{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:IPYLSO45MFYO65SNCUIF22P3D7","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":"2eedf02bbf72307f481c3498f7e8c1919dda532104682f7c9530ef9591258b42","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-05-18T21:33:57Z","title_canon_sha256":"b15ac438e6ecb2172b4402c0f59bcb8136744f0370abce5040c38e06ce17c70b"},"schema_version":"1.0","source":{"id":"2205.09221","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2205.09221","created_at":"2026-07-05T06:20:17Z"},{"alias_kind":"arxiv_version","alias_value":"2205.09221v1","created_at":"2026-07-05T06:20:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2205.09221","created_at":"2026-07-05T06:20:17Z"},{"alias_kind":"pith_short_12","alias_value":"IPYLSO45MFYO","created_at":"2026-07-05T06:20:17Z"},{"alias_kind":"pith_short_16","alias_value":"IPYLSO45MFYO65SN","created_at":"2026-07-05T06:20:17Z"},{"alias_kind":"pith_short_8","alias_value":"IPYLSO45","created_at":"2026-07-05T06:20:17Z"}],"graph_snapshots":[{"event_id":"sha256:cd30b897faaeff9578d17d1bbb203378f435a2c47d507c726efe02a8b8d3cd85","target":"graph","created_at":"2026-07-05T06:20:17Z","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/2205.09221/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Fast radio burst (FRB) source 20180916B exhibits a 16.33-day periodicity in its burst activity. It is as of yet unclear what proposed mechanism produces the activity, but polarization information is a key diagnostic. Here, we report on the polarization properties of 44 bursts from FRB 20180916B detected between 2018 December and 2021 December by CHIME/FRB, the FRB project on the Canadian Hydrogen Intensity Mapping Experiment the Canadian Hydrogen Intensity Mapping Experiment. In contrast to previous observations, we find significant variations in the Faraday rotation measure (RM) of FRB 201809","authors_text":"A. B. Pearlman, B. M. Gaensler, C. Leung, C. Ng, C. Patel, D. Michilli, D. Z. Li, E. Fonseca, E. Petroff, F. Adam Dong, I. H. Stairs, J. Su, K. Masui, K. R. Sand, K. Shin, K. Smith, M. Bhardwaj, M. Rafiei-Ravandi, M. Rahman, P. Chawla, P. Scholz, R. Mckinven, S. Tendulkar, T. Cassanelli, V. M. Kaspi, Z. Pleunis","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-05-18T21:33:57Z","title":"A Large Scale Magneto-ionic Fluctuation in the Local Environment of Periodic Fast Radio Burst Source, FRB 20180916B"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2205.09221","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:f38c02704cbb3dfccbec079e4c8e91ffb15069acdfc09212f38eba86e4c4d929","target":"record","created_at":"2026-07-05T06:20:17Z","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":"2eedf02bbf72307f481c3498f7e8c1919dda532104682f7c9530ef9591258b42","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-05-18T21:33:57Z","title_canon_sha256":"b15ac438e6ecb2172b4402c0f59bcb8136744f0370abce5040c38e06ce17c70b"},"schema_version":"1.0","source":{"id":"2205.09221","kind":"arxiv","version":1}},"canonical_sha256":"43f0b93b9d6170ef764d15105d69fb1fca209964850a6e90badfe5835af072b1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"43f0b93b9d6170ef764d15105d69fb1fca209964850a6e90badfe5835af072b1","first_computed_at":"2026-07-05T06:20:17.743055Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:20:17.743055Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SERlF4lqoZfp6BVOkTztZJw41MFMTveV1dm+I3kYtpKqvFxkJmbfo4Z3yWmNDZSDjrfSdOQsjkIg3Cw3ZomBDA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:20:17.743543Z","signed_message":"canonical_sha256_bytes"},"source_id":"2205.09221","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f38c02704cbb3dfccbec079e4c8e91ffb15069acdfc09212f38eba86e4c4d929","sha256:cd30b897faaeff9578d17d1bbb203378f435a2c47d507c726efe02a8b8d3cd85"],"state_sha256":"8cc3b81f6eda3400c11f94a63ec446728f5dea5983ea3b52d21806fba26469fd"}