{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:XIL6OPBPPT7AB5XLJLENHP5CQW","short_pith_number":"pith:XIL6OPBP","canonical_record":{"source":{"id":"astro-ph/0406225","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-06-09T10:44:34Z","cross_cats_sorted":[],"title_canon_sha256":"f163a17189b3304d960962d3270b37b3fa97531f1debdb2b93f941c02384aad2","abstract_canon_sha256":"b41f824bac75835b8fb55e7b7948795321c227be28fe0b5220fae28d570fa15c"},"schema_version":"1.0"},"canonical_sha256":"ba17e73c2f7cfe00f6eb4ac8d3bfa28597f901672925ddf87badd8215dfdf8ff","source":{"kind":"arxiv","id":"astro-ph/0406225","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0406225","created_at":"2026-07-04T16:43:58Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0406225v1","created_at":"2026-07-04T16:43:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0406225","created_at":"2026-07-04T16:43:58Z"},{"alias_kind":"pith_short_12","alias_value":"XIL6OPBPPT7A","created_at":"2026-07-04T16:43:58Z"},{"alias_kind":"pith_short_16","alias_value":"XIL6OPBPPT7AB5XL","created_at":"2026-07-04T16:43:58Z"},{"alias_kind":"pith_short_8","alias_value":"XIL6OPBP","created_at":"2026-07-04T16:43:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:XIL6OPBPPT7AB5XLJLENHP5CQW","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0406225","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-06-09T10:44:34Z","cross_cats_sorted":[],"title_canon_sha256":"f163a17189b3304d960962d3270b37b3fa97531f1debdb2b93f941c02384aad2","abstract_canon_sha256":"b41f824bac75835b8fb55e7b7948795321c227be28fe0b5220fae28d570fa15c"},"schema_version":"1.0"},"canonical_sha256":"ba17e73c2f7cfe00f6eb4ac8d3bfa28597f901672925ddf87badd8215dfdf8ff","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:43:58.291486Z","signature_b64":"KqZrjt9VgtdvvPCIyTTrCVciK1DykjPtlQiPfBR8wDza3KynoSxfuTUQNRS839prpzM+E5Vwk3MsBKU6qyElBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ba17e73c2f7cfe00f6eb4ac8d3bfa28597f901672925ddf87badd8215dfdf8ff","last_reissued_at":"2026-07-04T16:43:58.290961Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:43:58.290961Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0406225","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":"2026-07-04T16:43:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LL6dHSKKNkTE0zy8hZ3JRZddRT6FuauAwlEXke2cXYNjXEtJZUZKKiVQeI6rlU0gifNJS44zm46sBgc1PAfYCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T11:49:14.975542Z"},"content_sha256":"99df55b4dbcad811c2bc331859011d2eb7dd999317ce494697027047096baacc","schema_version":"1.0","event_id":"sha256:99df55b4dbcad811c2bc331859011d2eb7dd999317ce494697027047096baacc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:XIL6OPBPPT7AB5XLJLENHP5CQW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Magnetic Fields and Faraday Rotation in Clusters of Galaxies","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"D. Dallacasa, F. Govoni, G.B. Taylor, G. Giovannini, K. Dolag, L. Feretti, M. Murgia, R. Fanti","submitted_at":"2004-06-09T10:44:34Z","abstract_excerpt":"We present a numerical approach to investigate the relationship between magnetic fields and Faraday rotation effects in clusters of galaxies. We can infer the structure and strength of intra-cluster magnetic fields by comparing our simulations with the observed polarization properties of extended cluster radio sources such as radio galaxies and halos. We find the observations require a magnetic field which fluctuates over a wide range of spatial scales (at least one order of magnitude). If several polarized radio sources are located at different projected positions in a galaxy cluster, as is t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0406225","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/0406225/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":"2026-07-04T16:43:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7Q/cFoXxnGDesI2LbIGPp6hNYSudGL0jCnu5/dTzSHeml3lTqSSWXX8vuJ6BITQmXqbNtWjSFhAXRnxsF+vRAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T11:49:14.976043Z"},"content_sha256":"3629376de497708c8615a257de9476fea415f315c231a21dd195cfcf20cc7450","schema_version":"1.0","event_id":"sha256:3629376de497708c8615a257de9476fea415f315c231a21dd195cfcf20cc7450"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XIL6OPBPPT7AB5XLJLENHP5CQW/bundle.json","state_url":"https://pith.science/pith/XIL6OPBPPT7AB5XLJLENHP5CQW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XIL6OPBPPT7AB5XLJLENHP5CQW/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":"2026-08-06T11:49:14Z","links":{"resolver":"https://pith.science/pith/XIL6OPBPPT7AB5XLJLENHP5CQW","bundle":"https://pith.science/pith/XIL6OPBPPT7AB5XLJLENHP5CQW/bundle.json","state":"https://pith.science/pith/XIL6OPBPPT7AB5XLJLENHP5CQW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XIL6OPBPPT7AB5XLJLENHP5CQW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:XIL6OPBPPT7AB5XLJLENHP5CQW","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":"b41f824bac75835b8fb55e7b7948795321c227be28fe0b5220fae28d570fa15c","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-06-09T10:44:34Z","title_canon_sha256":"f163a17189b3304d960962d3270b37b3fa97531f1debdb2b93f941c02384aad2"},"schema_version":"1.0","source":{"id":"astro-ph/0406225","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0406225","created_at":"2026-07-04T16:43:58Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0406225v1","created_at":"2026-07-04T16:43:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0406225","created_at":"2026-07-04T16:43:58Z"},{"alias_kind":"pith_short_12","alias_value":"XIL6OPBPPT7A","created_at":"2026-07-04T16:43:58Z"},{"alias_kind":"pith_short_16","alias_value":"XIL6OPBPPT7AB5XL","created_at":"2026-07-04T16:43:58Z"},{"alias_kind":"pith_short_8","alias_value":"XIL6OPBP","created_at":"2026-07-04T16:43:58Z"}],"graph_snapshots":[{"event_id":"sha256:3629376de497708c8615a257de9476fea415f315c231a21dd195cfcf20cc7450","target":"graph","created_at":"2026-07-04T16:43:58Z","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/0406225/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a numerical approach to investigate the relationship between magnetic fields and Faraday rotation effects in clusters of galaxies. We can infer the structure and strength of intra-cluster magnetic fields by comparing our simulations with the observed polarization properties of extended cluster radio sources such as radio galaxies and halos. We find the observations require a magnetic field which fluctuates over a wide range of spatial scales (at least one order of magnitude). If several polarized radio sources are located at different projected positions in a galaxy cluster, as is t","authors_text":"D. Dallacasa, F. Govoni, G.B. Taylor, G. Giovannini, K. Dolag, L. Feretti, M. Murgia, R. Fanti","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-06-09T10:44:34Z","title":"Magnetic Fields and Faraday Rotation in Clusters of Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0406225","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":"sha256:99df55b4dbcad811c2bc331859011d2eb7dd999317ce494697027047096baacc","target":"record","created_at":"2026-07-04T16:43:58Z","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":"b41f824bac75835b8fb55e7b7948795321c227be28fe0b5220fae28d570fa15c","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-06-09T10:44:34Z","title_canon_sha256":"f163a17189b3304d960962d3270b37b3fa97531f1debdb2b93f941c02384aad2"},"schema_version":"1.0","source":{"id":"astro-ph/0406225","kind":"arxiv","version":1}},"canonical_sha256":"ba17e73c2f7cfe00f6eb4ac8d3bfa28597f901672925ddf87badd8215dfdf8ff","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ba17e73c2f7cfe00f6eb4ac8d3bfa28597f901672925ddf87badd8215dfdf8ff","first_computed_at":"2026-07-04T16:43:58.290961Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:43:58.290961Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KqZrjt9VgtdvvPCIyTTrCVciK1DykjPtlQiPfBR8wDza3KynoSxfuTUQNRS839prpzM+E5Vwk3MsBKU6qyElBQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:43:58.291486Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0406225","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:99df55b4dbcad811c2bc331859011d2eb7dd999317ce494697027047096baacc","sha256:3629376de497708c8615a257de9476fea415f315c231a21dd195cfcf20cc7450"],"state_sha256":"a79203e6032c7c60904633ae81375c7d4f90590557ef57dba16c53a32ad9b18d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lB8YdfFUKM2wD8U63xHvkCAAY3mDJ6bNyju/jD4w2+qeKAFxpwPjkLz2448YnMACFi3i5s/mQmZXvRc/Gg5rAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T11:49:14.979757Z","bundle_sha256":"301714caace73fd87b2d46cede8b12ada29c10b6fce5b72a95be9485a368f0d5"}}