{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:HJ6P73INRRQFO4CPPJ4KS7MSEV","short_pith_number":"pith:HJ6P73IN","canonical_record":{"source":{"id":"1601.05550","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-01-21T08:47:13Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"d9899eac1a4327d12b92e83c6e3957b1c4f91748571a0a705ffa4532865e10bb","abstract_canon_sha256":"0a5ed9a12750090ce5bdc383b795bb84188afbe828e49cc6f9538c79555ab4b7"},"schema_version":"1.0"},"canonical_sha256":"3a7cffed0d8c6057704f7a78a97d9225739653fe2f87923866dc6be466c1142c","source":{"kind":"arxiv","id":"1601.05550","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.05550","created_at":"2026-05-18T00:48:20Z"},{"alias_kind":"arxiv_version","alias_value":"1601.05550v1","created_at":"2026-05-18T00:48:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.05550","created_at":"2026-05-18T00:48:20Z"},{"alias_kind":"pith_short_12","alias_value":"HJ6P73INRRQF","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"HJ6P73INRRQFO4CP","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"HJ6P73IN","created_at":"2026-05-18T12:30:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:HJ6P73INRRQFO4CPPJ4KS7MSEV","target":"record","payload":{"canonical_record":{"source":{"id":"1601.05550","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-01-21T08:47:13Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"d9899eac1a4327d12b92e83c6e3957b1c4f91748571a0a705ffa4532865e10bb","abstract_canon_sha256":"0a5ed9a12750090ce5bdc383b795bb84188afbe828e49cc6f9538c79555ab4b7"},"schema_version":"1.0"},"canonical_sha256":"3a7cffed0d8c6057704f7a78a97d9225739653fe2f87923866dc6be466c1142c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:48:20.266201Z","signature_b64":"bzNl1C3nDBlvodQt8KOHPFr4OGlsuq9ytxGmDXSE4OXeSIJo9zyOriuxN+okPpr9DgKs2APJr9bWvNgb54VBDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3a7cffed0d8c6057704f7a78a97d9225739653fe2f87923866dc6be466c1142c","last_reissued_at":"2026-05-18T00:48:20.265522Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:48:20.265522Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1601.05550","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":"2026-05-18T00:48:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OFDVIerbjHf8ugaZj3KaukzlU1qFRGu50cSDJ0gBrFIHxM96h51mVrz+YAQmnGCMLd+mFs9RAAlJJr+AXN65AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T21:04:54.441783Z"},"content_sha256":"784e282d424fe7ce0f5183e95d58b1de9074b556fe72617247dfacd18e4c05ab","schema_version":"1.0","event_id":"sha256:784e282d424fe7ce0f5183e95d58b1de9074b556fe72617247dfacd18e4c05ab"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:HJ6P73INRRQFO4CPPJ4KS7MSEV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Probing the magnetic field structure in Sgr A* on Black Hole Horizon Scales with Polarized Radiative Transfer Simulations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"(2) Harvard-Smithsonian Center for Astrophysics, 3) ((1) Department of Physics & Joint Space-Science Institute, (3) Massachusetts Institute of Technology, Haystack Observatory), Jonathan C. McKinney (1), Michael D. Johnson (2), Roman Gold (1), Sheperd S. Doeleman (2, University of Maryland","submitted_at":"2016-01-21T08:47:13Z","abstract_excerpt":"Magnetic fields are believed to drive accretion and relativistic jets in black hole accretion systems, but the magnetic-field structure that controls these phenomena remains uncertain. We perform general relativistic (GR) polarized radiative transfer of time-dependent three-dimensional GR magnetohydrodynamical (MHD) simulations to model thermal synchrotron emission from the Galactic Center source Sagittarius A$^\\ast$ (Sgr A*). We compare our results to new polarimetry measurements by the Event Horizon Telescope (EHT) and show how polarization in the visibility (Fourier) domain distinguishes an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.05550","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":""},"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":"2026-05-18T00:48:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4bPHO3Mq/RGJuTPW88u/jU8VbfUwG4BBSacCaRjFsIbL1n45LBryPLX55+6le99Isn8GQPvWxPJRMr6z2eKTCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T21:04:54.442721Z"},"content_sha256":"c7f2907c4cdc4ce009bc05489f2c6795cbd2ebd19030bc9cb87a42f4fe565065","schema_version":"1.0","event_id":"sha256:c7f2907c4cdc4ce009bc05489f2c6795cbd2ebd19030bc9cb87a42f4fe565065"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HJ6P73INRRQFO4CPPJ4KS7MSEV/bundle.json","state_url":"https://pith.science/pith/HJ6P73INRRQFO4CPPJ4KS7MSEV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HJ6P73INRRQFO4CPPJ4KS7MSEV/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":"2026-08-12T21:04:54Z","links":{"resolver":"https://pith.science/pith/HJ6P73INRRQFO4CPPJ4KS7MSEV","bundle":"https://pith.science/pith/HJ6P73INRRQFO4CPPJ4KS7MSEV/bundle.json","state":"https://pith.science/pith/HJ6P73INRRQFO4CPPJ4KS7MSEV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HJ6P73INRRQFO4CPPJ4KS7MSEV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:HJ6P73INRRQFO4CPPJ4KS7MSEV","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":"0a5ed9a12750090ce5bdc383b795bb84188afbe828e49cc6f9538c79555ab4b7","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-01-21T08:47:13Z","title_canon_sha256":"d9899eac1a4327d12b92e83c6e3957b1c4f91748571a0a705ffa4532865e10bb"},"schema_version":"1.0","source":{"id":"1601.05550","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.05550","created_at":"2026-05-18T00:48:20Z"},{"alias_kind":"arxiv_version","alias_value":"1601.05550v1","created_at":"2026-05-18T00:48:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.05550","created_at":"2026-05-18T00:48:20Z"},{"alias_kind":"pith_short_12","alias_value":"HJ6P73INRRQF","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"HJ6P73INRRQFO4CP","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"HJ6P73IN","created_at":"2026-05-18T12:30:19Z"}],"graph_snapshots":[{"event_id":"sha256:c7f2907c4cdc4ce009bc05489f2c6795cbd2ebd19030bc9cb87a42f4fe565065","target":"graph","created_at":"2026-05-18T00:48:20Z","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":"Magnetic fields are believed to drive accretion and relativistic jets in black hole accretion systems, but the magnetic-field structure that controls these phenomena remains uncertain. We perform general relativistic (GR) polarized radiative transfer of time-dependent three-dimensional GR magnetohydrodynamical (MHD) simulations to model thermal synchrotron emission from the Galactic Center source Sagittarius A$^\\ast$ (Sgr A*). We compare our results to new polarimetry measurements by the Event Horizon Telescope (EHT) and show how polarization in the visibility (Fourier) domain distinguishes an","authors_text":"(2) Harvard-Smithsonian Center for Astrophysics, 3) ((1) Department of Physics & Joint Space-Science Institute, (3) Massachusetts Institute of Technology, Haystack Observatory), Jonathan C. McKinney (1), Michael D. Johnson (2), Roman Gold (1), Sheperd S. Doeleman (2, University of Maryland","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-01-21T08:47:13Z","title":"Probing the magnetic field structure in Sgr A* on Black Hole Horizon Scales with Polarized Radiative Transfer Simulations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.05550","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":"sha256:784e282d424fe7ce0f5183e95d58b1de9074b556fe72617247dfacd18e4c05ab","target":"record","created_at":"2026-05-18T00:48:20Z","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":"0a5ed9a12750090ce5bdc383b795bb84188afbe828e49cc6f9538c79555ab4b7","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-01-21T08:47:13Z","title_canon_sha256":"d9899eac1a4327d12b92e83c6e3957b1c4f91748571a0a705ffa4532865e10bb"},"schema_version":"1.0","source":{"id":"1601.05550","kind":"arxiv","version":1}},"canonical_sha256":"3a7cffed0d8c6057704f7a78a97d9225739653fe2f87923866dc6be466c1142c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3a7cffed0d8c6057704f7a78a97d9225739653fe2f87923866dc6be466c1142c","first_computed_at":"2026-05-18T00:48:20.265522Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:48:20.265522Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bzNl1C3nDBlvodQt8KOHPFr4OGlsuq9ytxGmDXSE4OXeSIJo9zyOriuxN+okPpr9DgKs2APJr9bWvNgb54VBDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:48:20.266201Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.05550","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:784e282d424fe7ce0f5183e95d58b1de9074b556fe72617247dfacd18e4c05ab","sha256:c7f2907c4cdc4ce009bc05489f2c6795cbd2ebd19030bc9cb87a42f4fe565065"],"state_sha256":"6a08fb4ed24edb113c3620cc2f03f6523f991937a7b1fd0147f0b1417e7dd9b8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a4cyEICQP5lCkTk4mgu9LY+DVkLd5DZ/x+q0RXrhKeigH8MDyaBHDGCNM40UIksBpm3DhsDtPlisyZG/1tidDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T21:04:54.449368Z","bundle_sha256":"74b91f84d51126d0494da0da3d87ca190bc313b074edf089f5d862f8788e9481"}}