{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:GTFUVJAZREEFQQ4ZKWA2IIBUA3","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":"daeb3bfa1c3923f6a33cee6d1f57a11c432ef3ec43d523427e3fb2f07c01fd0e","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-04-15T18:00:02Z","title_canon_sha256":"11dd4335288539ee2abdf74935557ac97ce800a0f42d5ed07fbc73828a373965"},"schema_version":"1.0","source":{"id":"1904.07243","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.07243","created_at":"2026-05-17T23:44:54Z"},{"alias_kind":"arxiv_version","alias_value":"1904.07243v1","created_at":"2026-05-17T23:44:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.07243","created_at":"2026-05-17T23:44:54Z"},{"alias_kind":"pith_short_12","alias_value":"GTFUVJAZREEF","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"GTFUVJAZREEFQQ4Z","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"GTFUVJAZ","created_at":"2026-05-18T12:33:18Z"}],"graph_snapshots":[{"event_id":"sha256:7a3c72c82b5e866a37ffa249eb0afdef8d5b7b28beacf440decb3ee07f96d64b","target":"graph","created_at":"2026-05-17T23:44:54Z","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":"Recent radio VLBI observations of the relativistic jet in M87 radio galaxy have shown a triple-ridge structure that consists of the conventional limb-brightened feature and a central narrow ridge. Motivated by these observations, we examine a steady axisymmetric force-free model of a jet driven by the central black hole (BH) with its electromagnetic structure being consistent with general relativistic magnetohydrodynamic simulations, and find that it can produce triple-ridge images even if we assume a simple Gaussian distribution of emitting electrons at the base of the jet. We show that the f","authors_text":"Kazuya Takahashi, Kenji Toma, Taiki Ogihara","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-04-15T18:00:02Z","title":"A Mechanism for Triple-Ridge Emission Structure of AGN Jets"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.07243","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":"sha256:7ad7ea77ca08742edc56bd2b0d43a79c5ce5edf4a54f2953e9640e1c1135bd67","target":"record","created_at":"2026-05-17T23:44:54Z","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":"daeb3bfa1c3923f6a33cee6d1f57a11c432ef3ec43d523427e3fb2f07c01fd0e","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-04-15T18:00:02Z","title_canon_sha256":"11dd4335288539ee2abdf74935557ac97ce800a0f42d5ed07fbc73828a373965"},"schema_version":"1.0","source":{"id":"1904.07243","kind":"arxiv","version":1}},"canonical_sha256":"34cb4aa41989085843995581a4203406ed06a1da710751f19c53a0986cd6eda0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"34cb4aa41989085843995581a4203406ed06a1da710751f19c53a0986cd6eda0","first_computed_at":"2026-05-17T23:44:54.333269Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:44:54.333269Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uGYlHGqj2W/Z5CD/gwEBbakzqyZnr0fpkk03h8FvG+I2XmOw47t1GadwjjzRImmKcvAYLhaqTOp/Io4Aa9qwDQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:44:54.333935Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.07243","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7ad7ea77ca08742edc56bd2b0d43a79c5ce5edf4a54f2953e9640e1c1135bd67","sha256:7a3c72c82b5e866a37ffa249eb0afdef8d5b7b28beacf440decb3ee07f96d64b"],"state_sha256":"8794a41cce4fd657cc25f6c1fc54aa4d5f53eeb37177c34e4062ae71faf6f3b1"}