{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:CTAZWNWBELQJ6H7B4FZZHZ72CN","short_pith_number":"pith:CTAZWNWB","canonical_record":{"source":{"id":"1408.6241","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-08-26T20:05:07Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"923071d98faf5466d45d09e8c7abcab439276caa6e6b11a69564e48d7cee8a36","abstract_canon_sha256":"f10e04593289070b83d6cc453f23543cd94497982b04b821bdf85093c26d710c"},"schema_version":"1.0"},"canonical_sha256":"14c19b36c122e09f1fe1e17393e7fa1347226c8862f30fc060280b1c7ecc8f40","source":{"kind":"arxiv","id":"1408.6241","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.6241","created_at":"2026-05-18T01:42:12Z"},{"alias_kind":"arxiv_version","alias_value":"1408.6241v1","created_at":"2026-05-18T01:42:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.6241","created_at":"2026-05-18T01:42:12Z"},{"alias_kind":"pith_short_12","alias_value":"CTAZWNWBELQJ","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_16","alias_value":"CTAZWNWBELQJ6H7B","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_8","alias_value":"CTAZWNWB","created_at":"2026-05-18T12:28:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:CTAZWNWBELQJ6H7B4FZZHZ72CN","target":"record","payload":{"canonical_record":{"source":{"id":"1408.6241","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-08-26T20:05:07Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"923071d98faf5466d45d09e8c7abcab439276caa6e6b11a69564e48d7cee8a36","abstract_canon_sha256":"f10e04593289070b83d6cc453f23543cd94497982b04b821bdf85093c26d710c"},"schema_version":"1.0"},"canonical_sha256":"14c19b36c122e09f1fe1e17393e7fa1347226c8862f30fc060280b1c7ecc8f40","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:12.908460Z","signature_b64":"MXubHEz83cxxiP/QIo/bvaqnXhcfYxLgQq9RDXdemPpTJKK+zSrhMvLs0SmDdeUTeSUZMvmHUd2QrFuaCthfDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"14c19b36c122e09f1fe1e17393e7fa1347226c8862f30fc060280b1c7ecc8f40","last_reissued_at":"2026-05-18T01:42:12.907793Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:12.907793Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1408.6241","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":"2026-05-18T01:42:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q+sdYZcG9raxA+TzWA73ShtfmGiABF0HWELBIE1hdL6SE8C/kPZrl56YxeWEE0YbEFQFPXBX18QIYsp4tUKmDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T23:13:42.963228Z"},"content_sha256":"69db9b8ec2541e6e4d948f66810d887310124fdb064fcd3e03cad0239a0ae473","schema_version":"1.0","event_id":"sha256:69db9b8ec2541e6e4d948f66810d887310124fdb064fcd3e03cad0239a0ae473"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:CTAZWNWBELQJ6H7B4FZZHZ72CN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Relative Astrometry of Compact Flaring Structures in Sgr A* with Polarimetric VLBI","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.HE","authors_text":"Avery E. Broderick, Daniel P. Marrone, John F. C. Wardle, Michael D. Johnson, Sheperd S. Doeleman, Vincent L. Fish","submitted_at":"2014-08-26T20:05:07Z","abstract_excerpt":"We demonstrate that polarimetric interferometry can be used to extract precise spatial information about compact polarized flares of Sgr A*. We show that, for a faint dynamical component, a single interferometric baseline suffices to determine both its polarization and projected displacement from the quiescent intensity centroid. A second baseline enables two-dimensional reconstruction of the displacement, and additional baselines can self-calibrate using the flare, enhancing synthesis imaging of the quiescent emission. We apply this technique to simulated 1.3-mm wavelength observations of a \""},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.6241","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":"2026-05-18T01:42:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JSFrAxp0C89aAtd1BAa7fjRTQli3FR7C8Aog3KOCOU4uTF6byOv+bT5nWqTC5Lu5kl/4dLEB4iXzK1lZP4TPCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T23:13:42.963881Z"},"content_sha256":"1be787a7556bec29730737b87b48e0517ed0207f98c129c0c969483091248840","schema_version":"1.0","event_id":"sha256:1be787a7556bec29730737b87b48e0517ed0207f98c129c0c969483091248840"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CTAZWNWBELQJ6H7B4FZZHZ72CN/bundle.json","state_url":"https://pith.science/pith/CTAZWNWBELQJ6H7B4FZZHZ72CN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CTAZWNWBELQJ6H7B4FZZHZ72CN/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":"2026-06-07T23:13:42Z","links":{"resolver":"https://pith.science/pith/CTAZWNWBELQJ6H7B4FZZHZ72CN","bundle":"https://pith.science/pith/CTAZWNWBELQJ6H7B4FZZHZ72CN/bundle.json","state":"https://pith.science/pith/CTAZWNWBELQJ6H7B4FZZHZ72CN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CTAZWNWBELQJ6H7B4FZZHZ72CN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:CTAZWNWBELQJ6H7B4FZZHZ72CN","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":"f10e04593289070b83d6cc453f23543cd94497982b04b821bdf85093c26d710c","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-08-26T20:05:07Z","title_canon_sha256":"923071d98faf5466d45d09e8c7abcab439276caa6e6b11a69564e48d7cee8a36"},"schema_version":"1.0","source":{"id":"1408.6241","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.6241","created_at":"2026-05-18T01:42:12Z"},{"alias_kind":"arxiv_version","alias_value":"1408.6241v1","created_at":"2026-05-18T01:42:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.6241","created_at":"2026-05-18T01:42:12Z"},{"alias_kind":"pith_short_12","alias_value":"CTAZWNWBELQJ","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_16","alias_value":"CTAZWNWBELQJ6H7B","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_8","alias_value":"CTAZWNWB","created_at":"2026-05-18T12:28:22Z"}],"graph_snapshots":[{"event_id":"sha256:1be787a7556bec29730737b87b48e0517ed0207f98c129c0c969483091248840","target":"graph","created_at":"2026-05-18T01:42:12Z","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":"We demonstrate that polarimetric interferometry can be used to extract precise spatial information about compact polarized flares of Sgr A*. We show that, for a faint dynamical component, a single interferometric baseline suffices to determine both its polarization and projected displacement from the quiescent intensity centroid. A second baseline enables two-dimensional reconstruction of the displacement, and additional baselines can self-calibrate using the flare, enhancing synthesis imaging of the quiescent emission. We apply this technique to simulated 1.3-mm wavelength observations of a \"","authors_text":"Avery E. Broderick, Daniel P. Marrone, John F. C. Wardle, Michael D. Johnson, Sheperd S. Doeleman, Vincent L. Fish","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-08-26T20:05:07Z","title":"Relative Astrometry of Compact Flaring Structures in Sgr A* with Polarimetric VLBI"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.6241","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":"sha256:69db9b8ec2541e6e4d948f66810d887310124fdb064fcd3e03cad0239a0ae473","target":"record","created_at":"2026-05-18T01:42:12Z","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":"f10e04593289070b83d6cc453f23543cd94497982b04b821bdf85093c26d710c","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-08-26T20:05:07Z","title_canon_sha256":"923071d98faf5466d45d09e8c7abcab439276caa6e6b11a69564e48d7cee8a36"},"schema_version":"1.0","source":{"id":"1408.6241","kind":"arxiv","version":1}},"canonical_sha256":"14c19b36c122e09f1fe1e17393e7fa1347226c8862f30fc060280b1c7ecc8f40","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"14c19b36c122e09f1fe1e17393e7fa1347226c8862f30fc060280b1c7ecc8f40","first_computed_at":"2026-05-18T01:42:12.907793Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:12.907793Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MXubHEz83cxxiP/QIo/bvaqnXhcfYxLgQq9RDXdemPpTJKK+zSrhMvLs0SmDdeUTeSUZMvmHUd2QrFuaCthfDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:12.908460Z","signed_message":"canonical_sha256_bytes"},"source_id":"1408.6241","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:69db9b8ec2541e6e4d948f66810d887310124fdb064fcd3e03cad0239a0ae473","sha256:1be787a7556bec29730737b87b48e0517ed0207f98c129c0c969483091248840"],"state_sha256":"82084256ed887070ff0441a5005e48a157b4b1355bafb007671889184d7e282a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8jr3rtfRy4waKhYuQ4UedjABAQdD8uzKJU6KdvzPXu3PnMqmEq7oqPaWb1a1NzzEQ5D/Yf67+EDdKNPkl3KgDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T23:13:42.967230Z","bundle_sha256":"f2743faf651d0349fcd1d157958b5193fe6b75d7403c3d98a61774bb38884ed6"}}