{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:GQBGXTWF7QYCTCJQOTKV7QNVDS","short_pith_number":"pith:GQBGXTWF","canonical_record":{"source":{"id":"0911.1029","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-11-05T13:44:54Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"5bbe56b784fb6c178a2818e05369934f0c6490b4d0c59c5b32b76d42153cb9dd","abstract_canon_sha256":"fcfa9d9b7cf98510b6db6ef8ee5e627b7e1892138b2b969223688a7f2680ae84"},"schema_version":"1.0"},"canonical_sha256":"34026bcec5fc3029893074d55fc1b51c86311000a8f1ac400a43fc0f0cb5c59f","source":{"kind":"arxiv","id":"0911.1029","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0911.1029","created_at":"2026-05-18T02:10:59Z"},{"alias_kind":"arxiv_version","alias_value":"0911.1029v1","created_at":"2026-05-18T02:10:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.1029","created_at":"2026-05-18T02:10:59Z"},{"alias_kind":"pith_short_12","alias_value":"GQBGXTWF7QYC","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"GQBGXTWF7QYCTCJQ","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"GQBGXTWF","created_at":"2026-05-18T12:25:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:GQBGXTWF7QYCTCJQOTKV7QNVDS","target":"record","payload":{"canonical_record":{"source":{"id":"0911.1029","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-11-05T13:44:54Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"5bbe56b784fb6c178a2818e05369934f0c6490b4d0c59c5b32b76d42153cb9dd","abstract_canon_sha256":"fcfa9d9b7cf98510b6db6ef8ee5e627b7e1892138b2b969223688a7f2680ae84"},"schema_version":"1.0"},"canonical_sha256":"34026bcec5fc3029893074d55fc1b51c86311000a8f1ac400a43fc0f0cb5c59f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:10:59.269127Z","signature_b64":"Nn9F0phgovInH2PxkF+R3hIQJTn1vITgxGrxvy3sZ/DZ8V3Kmni0PMdPKI2l/71cXyN0GkVn4gqneGa5Q/+LDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"34026bcec5fc3029893074d55fc1b51c86311000a8f1ac400a43fc0f0cb5c59f","last_reissued_at":"2026-05-18T02:10:59.268241Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:10:59.268241Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0911.1029","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":"2026-05-18T02:10:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R00P+PpBgSWQcr0n7YTKzTLsVj5CNS8PjsCZ3Jbu+RQlwup8//cfwBAEZUDWvgQzaOe8JdHuXqzJQomA5rlDDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T22:34:30.702987Z"},"content_sha256":"f7b7614e16cbb765550d23d4c41762eb1a1dc3e1c982768e81cad1ef2fe79f2d","schema_version":"1.0","event_id":"sha256:f7b7614e16cbb765550d23d4c41762eb1a1dc3e1c982768e81cad1ef2fe79f2d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:GQBGXTWF7QYCTCJQOTKV7QNVDS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cluster magnetic fields from active galactic nuclei","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"H.-Y. Yang, P.M. Ricker, P.M. Sutter","submitted_at":"2009-11-05T13:44:54Z","abstract_excerpt":"Active galactic nuclei (AGN) found at the centers of clusters of galaxies are a possible source for weak cluster-wide magnetic fields. To evaluate this scenario, we present 3D adaptive mesh refinement MHD simulations of a cool-core cluster that include injection of kinetic, thermal, and magnetic energy via an AGN-powered jet. Using the MHD solver in FLASH 2, we compare several sub-resolution approaches that link the estimated accretion rate as measured on the simulation mesh to the accretion rate onto the central black hole and the resulting feedback. We examine the effects of magnetized outfl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.1029","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":"2026-05-18T02:10:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+K2HcJUS5laK5hG4+kL2rJ7iDx8F6G0+7UW5UebCuntPrEGGF5eqsF5iFB/Bzotf/jfCezDF7k8AoOFedoIBDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T22:34:30.703780Z"},"content_sha256":"c131fc79bdd2c44113853a13b0a5a993e3283fb46dd66e8bb9d42c4a0815556d","schema_version":"1.0","event_id":"sha256:c131fc79bdd2c44113853a13b0a5a993e3283fb46dd66e8bb9d42c4a0815556d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GQBGXTWF7QYCTCJQOTKV7QNVDS/bundle.json","state_url":"https://pith.science/pith/GQBGXTWF7QYCTCJQOTKV7QNVDS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GQBGXTWF7QYCTCJQOTKV7QNVDS/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":"2026-06-10T22:34:30Z","links":{"resolver":"https://pith.science/pith/GQBGXTWF7QYCTCJQOTKV7QNVDS","bundle":"https://pith.science/pith/GQBGXTWF7QYCTCJQOTKV7QNVDS/bundle.json","state":"https://pith.science/pith/GQBGXTWF7QYCTCJQOTKV7QNVDS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GQBGXTWF7QYCTCJQOTKV7QNVDS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:GQBGXTWF7QYCTCJQOTKV7QNVDS","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":"fcfa9d9b7cf98510b6db6ef8ee5e627b7e1892138b2b969223688a7f2680ae84","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-11-05T13:44:54Z","title_canon_sha256":"5bbe56b784fb6c178a2818e05369934f0c6490b4d0c59c5b32b76d42153cb9dd"},"schema_version":"1.0","source":{"id":"0911.1029","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0911.1029","created_at":"2026-05-18T02:10:59Z"},{"alias_kind":"arxiv_version","alias_value":"0911.1029v1","created_at":"2026-05-18T02:10:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.1029","created_at":"2026-05-18T02:10:59Z"},{"alias_kind":"pith_short_12","alias_value":"GQBGXTWF7QYC","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"GQBGXTWF7QYCTCJQ","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"GQBGXTWF","created_at":"2026-05-18T12:25:59Z"}],"graph_snapshots":[{"event_id":"sha256:c131fc79bdd2c44113853a13b0a5a993e3283fb46dd66e8bb9d42c4a0815556d","target":"graph","created_at":"2026-05-18T02:10:59Z","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":"Active galactic nuclei (AGN) found at the centers of clusters of galaxies are a possible source for weak cluster-wide magnetic fields. To evaluate this scenario, we present 3D adaptive mesh refinement MHD simulations of a cool-core cluster that include injection of kinetic, thermal, and magnetic energy via an AGN-powered jet. Using the MHD solver in FLASH 2, we compare several sub-resolution approaches that link the estimated accretion rate as measured on the simulation mesh to the accretion rate onto the central black hole and the resulting feedback. We examine the effects of magnetized outfl","authors_text":"H.-Y. Yang, P.M. Ricker, P.M. Sutter","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-11-05T13:44:54Z","title":"Cluster magnetic fields from active galactic nuclei"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.1029","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:f7b7614e16cbb765550d23d4c41762eb1a1dc3e1c982768e81cad1ef2fe79f2d","target":"record","created_at":"2026-05-18T02:10:59Z","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":"fcfa9d9b7cf98510b6db6ef8ee5e627b7e1892138b2b969223688a7f2680ae84","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-11-05T13:44:54Z","title_canon_sha256":"5bbe56b784fb6c178a2818e05369934f0c6490b4d0c59c5b32b76d42153cb9dd"},"schema_version":"1.0","source":{"id":"0911.1029","kind":"arxiv","version":1}},"canonical_sha256":"34026bcec5fc3029893074d55fc1b51c86311000a8f1ac400a43fc0f0cb5c59f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"34026bcec5fc3029893074d55fc1b51c86311000a8f1ac400a43fc0f0cb5c59f","first_computed_at":"2026-05-18T02:10:59.268241Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:10:59.268241Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Nn9F0phgovInH2PxkF+R3hIQJTn1vITgxGrxvy3sZ/DZ8V3Kmni0PMdPKI2l/71cXyN0GkVn4gqneGa5Q/+LDw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:10:59.269127Z","signed_message":"canonical_sha256_bytes"},"source_id":"0911.1029","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f7b7614e16cbb765550d23d4c41762eb1a1dc3e1c982768e81cad1ef2fe79f2d","sha256:c131fc79bdd2c44113853a13b0a5a993e3283fb46dd66e8bb9d42c4a0815556d"],"state_sha256":"112a586b93e40842d5f7cf1af7eb583cca2e75e7e29ca13355c6351b3926bd9b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"imk+uTWxYDnUT0s3MO7Nei+wOaNYX+3qwemcoF9VPL0vsfSjZQdOsXpQSiFlyKfT9dwQS0nYwvx2l/4hhMCZCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T22:34:30.707574Z","bundle_sha256":"1053ea73da8f87d4bc133bebdb4874b7897ab89705fc8f35304e9f554c8146c3"}}