{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:KSDTIFI6652TTYDS7URYWE5BHE","short_pith_number":"pith:KSDTIFI6","canonical_record":{"source":{"id":"1211.3337","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-11-14T15:47:06Z","cross_cats_sorted":[],"title_canon_sha256":"878fdc9a30cf6c6b6eb87376be30d091f9023d543132bddadbff254752762899","abstract_canon_sha256":"6a42c803bc6073fdc3fcad15d12d1c74421d7f59919fd6af396b9346461d192c"},"schema_version":"1.0"},"canonical_sha256":"548734151ef77539e072fd238b13a1392e80e7cc647ba9a142162239263b761f","source":{"kind":"arxiv","id":"1211.3337","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.3337","created_at":"2026-05-18T01:53:11Z"},{"alias_kind":"arxiv_version","alias_value":"1211.3337v1","created_at":"2026-05-18T01:53:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.3337","created_at":"2026-05-18T01:53:11Z"},{"alias_kind":"pith_short_12","alias_value":"KSDTIFI6652T","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"KSDTIFI6652TTYDS","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"KSDTIFI6","created_at":"2026-05-18T12:27:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:KSDTIFI6652TTYDS7URYWE5BHE","target":"record","payload":{"canonical_record":{"source":{"id":"1211.3337","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-11-14T15:47:06Z","cross_cats_sorted":[],"title_canon_sha256":"878fdc9a30cf6c6b6eb87376be30d091f9023d543132bddadbff254752762899","abstract_canon_sha256":"6a42c803bc6073fdc3fcad15d12d1c74421d7f59919fd6af396b9346461d192c"},"schema_version":"1.0"},"canonical_sha256":"548734151ef77539e072fd238b13a1392e80e7cc647ba9a142162239263b761f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:53:11.339205Z","signature_b64":"/+fNJEF8mu34etDPcN0eCPDfFVYtkcV1iV+dY1IXhVnNiZQGafvb3Sk3n4wLEEwjS4J+zjpmlKPNufv48nkiDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"548734151ef77539e072fd238b13a1392e80e7cc647ba9a142162239263b761f","last_reissued_at":"2026-05-18T01:53:11.338561Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:53:11.338561Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1211.3337","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":"2026-05-18T01:53:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PL8VWC2bQRMdEj+GaE7bp9plSHZaMde6CQxBDQGhytHsk5DLXa3A7PKuuaNcBgxTb/sxkX15HPwv8Ptt0TgoAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-27T00:48:54.153843Z"},"content_sha256":"df1f8776ed273850c7e703c3c15e73dcef8a19e0cbd4d8e8708383b21abde28f","schema_version":"1.0","event_id":"sha256:df1f8776ed273850c7e703c3c15e73dcef8a19e0cbd4d8e8708383b21abde28f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:KSDTIFI6652TTYDS7URYWE5BHE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Rise and Fall of Radio Halos in Simulated Merging Galaxy Clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Gianfranco Brunetti, Julius Donnert, Klaus Dolag, Rossella Cassano","submitted_at":"2012-11-14T15:47:06Z","abstract_excerpt":"We present the first high resolution MHD simulation of cosmic-ray electron reacceleration by turbulence in cluster mergers. We use an idealised model for cluster mergers, combined with a numerical model for the injection, cooling and reacceleration of cosmic-ray electrons, to investigate the evolution of cluster scale radio emission in these objects. In line with theoretical expectations, we for the first time, show in a simulation that reacceleration of CRe has the potential to reproduce key observables of radio halos. In particular, we show that clusters evolve being radio loud or radio quie"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.3337","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":"2026-05-18T01:53:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HyR0LyROtubeHi1DKZqqw4v5md5T/i17beH4sIPG7dko/V+en66TGZ9SkdCFAeVBPsXJZ9sLhlWfOb7FhioQCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-27T00:48:54.154184Z"},"content_sha256":"b17e7d0761f552b124151005264b4b1ec4784bf1a7a678e08e196ed9fdb0f447","schema_version":"1.0","event_id":"sha256:b17e7d0761f552b124151005264b4b1ec4784bf1a7a678e08e196ed9fdb0f447"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KSDTIFI6652TTYDS7URYWE5BHE/bundle.json","state_url":"https://pith.science/pith/KSDTIFI6652TTYDS7URYWE5BHE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KSDTIFI6652TTYDS7URYWE5BHE/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":"2026-07-27T00:48:54Z","links":{"resolver":"https://pith.science/pith/KSDTIFI6652TTYDS7URYWE5BHE","bundle":"https://pith.science/pith/KSDTIFI6652TTYDS7URYWE5BHE/bundle.json","state":"https://pith.science/pith/KSDTIFI6652TTYDS7URYWE5BHE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KSDTIFI6652TTYDS7URYWE5BHE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:KSDTIFI6652TTYDS7URYWE5BHE","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":"6a42c803bc6073fdc3fcad15d12d1c74421d7f59919fd6af396b9346461d192c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-11-14T15:47:06Z","title_canon_sha256":"878fdc9a30cf6c6b6eb87376be30d091f9023d543132bddadbff254752762899"},"schema_version":"1.0","source":{"id":"1211.3337","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.3337","created_at":"2026-05-18T01:53:11Z"},{"alias_kind":"arxiv_version","alias_value":"1211.3337v1","created_at":"2026-05-18T01:53:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.3337","created_at":"2026-05-18T01:53:11Z"},{"alias_kind":"pith_short_12","alias_value":"KSDTIFI6652T","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"KSDTIFI6652TTYDS","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"KSDTIFI6","created_at":"2026-05-18T12:27:11Z"}],"graph_snapshots":[{"event_id":"sha256:b17e7d0761f552b124151005264b4b1ec4784bf1a7a678e08e196ed9fdb0f447","target":"graph","created_at":"2026-05-18T01:53:11Z","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 first high resolution MHD simulation of cosmic-ray electron reacceleration by turbulence in cluster mergers. We use an idealised model for cluster mergers, combined with a numerical model for the injection, cooling and reacceleration of cosmic-ray electrons, to investigate the evolution of cluster scale radio emission in these objects. In line with theoretical expectations, we for the first time, show in a simulation that reacceleration of CRe has the potential to reproduce key observables of radio halos. In particular, we show that clusters evolve being radio loud or radio quie","authors_text":"Gianfranco Brunetti, Julius Donnert, Klaus Dolag, Rossella Cassano","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-11-14T15:47:06Z","title":"Rise and Fall of Radio Halos in Simulated Merging Galaxy Clusters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.3337","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:df1f8776ed273850c7e703c3c15e73dcef8a19e0cbd4d8e8708383b21abde28f","target":"record","created_at":"2026-05-18T01:53:11Z","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":"6a42c803bc6073fdc3fcad15d12d1c74421d7f59919fd6af396b9346461d192c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-11-14T15:47:06Z","title_canon_sha256":"878fdc9a30cf6c6b6eb87376be30d091f9023d543132bddadbff254752762899"},"schema_version":"1.0","source":{"id":"1211.3337","kind":"arxiv","version":1}},"canonical_sha256":"548734151ef77539e072fd238b13a1392e80e7cc647ba9a142162239263b761f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"548734151ef77539e072fd238b13a1392e80e7cc647ba9a142162239263b761f","first_computed_at":"2026-05-18T01:53:11.338561Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:53:11.338561Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/+fNJEF8mu34etDPcN0eCPDfFVYtkcV1iV+dY1IXhVnNiZQGafvb3Sk3n4wLEEwjS4J+zjpmlKPNufv48nkiDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:53:11.339205Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.3337","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:df1f8776ed273850c7e703c3c15e73dcef8a19e0cbd4d8e8708383b21abde28f","sha256:b17e7d0761f552b124151005264b4b1ec4784bf1a7a678e08e196ed9fdb0f447"],"state_sha256":"4c611be66cc91a8955d2f076bece5857d1022db89b233916269cf7ca8b7ccee4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6DbsFUV5qaGylu54E0XyUhBlaT+oXws4trYbOX52tD0D/Zsqkwt0666E6O9LZOnyRB+HghI1XJ2EFcOehdfTDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-27T00:48:54.156726Z","bundle_sha256":"81fc3ea9b53f983658a69d7347d64fff8c88856582e32faad0b5e6c8c9608c1b"}}