{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:DDG3UYKFCGUOMZCOMZZ5OQ2SSJ","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":"74b21e0eba95d341de75971c6132aab22fedfa01dde76e346b690a2c930fb2a8","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-10-03T05:13:59Z","title_canon_sha256":"6cdd48cdcae25f99545f4cdd307595bdbd496cbae9d66117d22e7eef0bec9893"},"schema_version":"1.0","source":{"id":"1110.0267","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.0267","created_at":"2026-05-18T04:04:53Z"},{"alias_kind":"arxiv_version","alias_value":"1110.0267v1","created_at":"2026-05-18T04:04:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.0267","created_at":"2026-05-18T04:04:53Z"},{"alias_kind":"pith_short_12","alias_value":"DDG3UYKFCGUO","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_16","alias_value":"DDG3UYKFCGUOMZCO","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_8","alias_value":"DDG3UYKF","created_at":"2026-05-18T12:26:26Z"}],"graph_snapshots":[{"event_id":"sha256:90d1b4b967adb6a60cc21e55b9c71a92e205f92c8c1f91fec800e01ff9d2e725","target":"graph","created_at":"2026-05-18T04:04:53Z","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":"Space Very-Long-Baseline-Interferometry (S-VLBI) observations at high frequencies hold the prospect of achieving the highest angular resolutions and astrometric accuracies, resulting from the long baselines between ground and satellite telescopes. Nevertheless, space-specific issues, such as limited accuracy in the satellite orbit reconstruction and constraints on the satellite antenna pointing operations, limit the application of conventional phase referencing. We investigate the feasibility of an alternative technique, source frequency phase referencing (SFPR), to the S-VLBI domain. With the","authors_text":"J. Malarecki, M. Rioja, R. Dodson, Y. Asaki","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-10-03T05:13:59Z","title":"Exploration of SFPR techniques for astrometry and observations of weak sources with high frequency Space VLBI"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.0267","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":"sha256:7400db863c302e0ceca6f7ccd465916360a17edf38bfce8aaa49f5d61cd9a698","target":"record","created_at":"2026-05-18T04:04:53Z","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":"74b21e0eba95d341de75971c6132aab22fedfa01dde76e346b690a2c930fb2a8","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-10-03T05:13:59Z","title_canon_sha256":"6cdd48cdcae25f99545f4cdd307595bdbd496cbae9d66117d22e7eef0bec9893"},"schema_version":"1.0","source":{"id":"1110.0267","kind":"arxiv","version":1}},"canonical_sha256":"18cdba614511a8e6644e6673d743529241c44af33f849a0580a7b93cfa392225","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"18cdba614511a8e6644e6673d743529241c44af33f849a0580a7b93cfa392225","first_computed_at":"2026-05-18T04:04:53.181874Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:04:53.181874Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YoXwVKcI9JwZA9Td8Sou3iFSOSst3eXSBytIIm2IL+aX8bzbD3cZJOb1e1WaaYikT4nl2yRxHXV2VaN2UFKJAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:04:53.182491Z","signed_message":"canonical_sha256_bytes"},"source_id":"1110.0267","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7400db863c302e0ceca6f7ccd465916360a17edf38bfce8aaa49f5d61cd9a698","sha256:90d1b4b967adb6a60cc21e55b9c71a92e205f92c8c1f91fec800e01ff9d2e725"],"state_sha256":"0e5a6001204e2d67810371f9af5c8b9db4bbadd6d045696c16bdbfd709e64238"}