{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:RKTOUSH7RJWC5FSIUYYVJIZZVN","short_pith_number":"pith:RKTOUSH7","canonical_record":{"source":{"id":"2003.12509","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-03-27T16:18:56Z","cross_cats_sorted":[],"title_canon_sha256":"2434b286eacc337e282e548c30efa13fecede3b98326f3dd6172d5538ef1f0d7","abstract_canon_sha256":"5be3e60982408dd4bf3347d9e579f95c1a2aac6e7d0d88c9c65e70239ec4a592"},"schema_version":"1.0"},"canonical_sha256":"8aa6ea48ff8a6c2e9648a63154a339ab71564fa8fd8d91cac41c713fe9cee681","source":{"kind":"arxiv","id":"2003.12509","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.12509","created_at":"2026-07-05T01:14:44Z"},{"alias_kind":"arxiv_version","alias_value":"2003.12509v2","created_at":"2026-07-05T01:14:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.12509","created_at":"2026-07-05T01:14:44Z"},{"alias_kind":"pith_short_12","alias_value":"RKTOUSH7RJWC","created_at":"2026-07-05T01:14:44Z"},{"alias_kind":"pith_short_16","alias_value":"RKTOUSH7RJWC5FSI","created_at":"2026-07-05T01:14:44Z"},{"alias_kind":"pith_short_8","alias_value":"RKTOUSH7","created_at":"2026-07-05T01:14:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:RKTOUSH7RJWC5FSIUYYVJIZZVN","target":"record","payload":{"canonical_record":{"source":{"id":"2003.12509","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-03-27T16:18:56Z","cross_cats_sorted":[],"title_canon_sha256":"2434b286eacc337e282e548c30efa13fecede3b98326f3dd6172d5538ef1f0d7","abstract_canon_sha256":"5be3e60982408dd4bf3347d9e579f95c1a2aac6e7d0d88c9c65e70239ec4a592"},"schema_version":"1.0"},"canonical_sha256":"8aa6ea48ff8a6c2e9648a63154a339ab71564fa8fd8d91cac41c713fe9cee681","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:14:44.298568Z","signature_b64":"6GHehht6LCawb+7Jv4t80vVIAC4qram1jRN6R51motn+j0DC0mGYqVYUFvTOpsnTs/Lcz6N3KSkkdqbEoQPFDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8aa6ea48ff8a6c2e9648a63154a339ab71564fa8fd8d91cac41c713fe9cee681","last_reissued_at":"2026-07-05T01:14:44.298114Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:14:44.298114Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2003.12509","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:14:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SmgwzWlsyLm+d2YnoTwoiiYroDDUfGfeRyNTxISWI/Y/EpN+I2W+1INFp4gXGU/+DutRWQ/7csLGDTtpBzEIAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T13:48:01.659710Z"},"content_sha256":"1d0125b65a07f46fcb2bb4e5096e599a39fc609e2db5d7c6846ec190776322f6","schema_version":"1.0","event_id":"sha256:1d0125b65a07f46fcb2bb4e5096e599a39fc609e2db5d7c6846ec190776322f6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:RKTOUSH7RJWC5FSIUYYVJIZZVN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Periodicity in recurrent fast radio bursts and the origin of ultra long period magnetars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Brian D. Metzger, Paz Beniamini, Zorawar Wadiasingh","submitted_at":"2020-03-27T16:18:56Z","abstract_excerpt":"The recurrent fast radio burst FRB 180916 was recently shown to exhibit a 16 day period (with possible aliasing) in its bursting activity. Given magnetars as widely considered FRB sources, this period has been attributed to precession of the magnetar spin axis or the orbit of a binary companion. Here, we make the simpler connection to a {\\it rotational period}, an idea observationally motivated by the 6.7 hour period of the Galactic magnetar candidate, 1E 161348--5055. We explore three physical mechanisms that could lead to the creation of ultra long period magnetars: (i) enhanced spin-down du"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.12509","kind":"arxiv","version":2},"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/2003.12509/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":"2026-07-05T01:14:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"47gQpS0Jz4NTEgo6eB8VzYpb5Z9VRa8Vy5VIDhC65Rzgst9+EQHS5HDB6+P9HdAIhGsm60lJipChFe/R4qsABQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T13:48:01.660503Z"},"content_sha256":"17fc035c953e4b40a76d4735ff7f6766d9578276c9a17b28c41c78826f04de8b","schema_version":"1.0","event_id":"sha256:17fc035c953e4b40a76d4735ff7f6766d9578276c9a17b28c41c78826f04de8b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RKTOUSH7RJWC5FSIUYYVJIZZVN/bundle.json","state_url":"https://pith.science/pith/RKTOUSH7RJWC5FSIUYYVJIZZVN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RKTOUSH7RJWC5FSIUYYVJIZZVN/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":"2026-08-11T13:48:01Z","links":{"resolver":"https://pith.science/pith/RKTOUSH7RJWC5FSIUYYVJIZZVN","bundle":"https://pith.science/pith/RKTOUSH7RJWC5FSIUYYVJIZZVN/bundle.json","state":"https://pith.science/pith/RKTOUSH7RJWC5FSIUYYVJIZZVN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RKTOUSH7RJWC5FSIUYYVJIZZVN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:RKTOUSH7RJWC5FSIUYYVJIZZVN","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":"5be3e60982408dd4bf3347d9e579f95c1a2aac6e7d0d88c9c65e70239ec4a592","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-03-27T16:18:56Z","title_canon_sha256":"2434b286eacc337e282e548c30efa13fecede3b98326f3dd6172d5538ef1f0d7"},"schema_version":"1.0","source":{"id":"2003.12509","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.12509","created_at":"2026-07-05T01:14:44Z"},{"alias_kind":"arxiv_version","alias_value":"2003.12509v2","created_at":"2026-07-05T01:14:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.12509","created_at":"2026-07-05T01:14:44Z"},{"alias_kind":"pith_short_12","alias_value":"RKTOUSH7RJWC","created_at":"2026-07-05T01:14:44Z"},{"alias_kind":"pith_short_16","alias_value":"RKTOUSH7RJWC5FSI","created_at":"2026-07-05T01:14:44Z"},{"alias_kind":"pith_short_8","alias_value":"RKTOUSH7","created_at":"2026-07-05T01:14:44Z"}],"graph_snapshots":[{"event_id":"sha256:17fc035c953e4b40a76d4735ff7f6766d9578276c9a17b28c41c78826f04de8b","target":"graph","created_at":"2026-07-05T01:14:44Z","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/2003.12509/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The recurrent fast radio burst FRB 180916 was recently shown to exhibit a 16 day period (with possible aliasing) in its bursting activity. Given magnetars as widely considered FRB sources, this period has been attributed to precession of the magnetar spin axis or the orbit of a binary companion. Here, we make the simpler connection to a {\\it rotational period}, an idea observationally motivated by the 6.7 hour period of the Galactic magnetar candidate, 1E 161348--5055. We explore three physical mechanisms that could lead to the creation of ultra long period magnetars: (i) enhanced spin-down du","authors_text":"Brian D. Metzger, Paz Beniamini, Zorawar Wadiasingh","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-03-27T16:18:56Z","title":"Periodicity in recurrent fast radio bursts and the origin of ultra long period magnetars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.12509","kind":"arxiv","version":2},"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":"sha256:1d0125b65a07f46fcb2bb4e5096e599a39fc609e2db5d7c6846ec190776322f6","target":"record","created_at":"2026-07-05T01:14:44Z","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":"5be3e60982408dd4bf3347d9e579f95c1a2aac6e7d0d88c9c65e70239ec4a592","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-03-27T16:18:56Z","title_canon_sha256":"2434b286eacc337e282e548c30efa13fecede3b98326f3dd6172d5538ef1f0d7"},"schema_version":"1.0","source":{"id":"2003.12509","kind":"arxiv","version":2}},"canonical_sha256":"8aa6ea48ff8a6c2e9648a63154a339ab71564fa8fd8d91cac41c713fe9cee681","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8aa6ea48ff8a6c2e9648a63154a339ab71564fa8fd8d91cac41c713fe9cee681","first_computed_at":"2026-07-05T01:14:44.298114Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:14:44.298114Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6GHehht6LCawb+7Jv4t80vVIAC4qram1jRN6R51motn+j0DC0mGYqVYUFvTOpsnTs/Lcz6N3KSkkdqbEoQPFDw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:14:44.298568Z","signed_message":"canonical_sha256_bytes"},"source_id":"2003.12509","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1d0125b65a07f46fcb2bb4e5096e599a39fc609e2db5d7c6846ec190776322f6","sha256:17fc035c953e4b40a76d4735ff7f6766d9578276c9a17b28c41c78826f04de8b"],"state_sha256":"479a1f7b555dd47e64d37b229e9327ab0c93b87831bea4ec5f717f39bfe1cd80"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DNYFqiI9yg0xKXhJ9uxdUfrM0rtENQaROlnDB6bF0GsfvboRIe2f1D2LeNj+U3NsiMgTuefFJ4J6r8l/XzSeDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T13:48:01.667581Z","bundle_sha256":"5c1ec647e14e07d035d5997ab17412feb50c12547470e2fb2a649cf09a233355"}}