{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:SXNOY2GB2UVU3CS5GOITOH36LG","short_pith_number":"pith:SXNOY2GB","canonical_record":{"source":{"id":"2105.05868","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-05-12T18:00:06Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"8f04c2fe306848ff519ff86a2f58212e94b5c0cc7e2aaeddc7f78b18aed5936f","abstract_canon_sha256":"d1b750b853914b7fc9feef4d47df12e6b245df5a5fd2363310237b5d1e2cca90"},"schema_version":"1.0"},"canonical_sha256":"95daec68c1d52b4d8a5d3391371f7e599e67f76210a19f8168c8ae1799164abf","source":{"kind":"arxiv","id":"2105.05868","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.05868","created_at":"2026-07-05T02:43:24Z"},{"alias_kind":"arxiv_version","alias_value":"2105.05868v1","created_at":"2026-07-05T02:43:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.05868","created_at":"2026-07-05T02:43:24Z"},{"alias_kind":"pith_short_12","alias_value":"SXNOY2GB2UVU","created_at":"2026-07-05T02:43:24Z"},{"alias_kind":"pith_short_16","alias_value":"SXNOY2GB2UVU3CS5","created_at":"2026-07-05T02:43:24Z"},{"alias_kind":"pith_short_8","alias_value":"SXNOY2GB","created_at":"2026-07-05T02:43:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:SXNOY2GB2UVU3CS5GOITOH36LG","target":"record","payload":{"canonical_record":{"source":{"id":"2105.05868","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-05-12T18:00:06Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"8f04c2fe306848ff519ff86a2f58212e94b5c0cc7e2aaeddc7f78b18aed5936f","abstract_canon_sha256":"d1b750b853914b7fc9feef4d47df12e6b245df5a5fd2363310237b5d1e2cca90"},"schema_version":"1.0"},"canonical_sha256":"95daec68c1d52b4d8a5d3391371f7e599e67f76210a19f8168c8ae1799164abf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:43:24.119249Z","signature_b64":"s7q7lhw23BnYkROL1X8C5D+AF2OHBdVDms9RTY/b83mf9FItL7iuBz6n7QMBU68RlM5LU2F08ns9wKgEAHOBBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"95daec68c1d52b4d8a5d3391371f7e599e67f76210a19f8168c8ae1799164abf","last_reissued_at":"2026-07-05T02:43:24.118770Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:43:24.118770Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2105.05868","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":"2026-07-05T02:43:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fImZt8pOk2AJa7CB0DjO6Dt78uOZgL6susgz/OXob+IGeDT2o6Ot+eX24Kd6fvLqdE/w94cUm00G4dpT56LABQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T13:17:13.122675Z"},"content_sha256":"1d43006cd02f106396d378b52cd1ee8821bd4c9466b91b20c1771620d6ac70f0","schema_version":"1.0","event_id":"sha256:1d43006cd02f106396d378b52cd1ee8821bd4c9466b91b20c1771620d6ac70f0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:SXNOY2GB2UVU3CS5GOITOH36LG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"FRBs Lensed by Point Masses I. Lens Mass Estimation for Doubly Imaged FRBs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Guoliang Li, Wenwen Zheng, Xuechun Chen, Yiping Shu","submitted_at":"2021-05-12T18:00:06Z","abstract_excerpt":"Fast radio bursts (FRBs) are bright radio transient events with durations on the order of milliseconds. The majority of FRB sources discovered so far have a single peak, with the exception of a few showing multiple-peaked profiles, the origin of which is unknown. In this work, we show that the strong lensing effect of a point mass or a point mass $+$ external shear on a single-peak FRB can produce double peaks (i.e. lensed images). In particular, the leading peak will always be more magnified and hence brighter than the trailing peak for a point-mass lens model, while the point-mass $+$ extern"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.05868","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/2105.05868/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":"2026-07-05T02:43:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KjPaO9liuzCicLEISPIl2gvwYsxyi6N5G5qL+z17FmRnkhj0afFg2gVJVLrjyOfJ4z9Tea11QyoghGQVLnMqAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T13:17:13.124237Z"},"content_sha256":"9cc60e4cc29d6a5835edd19809407f560ff9a036e4d3945f4f9c8ca06898e105","schema_version":"1.0","event_id":"sha256:9cc60e4cc29d6a5835edd19809407f560ff9a036e4d3945f4f9c8ca06898e105"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SXNOY2GB2UVU3CS5GOITOH36LG/bundle.json","state_url":"https://pith.science/pith/SXNOY2GB2UVU3CS5GOITOH36LG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SXNOY2GB2UVU3CS5GOITOH36LG/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":"2026-08-13T13:17:13Z","links":{"resolver":"https://pith.science/pith/SXNOY2GB2UVU3CS5GOITOH36LG","bundle":"https://pith.science/pith/SXNOY2GB2UVU3CS5GOITOH36LG/bundle.json","state":"https://pith.science/pith/SXNOY2GB2UVU3CS5GOITOH36LG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SXNOY2GB2UVU3CS5GOITOH36LG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:SXNOY2GB2UVU3CS5GOITOH36LG","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":"d1b750b853914b7fc9feef4d47df12e6b245df5a5fd2363310237b5d1e2cca90","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-05-12T18:00:06Z","title_canon_sha256":"8f04c2fe306848ff519ff86a2f58212e94b5c0cc7e2aaeddc7f78b18aed5936f"},"schema_version":"1.0","source":{"id":"2105.05868","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.05868","created_at":"2026-07-05T02:43:24Z"},{"alias_kind":"arxiv_version","alias_value":"2105.05868v1","created_at":"2026-07-05T02:43:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.05868","created_at":"2026-07-05T02:43:24Z"},{"alias_kind":"pith_short_12","alias_value":"SXNOY2GB2UVU","created_at":"2026-07-05T02:43:24Z"},{"alias_kind":"pith_short_16","alias_value":"SXNOY2GB2UVU3CS5","created_at":"2026-07-05T02:43:24Z"},{"alias_kind":"pith_short_8","alias_value":"SXNOY2GB","created_at":"2026-07-05T02:43:24Z"}],"graph_snapshots":[{"event_id":"sha256:9cc60e4cc29d6a5835edd19809407f560ff9a036e4d3945f4f9c8ca06898e105","target":"graph","created_at":"2026-07-05T02:43:24Z","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/2105.05868/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Fast radio bursts (FRBs) are bright radio transient events with durations on the order of milliseconds. The majority of FRB sources discovered so far have a single peak, with the exception of a few showing multiple-peaked profiles, the origin of which is unknown. In this work, we show that the strong lensing effect of a point mass or a point mass $+$ external shear on a single-peak FRB can produce double peaks (i.e. lensed images). In particular, the leading peak will always be more magnified and hence brighter than the trailing peak for a point-mass lens model, while the point-mass $+$ extern","authors_text":"Guoliang Li, Wenwen Zheng, Xuechun Chen, Yiping Shu","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-05-12T18:00:06Z","title":"FRBs Lensed by Point Masses I. Lens Mass Estimation for Doubly Imaged FRBs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.05868","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":"sha256:1d43006cd02f106396d378b52cd1ee8821bd4c9466b91b20c1771620d6ac70f0","target":"record","created_at":"2026-07-05T02:43:24Z","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":"d1b750b853914b7fc9feef4d47df12e6b245df5a5fd2363310237b5d1e2cca90","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-05-12T18:00:06Z","title_canon_sha256":"8f04c2fe306848ff519ff86a2f58212e94b5c0cc7e2aaeddc7f78b18aed5936f"},"schema_version":"1.0","source":{"id":"2105.05868","kind":"arxiv","version":1}},"canonical_sha256":"95daec68c1d52b4d8a5d3391371f7e599e67f76210a19f8168c8ae1799164abf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"95daec68c1d52b4d8a5d3391371f7e599e67f76210a19f8168c8ae1799164abf","first_computed_at":"2026-07-05T02:43:24.118770Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:43:24.118770Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"s7q7lhw23BnYkROL1X8C5D+AF2OHBdVDms9RTY/b83mf9FItL7iuBz6n7QMBU68RlM5LU2F08ns9wKgEAHOBBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:43:24.119249Z","signed_message":"canonical_sha256_bytes"},"source_id":"2105.05868","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1d43006cd02f106396d378b52cd1ee8821bd4c9466b91b20c1771620d6ac70f0","sha256:9cc60e4cc29d6a5835edd19809407f560ff9a036e4d3945f4f9c8ca06898e105"],"state_sha256":"b554a640945d67222c62a1c9fba90b0d67744d84aa6761618b9253bb9bfa5913"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ubZZRM5cyKJeUH4LbJ5KSrr7JMz/nqZY16bTE9C7kkqcrISS9qQM14/ZuYqKueQunNHqrJFtAsAdupt082zCDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T13:17:13.136361Z","bundle_sha256":"f67b9fa20b9fa801cc75302ba80352a5c3082612248e9deeed78892baa8e5d34"}}