{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:RBZ3572PH5AITOESQZYT4X3Z2X","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":"ff08993a493f75fffa6a42b15703c9b8791800b32aefdb055398df2c1dc2d3be","cross_cats_sorted":["astro-ph.GA","gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-11-12T16:24:59Z","title_canon_sha256":"c93b38cca58b75ba6335523e5e65e666a027ab296c5818f1f60220ca0a250dd0"},"schema_version":"1.0","source":{"id":"1911.04988","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1911.04988","created_at":"2026-07-05T01:24:28Z"},{"alias_kind":"arxiv_version","alias_value":"1911.04988v1","created_at":"2026-07-05T01:24:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1911.04988","created_at":"2026-07-05T01:24:28Z"},{"alias_kind":"pith_short_12","alias_value":"RBZ3572PH5AI","created_at":"2026-07-05T01:24:28Z"},{"alias_kind":"pith_short_16","alias_value":"RBZ3572PH5AITOES","created_at":"2026-07-05T01:24:28Z"},{"alias_kind":"pith_short_8","alias_value":"RBZ3572P","created_at":"2026-07-05T01:24:28Z"}],"graph_snapshots":[{"event_id":"sha256:1cb62600807cc15b4216bc0e2afb1f027b125159b1fe3a93411bf20b137e62bf","target":"graph","created_at":"2026-07-05T01:24:28Z","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/1911.04988/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We explore the possibility that matter bulk flows could generate the required vorticity in the electron-proton-photon plasma to source cosmic magnetic fields through the Harrison mechanism. We analyze the coupled set of perturbed Maxwell and Boltzmann equations for a plasma in which the matter and radiation components exhibit relative bulk motions at the background level. We find that, to first order in cosmological perturbations, bulk flows with velocities compatible with current Planck limits ($\\beta<8.5\\times 10^{-4}$ at $95\\%$ CL) could generate magnetic fields with an amplitude $10^{-21}$","authors_text":"A. L. Maroto, H. Villarrubia-Rojo, J. A. R. Cembranos","cross_cats":["astro-ph.GA","gr-qc","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-11-12T16:24:59Z","title":"Magnetic fields from cosmological bulk flows"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1911.04988","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":"sha256:0dd169ef6ac869ad0fbe08911987d4f9e404ed31db7341ac5d8ea3e4aca60d7a","target":"record","created_at":"2026-07-05T01:24:28Z","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":"ff08993a493f75fffa6a42b15703c9b8791800b32aefdb055398df2c1dc2d3be","cross_cats_sorted":["astro-ph.GA","gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-11-12T16:24:59Z","title_canon_sha256":"c93b38cca58b75ba6335523e5e65e666a027ab296c5818f1f60220ca0a250dd0"},"schema_version":"1.0","source":{"id":"1911.04988","kind":"arxiv","version":1}},"canonical_sha256":"8873beff4f3f4089b89286713e5f79d5e1eb083266af60d7ff0b3cadb5f8eb7f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8873beff4f3f4089b89286713e5f79d5e1eb083266af60d7ff0b3cadb5f8eb7f","first_computed_at":"2026-07-05T01:24:28.636485Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:24:28.636485Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pDHBmtm/MkBm5Soz8YMkPoD1LBnwX962o7U9XGDJa5XByCr4Cak0pfe646IlyybMDN3m80E7JOl8N5VswUBwAg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:24:28.636887Z","signed_message":"canonical_sha256_bytes"},"source_id":"1911.04988","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0dd169ef6ac869ad0fbe08911987d4f9e404ed31db7341ac5d8ea3e4aca60d7a","sha256:1cb62600807cc15b4216bc0e2afb1f027b125159b1fe3a93411bf20b137e62bf"],"state_sha256":"9f0c6c277d0f38a1984c3842a2a8c1e0b42abfcc623d8661d3457325ab7d78c8"}