{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:RA72DBSXQ5YHHGBW7WJ4LZCSCC","short_pith_number":"pith:RA72DBSX","canonical_record":{"source":{"id":"1802.00292","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-02-01T14:06:06Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"48d6eda357be59cea8546e14c44d11eb9a1f38fbaeb53c7d2365707e89af0d02","abstract_canon_sha256":"7b75d0bee194165cf34cdfc54542c3b259f69d4050e1934a19c938d5b29d86ce"},"schema_version":"1.0"},"canonical_sha256":"883fa186578770739836fd93c5e452109d34a7a75cd322f7cf65759e827a3cba","source":{"kind":"arxiv","id":"1802.00292","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.00292","created_at":"2026-05-17T23:59:17Z"},{"alias_kind":"arxiv_version","alias_value":"1802.00292v3","created_at":"2026-05-17T23:59:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.00292","created_at":"2026-05-17T23:59:17Z"},{"alias_kind":"pith_short_12","alias_value":"RA72DBSXQ5YH","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"RA72DBSXQ5YHHGBW","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"RA72DBSX","created_at":"2026-05-18T12:32:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:RA72DBSXQ5YHHGBW7WJ4LZCSCC","target":"record","payload":{"canonical_record":{"source":{"id":"1802.00292","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-02-01T14:06:06Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"48d6eda357be59cea8546e14c44d11eb9a1f38fbaeb53c7d2365707e89af0d02","abstract_canon_sha256":"7b75d0bee194165cf34cdfc54542c3b259f69d4050e1934a19c938d5b29d86ce"},"schema_version":"1.0"},"canonical_sha256":"883fa186578770739836fd93c5e452109d34a7a75cd322f7cf65759e827a3cba","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:59:17.685925Z","signature_b64":"G1JtKOchs+Q5ztnLyBfQENR9fmFRaFPL87FRj9LHQzgCKGNP3bWuvJb+N5BJfNOFIeaGGdPLo0akMv9ILTDBCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"883fa186578770739836fd93c5e452109d34a7a75cd322f7cf65759e827a3cba","last_reissued_at":"2026-05-17T23:59:17.685308Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:59:17.685308Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1802.00292","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:59:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tMD+Uf43E1p/OcAA6soF/xSnUs1XeB7pP/cz2o5HvRonUNNLCDWeGELDSygCqKUGTOvcYSYEgRJ/iw7vMfPIBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T12:33:10.687270Z"},"content_sha256":"749a3d4c6094b9d8b700b85813d429599d4820cf56c5d8424eaba856e8b8009a","schema_version":"1.0","event_id":"sha256:749a3d4c6094b9d8b700b85813d429599d4820cf56c5d8424eaba856e8b8009a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:RA72DBSXQ5YHHGBW7WJ4LZCSCC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fast-spinning black holes inferred from symmetrically limb-brightened radio jets","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"Kazuhiro Hada, Kazuya Takahashi, Kenji Toma, Masanori Nakamura, Motoki Kino","submitted_at":"2018-02-01T14:06:06Z","abstract_excerpt":"This paper theoretically investigates the relations between the structure of relativistic jets and produced synchrotron images, by using a steady axisymmetric force-free jet model. We especially focus on the limb-brightened jets that are largely symmetric to the jet axes and observed in some active galactic nuclei such as M87, Mrk~501, Cyg~A, and 3C84. We find that symmetrically limb-brightened images can be produced when magnetic field lines of the jet penetrate a fast-spinning black hole as motivated by the Blandford-Znajek mechanism. On the other hand, jets with magnetic field lines that pa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.00292","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-17T23:59:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BZ6jFQL4kiY/nQlNTdsFkKjqM7Cpih4c+0hQK84TkwL/Q6p99lFL+Aw16R8bLg9sTRPF0AWZTb1Stb8P3zKnDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T12:33:10.687631Z"},"content_sha256":"f2f3714ce38fd06efff62f16d9f79cc12a71a9b2ce14f4cdded5e5a259b6effe","schema_version":"1.0","event_id":"sha256:f2f3714ce38fd06efff62f16d9f79cc12a71a9b2ce14f4cdded5e5a259b6effe"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RA72DBSXQ5YHHGBW7WJ4LZCSCC/bundle.json","state_url":"https://pith.science/pith/RA72DBSXQ5YHHGBW7WJ4LZCSCC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RA72DBSXQ5YHHGBW7WJ4LZCSCC/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":"2026-06-05T12:33:10Z","links":{"resolver":"https://pith.science/pith/RA72DBSXQ5YHHGBW7WJ4LZCSCC","bundle":"https://pith.science/pith/RA72DBSXQ5YHHGBW7WJ4LZCSCC/bundle.json","state":"https://pith.science/pith/RA72DBSXQ5YHHGBW7WJ4LZCSCC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RA72DBSXQ5YHHGBW7WJ4LZCSCC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:RA72DBSXQ5YHHGBW7WJ4LZCSCC","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":"7b75d0bee194165cf34cdfc54542c3b259f69d4050e1934a19c938d5b29d86ce","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-02-01T14:06:06Z","title_canon_sha256":"48d6eda357be59cea8546e14c44d11eb9a1f38fbaeb53c7d2365707e89af0d02"},"schema_version":"1.0","source":{"id":"1802.00292","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.00292","created_at":"2026-05-17T23:59:17Z"},{"alias_kind":"arxiv_version","alias_value":"1802.00292v3","created_at":"2026-05-17T23:59:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.00292","created_at":"2026-05-17T23:59:17Z"},{"alias_kind":"pith_short_12","alias_value":"RA72DBSXQ5YH","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"RA72DBSXQ5YHHGBW","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"RA72DBSX","created_at":"2026-05-18T12:32:50Z"}],"graph_snapshots":[{"event_id":"sha256:f2f3714ce38fd06efff62f16d9f79cc12a71a9b2ce14f4cdded5e5a259b6effe","target":"graph","created_at":"2026-05-17T23:59:17Z","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"},"paper":{"abstract_excerpt":"This paper theoretically investigates the relations between the structure of relativistic jets and produced synchrotron images, by using a steady axisymmetric force-free jet model. We especially focus on the limb-brightened jets that are largely symmetric to the jet axes and observed in some active galactic nuclei such as M87, Mrk~501, Cyg~A, and 3C84. We find that symmetrically limb-brightened images can be produced when magnetic field lines of the jet penetrate a fast-spinning black hole as motivated by the Blandford-Znajek mechanism. On the other hand, jets with magnetic field lines that pa","authors_text":"Kazuhiro Hada, Kazuya Takahashi, Kenji Toma, Masanori Nakamura, Motoki Kino","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-02-01T14:06:06Z","title":"Fast-spinning black holes inferred from symmetrically limb-brightened radio jets"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.00292","kind":"arxiv","version":3},"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":"sha256:749a3d4c6094b9d8b700b85813d429599d4820cf56c5d8424eaba856e8b8009a","target":"record","created_at":"2026-05-17T23:59:17Z","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":"7b75d0bee194165cf34cdfc54542c3b259f69d4050e1934a19c938d5b29d86ce","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-02-01T14:06:06Z","title_canon_sha256":"48d6eda357be59cea8546e14c44d11eb9a1f38fbaeb53c7d2365707e89af0d02"},"schema_version":"1.0","source":{"id":"1802.00292","kind":"arxiv","version":3}},"canonical_sha256":"883fa186578770739836fd93c5e452109d34a7a75cd322f7cf65759e827a3cba","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"883fa186578770739836fd93c5e452109d34a7a75cd322f7cf65759e827a3cba","first_computed_at":"2026-05-17T23:59:17.685308Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:59:17.685308Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"G1JtKOchs+Q5ztnLyBfQENR9fmFRaFPL87FRj9LHQzgCKGNP3bWuvJb+N5BJfNOFIeaGGdPLo0akMv9ILTDBCA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:59:17.685925Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.00292","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:749a3d4c6094b9d8b700b85813d429599d4820cf56c5d8424eaba856e8b8009a","sha256:f2f3714ce38fd06efff62f16d9f79cc12a71a9b2ce14f4cdded5e5a259b6effe"],"state_sha256":"ceb0f643f8cd3599578f256ed7bdec279af9122b7fe01ebe89e67424463883be"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BwfMLf7Cpyo/tTT4pbMqV4G2Z/el3ATJLeVudTlCu8eVuEqQ21hMMmAdriboNyjDK5bORH9Al8iXz8t1cGFXAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T12:33:10.689901Z","bundle_sha256":"44ba2397658fb5f4528c952ba4b65fc45d2204982f89d21a47232a227dafc350"}}