{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:T3WW67O3EZTT2JET7RBPYYC42G","short_pith_number":"pith:T3WW67O3","canonical_record":{"source":{"id":"2108.00350","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-08-01T01:46:31Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"08566d001e0ad12bc18039852085151c6240779a3883c5a22f1b585c8d83003f","abstract_canon_sha256":"2ac7bdb685f50f2c10484933088170fd9c388ed90193d229d5e2be16ec791ed8"},"schema_version":"1.0"},"canonical_sha256":"9eed6f7ddb26673d2493fc42fc605cd19583b728c6b0bd9c3661285e1b56424e","source":{"kind":"arxiv","id":"2108.00350","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2108.00350","created_at":"2026-07-05T03:12:11Z"},{"alias_kind":"arxiv_version","alias_value":"2108.00350v1","created_at":"2026-07-05T03:12:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2108.00350","created_at":"2026-07-05T03:12:11Z"},{"alias_kind":"pith_short_12","alias_value":"T3WW67O3EZTT","created_at":"2026-07-05T03:12:11Z"},{"alias_kind":"pith_short_16","alias_value":"T3WW67O3EZTT2JET","created_at":"2026-07-05T03:12:11Z"},{"alias_kind":"pith_short_8","alias_value":"T3WW67O3","created_at":"2026-07-05T03:12:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:T3WW67O3EZTT2JET7RBPYYC42G","target":"record","payload":{"canonical_record":{"source":{"id":"2108.00350","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-08-01T01:46:31Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"08566d001e0ad12bc18039852085151c6240779a3883c5a22f1b585c8d83003f","abstract_canon_sha256":"2ac7bdb685f50f2c10484933088170fd9c388ed90193d229d5e2be16ec791ed8"},"schema_version":"1.0"},"canonical_sha256":"9eed6f7ddb26673d2493fc42fc605cd19583b728c6b0bd9c3661285e1b56424e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:12:11.496746Z","signature_b64":"PWTlM1XzPpLOYOXnv2MdLLTldrSygeEWz/7gFiFnPqyt9Xp1jvP8iHz0A6rQ5CKDMYWQux5rGn+bSjjmkbV7BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9eed6f7ddb26673d2493fc42fc605cd19583b728c6b0bd9c3661285e1b56424e","last_reissued_at":"2026-07-05T03:12:11.496307Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:12:11.496307Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2108.00350","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":"2026-07-05T03:12:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lwIg80CNMa6sr8hW29TvxcUdbDiYtW1CN9OA37JIqw3ePQ9k9ygKci8ixEl/KQEHTW1F9a+H46vlCEoB8XQVDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T15:23:11.009266Z"},"content_sha256":"71e6c2150e27a29c623f8ab03486bc4fe69cb2e59401bd806db3e0f66d7c3804","schema_version":"1.0","event_id":"sha256:71e6c2150e27a29c623f8ab03486bc4fe69cb2e59401bd806db3e0f66d7c3804"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:T3WW67O3EZTT2JET7RBPYYC42G","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Periodic Activities of Repeating Fast Radio Bursts from Be/X-ray Binary Systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"F. Y. Wang, Kun Xu, Qiao-Chu Li, Yong Shao, Yuan-Pei Yang, Ze-Nan Liu, Z. G. Dai","submitted_at":"2021-08-01T01:46:31Z","abstract_excerpt":"The frequency-dependent periodic active window of the fast radio burst FRB 180916.J0158+65 (FRB 180916B) was observed recently. In this Letter, we propose that a Be/X-ray binary (BeXRB) system, which is composed of a neutron star (NS) and a Be star with a circumstellar disk, might be the source of a repeating FRB with periodic activities, and apply this model to explain the activity window of FRB 180916B. The interaction between the NS magnetosphere and the accreted material results in evolution of the spin period and the centrifugal force of the NS, leading to the change of the stress in the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.00350","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2108.00350/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":"2026-07-05T03:12:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GAnxM76UO+DhhNl5G00Ou1k2aokr30YrdlpVLDrPPtFEqmddjeJDlkGbBt6Suj5Yl9diG9Bq4KATXeSUKstmDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T15:23:11.010309Z"},"content_sha256":"642c28b8576c14f6fa34c7eb225a9b4b667e690acad82c7bb71f382c1b3bd2c1","schema_version":"1.0","event_id":"sha256:642c28b8576c14f6fa34c7eb225a9b4b667e690acad82c7bb71f382c1b3bd2c1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/T3WW67O3EZTT2JET7RBPYYC42G/bundle.json","state_url":"https://pith.science/pith/T3WW67O3EZTT2JET7RBPYYC42G/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/T3WW67O3EZTT2JET7RBPYYC42G/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":"2026-08-15T15:23:11Z","links":{"resolver":"https://pith.science/pith/T3WW67O3EZTT2JET7RBPYYC42G","bundle":"https://pith.science/pith/T3WW67O3EZTT2JET7RBPYYC42G/bundle.json","state":"https://pith.science/pith/T3WW67O3EZTT2JET7RBPYYC42G/state.json","well_known_bundle":"https://pith.science/.well-known/pith/T3WW67O3EZTT2JET7RBPYYC42G/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:T3WW67O3EZTT2JET7RBPYYC42G","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":"2ac7bdb685f50f2c10484933088170fd9c388ed90193d229d5e2be16ec791ed8","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-08-01T01:46:31Z","title_canon_sha256":"08566d001e0ad12bc18039852085151c6240779a3883c5a22f1b585c8d83003f"},"schema_version":"1.0","source":{"id":"2108.00350","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2108.00350","created_at":"2026-07-05T03:12:11Z"},{"alias_kind":"arxiv_version","alias_value":"2108.00350v1","created_at":"2026-07-05T03:12:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2108.00350","created_at":"2026-07-05T03:12:11Z"},{"alias_kind":"pith_short_12","alias_value":"T3WW67O3EZTT","created_at":"2026-07-05T03:12:11Z"},{"alias_kind":"pith_short_16","alias_value":"T3WW67O3EZTT2JET","created_at":"2026-07-05T03:12:11Z"},{"alias_kind":"pith_short_8","alias_value":"T3WW67O3","created_at":"2026-07-05T03:12:11Z"}],"graph_snapshots":[{"event_id":"sha256:642c28b8576c14f6fa34c7eb225a9b4b667e690acad82c7bb71f382c1b3bd2c1","target":"graph","created_at":"2026-07-05T03:12:11Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2108.00350/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The frequency-dependent periodic active window of the fast radio burst FRB 180916.J0158+65 (FRB 180916B) was observed recently. In this Letter, we propose that a Be/X-ray binary (BeXRB) system, which is composed of a neutron star (NS) and a Be star with a circumstellar disk, might be the source of a repeating FRB with periodic activities, and apply this model to explain the activity window of FRB 180916B. The interaction between the NS magnetosphere and the accreted material results in evolution of the spin period and the centrifugal force of the NS, leading to the change of the stress in the ","authors_text":"F. Y. Wang, Kun Xu, Qiao-Chu Li, Yong Shao, Yuan-Pei Yang, Ze-Nan Liu, Z. G. Dai","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-08-01T01:46:31Z","title":"Periodic Activities of Repeating Fast Radio Bursts from Be/X-ray Binary Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.00350","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":"sha256:71e6c2150e27a29c623f8ab03486bc4fe69cb2e59401bd806db3e0f66d7c3804","target":"record","created_at":"2026-07-05T03:12:11Z","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":"2ac7bdb685f50f2c10484933088170fd9c388ed90193d229d5e2be16ec791ed8","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-08-01T01:46:31Z","title_canon_sha256":"08566d001e0ad12bc18039852085151c6240779a3883c5a22f1b585c8d83003f"},"schema_version":"1.0","source":{"id":"2108.00350","kind":"arxiv","version":1}},"canonical_sha256":"9eed6f7ddb26673d2493fc42fc605cd19583b728c6b0bd9c3661285e1b56424e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9eed6f7ddb26673d2493fc42fc605cd19583b728c6b0bd9c3661285e1b56424e","first_computed_at":"2026-07-05T03:12:11.496307Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:12:11.496307Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PWTlM1XzPpLOYOXnv2MdLLTldrSygeEWz/7gFiFnPqyt9Xp1jvP8iHz0A6rQ5CKDMYWQux5rGn+bSjjmkbV7BQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:12:11.496746Z","signed_message":"canonical_sha256_bytes"},"source_id":"2108.00350","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:71e6c2150e27a29c623f8ab03486bc4fe69cb2e59401bd806db3e0f66d7c3804","sha256:642c28b8576c14f6fa34c7eb225a9b4b667e690acad82c7bb71f382c1b3bd2c1"],"state_sha256":"416fe82ede88a17884dda5e61a1d893f7c8486502574b176396d8257293bb908"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eWPtabWOCSQ1CPtG3/1GJmfDwmIf8QWbcEXugK3oKlSHZBQI0FRtzteHA0ddjjFb9FPbjizLeyTOGQonYGKcCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T15:23:11.015691Z","bundle_sha256":"aa5d916fc1a7f04d4c0b5d263040376bad97a4e99f914aca52ee9c0dd5035d6f"}}