrena, S. Ettori, V. Vacca, W. Boschin","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-10-20T16:31:21Z","title":"A multiwavelength view of the galaxy cluster Abell 523 and its peculiar diffuse radio source"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.05951","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:a3e28967eda8e5781f3e79bd242652981dff88353328d23b230e08d4f5731133","target":"record","created_at":"2026-05-18T01:21:52Z","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":"da4e3c18ba22acbf46ad974cb66736c962220fcb76b7862d623ab59c138559d2","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-10-20T16:31:21Z","title_canon_sha256":"61d608e017f0007d79a5ba75a19ac88fdc5bd8282f9d22fd0c74ce28396e43f6"},"schema_version":"1.0","source":{"id":"1510.05951","kind":"arxiv","version":2}},"canonical_sha256":"2ea4e7c7f68d0eacfef2de5ba175603c90b9ad7e8d36018d626192b883862625","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2ea4e7c7f68d0eacfef2de5ba175603c90b9ad7e8d36018d626192b883862625","first_computed_at":"2026-05-18T01:21:52.219149Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:21:52.219149Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pV7xd3cBF7RqdVivNbWGB4agsElUG+Qfv8lskNoT0/+iCoWeFmfidLQIk3qlpDwLfP81zxMKyYaaApXBECoHAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:21:52.219837Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.05951","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a3e28967eda8e5781f3e79bd242652981dff88353328d23b230e08d4f5731133","sha256:47cfe14fd006fdfca5a869038b366404265929e98723d6c2bfee4c6f5414c0a2"],"state_sha256":"e7783c533b46676284184ed4d3b73993bab609b776aeb040ec088dbba859cc04"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Zr9b83GhAPLkT1oW85Ff+Yi/2yZx7/6M1K0jMWQbgYzIxL0KaNiOIBaexbTn7t1xqO4Ipk1sfad9OHFJMn7NBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T06:38:39.148877Z","bundle_sha256":"2f8dc82e08a9ea7cea689ed56bdec01c231aa6a82239a084413b23a5cb6287a7"}}